system-node.cjs

module.exports =
/******/ (function(modules, runtime) { // webpackBootstrap
/******/ 	"use strict";
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/******/ 	var installedModules = {};
/******/
/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {
/******/
/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId]) {
/******/ 			return installedModules[moduleId].exports;
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/******/ 		var module = installedModules[moduleId] = {
/******/ 			i: moduleId,
/******/ 			l: false,
/******/ 			exports: {}
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/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
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/******/ 		module.l = true;
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/******/ 	__webpack_require__.ab = __dirname + "/";
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/******/ 	// the startup function
/******/ 	function startup() {
/******/ 		// Load entry module and return exports
/******/ 		return __webpack_require__(554);
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/******/ 	// initialize runtime
/******/ 	runtime(__webpack_require__);
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/******/ 	// run startup
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/************************************************************************/
/******/ ({

/***/ 1:
/***/ (function(__unusedmodule, exports) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

// It turns out that some (most?) JavaScript engines don't self-host
// `Array.prototype.sort`. This makes sense because C++ will likely remain
// faster than JS when doing raw CPU-intensive sorting. However, when using a
// custom comparator function, calling back and forth between the VM's C++ and
// JIT'd JS is rather slow *and* loses JIT type information, resulting in
// worse generated code for the comparator function than would be optimal. In
// fact, when sorting with a comparator, these costs outweigh the benefits of
// sorting in C++. By using our own JS-implemented Quick Sort (below), we get
// a ~3500ms mean speed-up in `bench/bench.html`.

/**
 * Swap the elements indexed by `x` and `y` in the array `ary`.
 *
 * @param {Array} ary
 *        The array.
 * @param {Number} x
 *        The index of the first item.
 * @param {Number} y
 *        The index of the second item.
 */
function swap(ary, x, y) {
  var temp = ary[x];
  ary[x] = ary[y];
  ary[y] = temp;
}

/**
 * Returns a random integer within the range `low .. high` inclusive.
 *
 * @param {Number} low
 *        The lower bound on the range.
 * @param {Number} high
 *        The upper bound on the range.
 */
function randomIntInRange(low, high) {
  return Math.round(low + (Math.random() * (high - low)));
}

/**
 * The Quick Sort algorithm.
 *
 * @param {Array} ary
 *        An array to sort.
 * @param {function} comparator
 *        Function to use to compare two items.
 * @param {Number} p
 *        Start index of the array
 * @param {Number} r
 *        End index of the array
 */
function doQuickSort(ary, comparator, p, r) {
  // If our lower bound is less than our upper bound, we (1) partition the
  // array into two pieces and (2) recurse on each half. If it is not, this is
  // the empty array and our base case.

  if (p < r) {
    // (1) Partitioning.
    //
    // The partitioning chooses a pivot between `p` and `r` and moves all
    // elements that are less than or equal to the pivot to the before it, and
    // all the elements that are greater than it after it. The effect is that
    // once partition is done, the pivot is in the exact place it will be when
    // the array is put in sorted order, and it will not need to be moved
    // again. This runs in O(n) time.

    // Always choose a random pivot so that an input array which is reverse
    // sorted does not cause O(n^2) running time.
    var pivotIndex = randomIntInRange(p, r);
    var i = p - 1;

    swap(ary, pivotIndex, r);
    var pivot = ary[r];

    // Immediately after `j` is incremented in this loop, the following hold
    // true:
    //
    //   * Every element in `ary[p .. i]` is less than or equal to the pivot.
    //
    //   * Every element in `ary[i+1 .. j-1]` is greater than the pivot.
    for (var j = p; j < r; j++) {
      if (comparator(ary[j], pivot) <= 0) {
        i += 1;
        swap(ary, i, j);
      }
    }

    swap(ary, i + 1, j);
    var q = i + 1;

    // (2) Recurse on each half.

    doQuickSort(ary, comparator, p, q - 1);
    doQuickSort(ary, comparator, q + 1, r);
  }
}

/**
 * Sort the given array in-place with the given comparator function.
 *
 * @param {Array} ary
 *        An array to sort.
 * @param {function} comparator
 *        Function to use to compare two items.
 */
exports.quickSort = function (ary, comparator) {
  doQuickSort(ary, comparator, 0, ary.length - 1);
};


/***/ }),

/***/ 18:
/***/ (function(module) {

module.exports = eval("require")("encoding");


/***/ }),

/***/ 54:
/***/ (function(__unusedmodule, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var SourceMapGenerator = __webpack_require__(454).SourceMapGenerator;
var util = __webpack_require__(338);

// Matches a Windows-style `\r\n` newline or a `\n` newline used by all other
// operating systems these days (capturing the result).
var REGEX_NEWLINE = /(\r?\n)/;

// Newline character code for charCodeAt() comparisons
var NEWLINE_CODE = 10;

// Private symbol for identifying `SourceNode`s when multiple versions of
// the source-map library are loaded. This MUST NOT CHANGE across
// versions!
var isSourceNode = "$$$isSourceNode$$$";

/**
 * SourceNodes provide a way to abstract over interpolating/concatenating
 * snippets of generated JavaScript source code while maintaining the line and
 * column information associated with the original source code.
 *
 * @param aLine The original line number.
 * @param aColumn The original column number.
 * @param aSource The original source's filename.
 * @param aChunks Optional. An array of strings which are snippets of
 *        generated JS, or other SourceNodes.
 * @param aName The original identifier.
 */
function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
  this.children = [];
  this.sourceContents = {};
  this.line = aLine == null ? null : aLine;
  this.column = aColumn == null ? null : aColumn;
  this.source = aSource == null ? null : aSource;
  this.name = aName == null ? null : aName;
  this[isSourceNode] = true;
  if (aChunks != null) this.add(aChunks);
}

/**
 * Creates a SourceNode from generated code and a SourceMapConsumer.
 *
 * @param aGeneratedCode The generated code
 * @param aSourceMapConsumer The SourceMap for the generated code
 * @param aRelativePath Optional. The path that relative sources in the
 *        SourceMapConsumer should be relative to.
 */
SourceNode.fromStringWithSourceMap =
  function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
    // The SourceNode we want to fill with the generated code
    // and the SourceMap
    var node = new SourceNode();

    // All even indices of this array are one line of the generated code,
    // while all odd indices are the newlines between two adjacent lines
    // (since `REGEX_NEWLINE` captures its match).
    // Processed fragments are accessed by calling `shiftNextLine`.
    var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
    var remainingLinesIndex = 0;
    var shiftNextLine = function() {
      var lineContents = getNextLine();
      // The last line of a file might not have a newline.
      var newLine = getNextLine() || "";
      return lineContents + newLine;

      function getNextLine() {
        return remainingLinesIndex < remainingLines.length ?
            remainingLines[remainingLinesIndex++] : undefined;
      }
    };

    // We need to remember the position of "remainingLines"
    var lastGeneratedLine = 1, lastGeneratedColumn = 0;

    // The generate SourceNodes we need a code range.
    // To extract it current and last mapping is used.
    // Here we store the last mapping.
    var lastMapping = null;

    aSourceMapConsumer.eachMapping(function (mapping) {
      if (lastMapping !== null) {
        // We add the code from "lastMapping" to "mapping":
        // First check if there is a new line in between.
        if (lastGeneratedLine < mapping.generatedLine) {
          // Associate first line with "lastMapping"
          addMappingWithCode(lastMapping, shiftNextLine());
          lastGeneratedLine++;
          lastGeneratedColumn = 0;
          // The remaining code is added without mapping
        } else {
          // There is no new line in between.
          // Associate the code between "lastGeneratedColumn" and
          // "mapping.generatedColumn" with "lastMapping"
          var nextLine = remainingLines[remainingLinesIndex] || '';
          var code = nextLine.substr(0, mapping.generatedColumn -
                                        lastGeneratedColumn);
          remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn -
                                              lastGeneratedColumn);
          lastGeneratedColumn = mapping.generatedColumn;
          addMappingWithCode(lastMapping, code);
          // No more remaining code, continue
          lastMapping = mapping;
          return;
        }
      }
      // We add the generated code until the first mapping
      // to the SourceNode without any mapping.
      // Each line is added as separate string.
      while (lastGeneratedLine < mapping.generatedLine) {
        node.add(shiftNextLine());
        lastGeneratedLine++;
      }
      if (lastGeneratedColumn < mapping.generatedColumn) {
        var nextLine = remainingLines[remainingLinesIndex] || '';
        node.add(nextLine.substr(0, mapping.generatedColumn));
        remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn);
        lastGeneratedColumn = mapping.generatedColumn;
      }
      lastMapping = mapping;
    }, this);
    // We have processed all mappings.
    if (remainingLinesIndex < remainingLines.length) {
      if (lastMapping) {
        // Associate the remaining code in the current line with "lastMapping"
        addMappingWithCode(lastMapping, shiftNextLine());
      }
      // and add the remaining lines without any mapping
      node.add(remainingLines.splice(remainingLinesIndex).join(""));
    }

    // Copy sourcesContent into SourceNode
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        if (aRelativePath != null) {
          sourceFile = util.join(aRelativePath, sourceFile);
        }
        node.setSourceContent(sourceFile, content);
      }
    });

    return node;

    function addMappingWithCode(mapping, code) {
      if (mapping === null || mapping.source === undefined) {
        node.add(code);
      } else {
        var source = aRelativePath
          ? util.join(aRelativePath, mapping.source)
          : mapping.source;
        node.add(new SourceNode(mapping.originalLine,
                                mapping.originalColumn,
                                source,
                                code,
                                mapping.name));
      }
    }
  };

/**
 * Add a chunk of generated JS to this source node.
 *
 * @param aChunk A string snippet of generated JS code, another instance of
 *        SourceNode, or an array where each member is one of those things.
 */
SourceNode.prototype.add = function SourceNode_add(aChunk) {
  if (Array.isArray(aChunk)) {
    aChunk.forEach(function (chunk) {
      this.add(chunk);
    }, this);
  }
  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
    if (aChunk) {
      this.children.push(aChunk);
    }
  }
  else {
    throw new TypeError(
      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
    );
  }
  return this;
};

/**
 * Add a chunk of generated JS to the beginning of this source node.
 *
 * @param aChunk A string snippet of generated JS code, another instance of
 *        SourceNode, or an array where each member is one of those things.
 */
SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
  if (Array.isArray(aChunk)) {
    for (var i = aChunk.length-1; i >= 0; i--) {
      this.prepend(aChunk[i]);
    }
  }
  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
    this.children.unshift(aChunk);
  }
  else {
    throw new TypeError(
      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
    );
  }
  return this;
};

/**
 * Walk over the tree of JS snippets in this node and its children. The
 * walking function is called once for each snippet of JS and is passed that
 * snippet and the its original associated source's line/column location.
 *
 * @param aFn The traversal function.
 */
SourceNode.prototype.walk = function SourceNode_walk(aFn) {
  var chunk;
  for (var i = 0, len = this.children.length; i < len; i++) {
    chunk = this.children[i];
    if (chunk[isSourceNode]) {
      chunk.walk(aFn);
    }
    else {
      if (chunk !== '') {
        aFn(chunk, { source: this.source,
                     line: this.line,
                     column: this.column,
                     name: this.name });
      }
    }
  }
};

/**
 * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
 * each of `this.children`.
 *
 * @param aSep The separator.
 */
SourceNode.prototype.join = function SourceNode_join(aSep) {
  var newChildren;
  var i;
  var len = this.children.length;
  if (len > 0) {
    newChildren = [];
    for (i = 0; i < len-1; i++) {
      newChildren.push(this.children[i]);
      newChildren.push(aSep);
    }
    newChildren.push(this.children[i]);
    this.children = newChildren;
  }
  return this;
};

/**
 * Call String.prototype.replace on the very right-most source snippet. Useful
 * for trimming whitespace from the end of a source node, etc.
 *
 * @param aPattern The pattern to replace.
 * @param aReplacement The thing to replace the pattern with.
 */
SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
  var lastChild = this.children[this.children.length - 1];
  if (lastChild[isSourceNode]) {
    lastChild.replaceRight(aPattern, aReplacement);
  }
  else if (typeof lastChild === 'string') {
    this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
  }
  else {
    this.children.push(''.replace(aPattern, aReplacement));
  }
  return this;
};

/**
 * Set the source content for a source file. This will be added to the SourceMapGenerator
 * in the sourcesContent field.
 *
 * @param aSourceFile The filename of the source file
 * @param aSourceContent The content of the source file
 */
SourceNode.prototype.setSourceContent =
  function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
    this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
  };

/**
 * Walk over the tree of SourceNodes. The walking function is called for each
 * source file content and is passed the filename and source content.
 *
 * @param aFn The traversal function.
 */
SourceNode.prototype.walkSourceContents =
  function SourceNode_walkSourceContents(aFn) {
    for (var i = 0, len = this.children.length; i < len; i++) {
      if (this.children[i][isSourceNode]) {
        this.children[i].walkSourceContents(aFn);
      }
    }

    var sources = Object.keys(this.sourceContents);
    for (var i = 0, len = sources.length; i < len; i++) {
      aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
    }
  };

/**
 * Return the string representation of this source node. Walks over the tree
 * and concatenates all the various snippets together to one string.
 */
SourceNode.prototype.toString = function SourceNode_toString() {
  var str = "";
  this.walk(function (chunk) {
    str += chunk;
  });
  return str;
};

/**
 * Returns the string representation of this source node along with a source
 * map.
 */
SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
  var generated = {
    code: "",
    line: 1,
    column: 0
  };
  var map = new SourceMapGenerator(aArgs);
  var sourceMappingActive = false;
  var lastOriginalSource = null;
  var lastOriginalLine = null;
  var lastOriginalColumn = null;
  var lastOriginalName = null;
  this.walk(function (chunk, original) {
    generated.code += chunk;
    if (original.source !== null
        && original.line !== null
        && original.column !== null) {
      if(lastOriginalSource !== original.source
         || lastOriginalLine !== original.line
         || lastOriginalColumn !== original.column
         || lastOriginalName !== original.name) {
        map.addMapping({
          source: original.source,
          original: {
            line: original.line,
            column: original.column
          },
          generated: {
            line: generated.line,
            column: generated.column
          },
          name: original.name
        });
      }
      lastOriginalSource = original.source;
      lastOriginalLine = original.line;
      lastOriginalColumn = original.column;
      lastOriginalName = original.name;
      sourceMappingActive = true;
    } else if (sourceMappingActive) {
      map.addMapping({
        generated: {
          line: generated.line,
          column: generated.column
        }
      });
      lastOriginalSource = null;
      sourceMappingActive = false;
    }
    for (var idx = 0, length = chunk.length; idx < length; idx++) {
      if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
        generated.line++;
        generated.column = 0;
        // Mappings end at eol
        if (idx + 1 === length) {
          lastOriginalSource = null;
          sourceMappingActive = false;
        } else if (sourceMappingActive) {
          map.addMapping({
            source: original.source,
            original: {
              line: original.line,
              column: original.column
            },
            generated: {
              line: generated.line,
              column: generated.column
            },
            name: original.name
          });
        }
      } else {
        generated.column++;
      }
    }
  });
  this.walkSourceContents(function (sourceFile, sourceContent) {
    map.setSourceContent(sourceFile, sourceContent);
  });

  return { code: generated.code, map: map };
};

exports.SourceNode = SourceNode;


/***/ }),

/***/ 94:
/***/ (function(__unusedmodule, exports, __webpack_require__) {

/*
 * Copyright 2009-2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE.txt or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
exports.SourceMapGenerator = __webpack_require__(454).SourceMapGenerator;
exports.SourceMapConsumer = __webpack_require__(276).SourceMapConsumer;
exports.SourceNode = __webpack_require__(54).SourceNode;


/***/ }),

/***/ 211:
/***/ (function(module) {

module.exports = require("https");

/***/ }),

/***/ 276:
/***/ (function(__unusedmodule, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = __webpack_require__(338);
var binarySearch = __webpack_require__(972);
var ArraySet = __webpack_require__(969).ArraySet;
var base64VLQ = __webpack_require__(277);
var quickSort = __webpack_require__(1).quickSort;

function SourceMapConsumer(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  return sourceMap.sections != null
    ? new IndexedSourceMapConsumer(sourceMap, aSourceMapURL)
    : new BasicSourceMapConsumer(sourceMap, aSourceMapURL);
}

SourceMapConsumer.fromSourceMap = function(aSourceMap, aSourceMapURL) {
  return BasicSourceMapConsumer.fromSourceMap(aSourceMap, aSourceMapURL);
}

/**
 * The version of the source mapping spec that we are consuming.
 */
SourceMapConsumer.prototype._version = 3;

// `__generatedMappings` and `__originalMappings` are arrays that hold the
// parsed mapping coordinates from the source map's "mappings" attribute. They
// are lazily instantiated, accessed via the `_generatedMappings` and
// `_originalMappings` getters respectively, and we only parse the mappings
// and create these arrays once queried for a source location. We jump through
// these hoops because there can be many thousands of mappings, and parsing
// them is expensive, so we only want to do it if we must.
//
// Each object in the arrays is of the form:
//
//     {
//       generatedLine: The line number in the generated code,
//       generatedColumn: The column number in the generated code,
//       source: The path to the original source file that generated this
//               chunk of code,
//       originalLine: The line number in the original source that
//                     corresponds to this chunk of generated code,
//       originalColumn: The column number in the original source that
//                       corresponds to this chunk of generated code,
//       name: The name of the original symbol which generated this chunk of
//             code.
//     }
//
// All properties except for `generatedLine` and `generatedColumn` can be
// `null`.
//
// `_generatedMappings` is ordered by the generated positions.
//
// `_originalMappings` is ordered by the original positions.

SourceMapConsumer.prototype.__generatedMappings = null;
Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
  configurable: true,
  enumerable: true,
  get: function () {
    if (!this.__generatedMappings) {
      this._parseMappings(this._mappings, this.sourceRoot);
    }

    return this.__generatedMappings;
  }
});

SourceMapConsumer.prototype.__originalMappings = null;
Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
  configurable: true,
  enumerable: true,
  get: function () {
    if (!this.__originalMappings) {
      this._parseMappings(this._mappings, this.sourceRoot);
    }

    return this.__originalMappings;
  }
});

SourceMapConsumer.prototype._charIsMappingSeparator =
  function SourceMapConsumer_charIsMappingSeparator(aStr, index) {
    var c = aStr.charAt(index);
    return c === ";" || c === ",";
  };

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
SourceMapConsumer.prototype._parseMappings =
  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    throw new Error("Subclasses must implement _parseMappings");
  };

SourceMapConsumer.GENERATED_ORDER = 1;
SourceMapConsumer.ORIGINAL_ORDER = 2;

SourceMapConsumer.GREATEST_LOWER_BOUND = 1;
SourceMapConsumer.LEAST_UPPER_BOUND = 2;

/**
 * Iterate over each mapping between an original source/line/column and a
 * generated line/column in this source map.
 *
 * @param Function aCallback
 *        The function that is called with each mapping.
 * @param Object aContext
 *        Optional. If specified, this object will be the value of `this` every
 *        time that `aCallback` is called.
 * @param aOrder
 *        Either `SourceMapConsumer.GENERATED_ORDER` or
 *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
 *        iterate over the mappings sorted by the generated file's line/column
 *        order or the original's source/line/column order, respectively. Defaults to
 *        `SourceMapConsumer.GENERATED_ORDER`.
 */
SourceMapConsumer.prototype.eachMapping =
  function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
    var context = aContext || null;
    var order = aOrder || SourceMapConsumer.GENERATED_ORDER;

    var mappings;
    switch (order) {
    case SourceMapConsumer.GENERATED_ORDER:
      mappings = this._generatedMappings;
      break;
    case SourceMapConsumer.ORIGINAL_ORDER:
      mappings = this._originalMappings;
      break;
    default:
      throw new Error("Unknown order of iteration.");
    }

    var sourceRoot = this.sourceRoot;
    mappings.map(function (mapping) {
      var source = mapping.source === null ? null : this._sources.at(mapping.source);
      source = util.computeSourceURL(sourceRoot, source, this._sourceMapURL);
      return {
        source: source,
        generatedLine: mapping.generatedLine,
        generatedColumn: mapping.generatedColumn,
        originalLine: mapping.originalLine,
        originalColumn: mapping.originalColumn,
        name: mapping.name === null ? null : this._names.at(mapping.name)
      };
    }, this).forEach(aCallback, context);
  };

/**
 * Returns all generated line and column information for the original source,
 * line, and column provided. If no column is provided, returns all mappings
 * corresponding to a either the line we are searching for or the next
 * closest line that has any mappings. Otherwise, returns all mappings
 * corresponding to the given line and either the column we are searching for
 * or the next closest column that has any offsets.
 *
 * The only argument is an object with the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number is 1-based.
 *   - column: Optional. the column number in the original source.
 *    The column number is 0-based.
 *
 * and an array of objects is returned, each with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *    line number is 1-based.
 *   - column: The column number in the generated source, or null.
 *    The column number is 0-based.
 */
SourceMapConsumer.prototype.allGeneratedPositionsFor =
  function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
    var line = util.getArg(aArgs, 'line');

    // When there is no exact match, BasicSourceMapConsumer.prototype._findMapping
    // returns the index of the closest mapping less than the needle. By
    // setting needle.originalColumn to 0, we thus find the last mapping for
    // the given line, provided such a mapping exists.
    var needle = {
      source: util.getArg(aArgs, 'source'),
      originalLine: line,
      originalColumn: util.getArg(aArgs, 'column', 0)
    };

    needle.source = this._findSourceIndex(needle.source);
    if (needle.source < 0) {
      return [];
    }

    var mappings = [];

    var index = this._findMapping(needle,
                                  this._originalMappings,
                                  "originalLine",
                                  "originalColumn",
                                  util.compareByOriginalPositions,
                                  binarySearch.LEAST_UPPER_BOUND);
    if (index >= 0) {
      var mapping = this._originalMappings[index];

      if (aArgs.column === undefined) {
        var originalLine = mapping.originalLine;

        // Iterate until either we run out of mappings, or we run into
        // a mapping for a different line than the one we found. Since
        // mappings are sorted, this is guaranteed to find all mappings for
        // the line we found.
        while (mapping && mapping.originalLine === originalLine) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[++index];
        }
      } else {
        var originalColumn = mapping.originalColumn;

        // Iterate until either we run out of mappings, or we run into
        // a mapping for a different line than the one we were searching for.
        // Since mappings are sorted, this is guaranteed to find all mappings for
        // the line we are searching for.
        while (mapping &&
               mapping.originalLine === line &&
               mapping.originalColumn == originalColumn) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[++index];
        }
      }
    }

    return mappings;
  };

exports.SourceMapConsumer = SourceMapConsumer;

/**
 * A BasicSourceMapConsumer instance represents a parsed source map which we can
 * query for information about the original file positions by giving it a file
 * position in the generated source.
 *
 * The first parameter is the raw source map (either as a JSON string, or
 * already parsed to an object). According to the spec, source maps have the
 * following attributes:
 *
 *   - version: Which version of the source map spec this map is following.
 *   - sources: An array of URLs to the original source files.
 *   - names: An array of identifiers which can be referrenced by individual mappings.
 *   - sourceRoot: Optional. The URL root from which all sources are relative.
 *   - sourcesContent: Optional. An array of contents of the original source files.
 *   - mappings: A string of base64 VLQs which contain the actual mappings.
 *   - file: Optional. The generated file this source map is associated with.
 *
 * Here is an example source map, taken from the source map spec[0]:
 *
 *     {
 *       version : 3,
 *       file: "out.js",
 *       sourceRoot : "",
 *       sources: ["foo.js", "bar.js"],
 *       names: ["src", "maps", "are", "fun"],
 *       mappings: "AA,AB;;ABCDE;"
 *     }
 *
 * The second parameter, if given, is a string whose value is the URL
 * at which the source map was found.  This URL is used to compute the
 * sources array.
 *
 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
 */
function BasicSourceMapConsumer(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  var version = util.getArg(sourceMap, 'version');
  var sources = util.getArg(sourceMap, 'sources');
  // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
  // requires the array) to play nice here.
  var names = util.getArg(sourceMap, 'names', []);
  var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
  var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
  var mappings = util.getArg(sourceMap, 'mappings');
  var file = util.getArg(sourceMap, 'file', null);

  // Once again, Sass deviates from the spec and supplies the version as a
  // string rather than a number, so we use loose equality checking here.
  if (version != this._version) {
    throw new Error('Unsupported version: ' + version);
  }

  if (sourceRoot) {
    sourceRoot = util.normalize(sourceRoot);
  }

  sources = sources
    .map(String)
    // Some source maps produce relative source paths like "./foo.js" instead of
    // "foo.js".  Normalize these first so that future comparisons will succeed.
    // See bugzil.la/1090768.
    .map(util.normalize)
    // Always ensure that absolute sources are internally stored relative to
    // the source root, if the source root is absolute. Not doing this would
    // be particularly problematic when the source root is a prefix of the
    // source (valid, but why??). See github issue #199 and bugzil.la/1188982.
    .map(function (source) {
      return sourceRoot && util.isAbsolute(sourceRoot) && util.isAbsolute(source)
        ? util.relative(sourceRoot, source)
        : source;
    });

  // Pass `true` below to allow duplicate names and sources. While source maps
  // are intended to be compressed and deduplicated, the TypeScript compiler
  // sometimes generates source maps with duplicates in them. See Github issue
  // #72 and bugzil.la/889492.
  this._names = ArraySet.fromArray(names.map(String), true);
  this._sources = ArraySet.fromArray(sources, true);

  this._absoluteSources = this._sources.toArray().map(function (s) {
    return util.computeSourceURL(sourceRoot, s, aSourceMapURL);
  });

  this.sourceRoot = sourceRoot;
  this.sourcesContent = sourcesContent;
  this._mappings = mappings;
  this._sourceMapURL = aSourceMapURL;
  this.file = file;
}

BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;

/**
 * Utility function to find the index of a source.  Returns -1 if not
 * found.
 */
BasicSourceMapConsumer.prototype._findSourceIndex = function(aSource) {
  var relativeSource = aSource;
  if (this.sourceRoot != null) {
    relativeSource = util.relative(this.sourceRoot, relativeSource);
  }

  if (this._sources.has(relativeSource)) {
    return this._sources.indexOf(relativeSource);
  }

  // Maybe aSource is an absolute URL as returned by |sources|.  In
  // this case we can't simply undo the transform.
  var i;
  for (i = 0; i < this._absoluteSources.length; ++i) {
    if (this._absoluteSources[i] == aSource) {
      return i;
    }
  }

  return -1;
};

/**
 * Create a BasicSourceMapConsumer from a SourceMapGenerator.
 *
 * @param SourceMapGenerator aSourceMap
 *        The source map that will be consumed.
 * @param String aSourceMapURL
 *        The URL at which the source map can be found (optional)
 * @returns BasicSourceMapConsumer
 */
BasicSourceMapConsumer.fromSourceMap =
  function SourceMapConsumer_fromSourceMap(aSourceMap, aSourceMapURL) {
    var smc = Object.create(BasicSourceMapConsumer.prototype);

    var names = smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
    var sources = smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
    smc.sourceRoot = aSourceMap._sourceRoot;
    smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
                                                            smc.sourceRoot);
    smc.file = aSourceMap._file;
    smc._sourceMapURL = aSourceMapURL;
    smc._absoluteSources = smc._sources.toArray().map(function (s) {
      return util.computeSourceURL(smc.sourceRoot, s, aSourceMapURL);
    });

    // Because we are modifying the entries (by converting string sources and
    // names to indices into the sources and names ArraySets), we have to make
    // a copy of the entry or else bad things happen. Shared mutable state
    // strikes again! See github issue #191.

    var generatedMappings = aSourceMap._mappings.toArray().slice();
    var destGeneratedMappings = smc.__generatedMappings = [];
    var destOriginalMappings = smc.__originalMappings = [];

    for (var i = 0, length = generatedMappings.length; i < length; i++) {
      var srcMapping = generatedMappings[i];
      var destMapping = new Mapping;
      destMapping.generatedLine = srcMapping.generatedLine;
      destMapping.generatedColumn = srcMapping.generatedColumn;

      if (srcMapping.source) {
        destMapping.source = sources.indexOf(srcMapping.source);
        destMapping.originalLine = srcMapping.originalLine;
        destMapping.originalColumn = srcMapping.originalColumn;

        if (srcMapping.name) {
          destMapping.name = names.indexOf(srcMapping.name);
        }

        destOriginalMappings.push(destMapping);
      }

      destGeneratedMappings.push(destMapping);
    }

    quickSort(smc.__originalMappings, util.compareByOriginalPositions);

    return smc;
  };

/**
 * The version of the source mapping spec that we are consuming.
 */
BasicSourceMapConsumer.prototype._version = 3;

/**
 * The list of original sources.
 */
Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
  get: function () {
    return this._absoluteSources.slice();
  }
});

/**
 * Provide the JIT with a nice shape / hidden class.
 */
function Mapping() {
  this.generatedLine = 0;
  this.generatedColumn = 0;
  this.source = null;
  this.originalLine = null;
  this.originalColumn = null;
  this.name = null;
}

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
BasicSourceMapConsumer.prototype._parseMappings =
  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    var generatedLine = 1;
    var previousGeneratedColumn = 0;
    var previousOriginalLine = 0;
    var previousOriginalColumn = 0;
    var previousSource = 0;
    var previousName = 0;
    var length = aStr.length;
    var index = 0;
    var cachedSegments = {};
    var temp = {};
    var originalMappings = [];
    var generatedMappings = [];
    var mapping, str, segment, end, value;

    while (index < length) {
      if (aStr.charAt(index) === ';') {
        generatedLine++;
        index++;
        previousGeneratedColumn = 0;
      }
      else if (aStr.charAt(index) === ',') {
        index++;
      }
      else {
        mapping = new Mapping();
        mapping.generatedLine = generatedLine;

        // Because each offset is encoded relative to the previous one,
        // many segments often have the same encoding. We can exploit this
        // fact by caching the parsed variable length fields of each segment,
        // allowing us to avoid a second parse if we encounter the same
        // segment again.
        for (end = index; end < length; end++) {
          if (this._charIsMappingSeparator(aStr, end)) {
            break;
          }
        }
        str = aStr.slice(index, end);

        segment = cachedSegments[str];
        if (segment) {
          index += str.length;
        } else {
          segment = [];
          while (index < end) {
            base64VLQ.decode(aStr, index, temp);
            value = temp.value;
            index = temp.rest;
            segment.push(value);
          }

          if (segment.length === 2) {
            throw new Error('Found a source, but no line and column');
          }

          if (segment.length === 3) {
            throw new Error('Found a source and line, but no column');
          }

          cachedSegments[str] = segment;
        }

        // Generated column.
        mapping.generatedColumn = previousGeneratedColumn + segment[0];
        previousGeneratedColumn = mapping.generatedColumn;

        if (segment.length > 1) {
          // Original source.
          mapping.source = previousSource + segment[1];
          previousSource += segment[1];

          // Original line.
          mapping.originalLine = previousOriginalLine + segment[2];
          previousOriginalLine = mapping.originalLine;
          // Lines are stored 0-based
          mapping.originalLine += 1;

          // Original column.
          mapping.originalColumn = previousOriginalColumn + segment[3];
          previousOriginalColumn = mapping.originalColumn;

          if (segment.length > 4) {
            // Original name.
            mapping.name = previousName + segment[4];
            previousName += segment[4];
          }
        }

        generatedMappings.push(mapping);
        if (typeof mapping.originalLine === 'number') {
          originalMappings.push(mapping);
        }
      }
    }

    quickSort(generatedMappings, util.compareByGeneratedPositionsDeflated);
    this.__generatedMappings = generatedMappings;

    quickSort(originalMappings, util.compareByOriginalPositions);
    this.__originalMappings = originalMappings;
  };

/**
 * Find the mapping that best matches the hypothetical "needle" mapping that
 * we are searching for in the given "haystack" of mappings.
 */
BasicSourceMapConsumer.prototype._findMapping =
  function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
                                         aColumnName, aComparator, aBias) {
    // To return the position we are searching for, we must first find the
    // mapping for the given position and then return the opposite position it
    // points to. Because the mappings are sorted, we can use binary search to
    // find the best mapping.

    if (aNeedle[aLineName] <= 0) {
      throw new TypeError('Line must be greater than or equal to 1, got '
                          + aNeedle[aLineName]);
    }
    if (aNeedle[aColumnName] < 0) {
      throw new TypeError('Column must be greater than or equal to 0, got '
                          + aNeedle[aColumnName]);
    }

    return binarySearch.search(aNeedle, aMappings, aComparator, aBias);
  };

/**
 * Compute the last column for each generated mapping. The last column is
 * inclusive.
 */
BasicSourceMapConsumer.prototype.computeColumnSpans =
  function SourceMapConsumer_computeColumnSpans() {
    for (var index = 0; index < this._generatedMappings.length; ++index) {
      var mapping = this._generatedMappings[index];

      // Mappings do not contain a field for the last generated columnt. We
      // can come up with an optimistic estimate, however, by assuming that
      // mappings are contiguous (i.e. given two consecutive mappings, the
      // first mapping ends where the second one starts).
      if (index + 1 < this._generatedMappings.length) {
        var nextMapping = this._generatedMappings[index + 1];

        if (mapping.generatedLine === nextMapping.generatedLine) {
          mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
          continue;
        }
      }

      // The last mapping for each line spans the entire line.
      mapping.lastGeneratedColumn = Infinity;
    }
  };

/**
 * Returns the original source, line, and column information for the generated
 * source's line and column positions provided. The only argument is an object
 * with the following properties:
 *
 *   - line: The line number in the generated source.  The line number
 *     is 1-based.
 *   - column: The column number in the generated source.  The column
 *     number is 0-based.
 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
 *
 * and an object is returned with the following properties:
 *
 *   - source: The original source file, or null.
 *   - line: The line number in the original source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the original source, or null.  The
 *     column number is 0-based.
 *   - name: The original identifier, or null.
 */
BasicSourceMapConsumer.prototype.originalPositionFor =
  function SourceMapConsumer_originalPositionFor(aArgs) {
    var needle = {
      generatedLine: util.getArg(aArgs, 'line'),
      generatedColumn: util.getArg(aArgs, 'column')
    };

    var index = this._findMapping(
      needle,
      this._generatedMappings,
      "generatedLine",
      "generatedColumn",
      util.compareByGeneratedPositionsDeflated,
      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
    );

    if (index >= 0) {
      var mapping = this._generatedMappings[index];

      if (mapping.generatedLine === needle.generatedLine) {
        var source = util.getArg(mapping, 'source', null);
        if (source !== null) {
          source = this._sources.at(source);
          source = util.computeSourceURL(this.sourceRoot, source, this._sourceMapURL);
        }
        var name = util.getArg(mapping, 'name', null);
        if (name !== null) {
          name = this._names.at(name);
        }
        return {
          source: source,
          line: util.getArg(mapping, 'originalLine', null),
          column: util.getArg(mapping, 'originalColumn', null),
          name: name
        };
      }
    }

    return {
      source: null,
      line: null,
      column: null,
      name: null
    };
  };

/**
 * Return true if we have the source content for every source in the source
 * map, false otherwise.
 */
BasicSourceMapConsumer.prototype.hasContentsOfAllSources =
  function BasicSourceMapConsumer_hasContentsOfAllSources() {
    if (!this.sourcesContent) {
      return false;
    }
    return this.sourcesContent.length >= this._sources.size() &&
      !this.sourcesContent.some(function (sc) { return sc == null; });
  };

/**
 * Returns the original source content. The only argument is the url of the
 * original source file. Returns null if no original source content is
 * available.
 */
BasicSourceMapConsumer.prototype.sourceContentFor =
  function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
    if (!this.sourcesContent) {
      return null;
    }

    var index = this._findSourceIndex(aSource);
    if (index >= 0) {
      return this.sourcesContent[index];
    }

    var relativeSource = aSource;
    if (this.sourceRoot != null) {
      relativeSource = util.relative(this.sourceRoot, relativeSource);
    }

    var url;
    if (this.sourceRoot != null
        && (url = util.urlParse(this.sourceRoot))) {
      // XXX: file:// URIs and absolute paths lead to unexpected behavior for
      // many users. We can help them out when they expect file:// URIs to
      // behave like it would if they were running a local HTTP server. See
      // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
      var fileUriAbsPath = relativeSource.replace(/^file:\/\//, "");
      if (url.scheme == "file"
          && this._sources.has(fileUriAbsPath)) {
        return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
      }

      if ((!url.path || url.path == "/")
          && this._sources.has("/" + relativeSource)) {
        return this.sourcesContent[this._sources.indexOf("/" + relativeSource)];
      }
    }

    // This function is used recursively from
    // IndexedSourceMapConsumer.prototype.sourceContentFor. In that case, we
    // don't want to throw if we can't find the source - we just want to
    // return null, so we provide a flag to exit gracefully.
    if (nullOnMissing) {
      return null;
    }
    else {
      throw new Error('"' + relativeSource + '" is not in the SourceMap.');
    }
  };

/**
 * Returns the generated line and column information for the original source,
 * line, and column positions provided. The only argument is an object with
 * the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number
 *     is 1-based.
 *   - column: The column number in the original source.  The column
 *     number is 0-based.
 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
 *
 * and an object is returned with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the generated source, or null.
 *     The column number is 0-based.
 */
BasicSourceMapConsumer.prototype.generatedPositionFor =
  function SourceMapConsumer_generatedPositionFor(aArgs) {
    var source = util.getArg(aArgs, 'source');
    source = this._findSourceIndex(source);
    if (source < 0) {
      return {
        line: null,
        column: null,
        lastColumn: null
      };
    }

    var needle = {
      source: source,
      originalLine: util.getArg(aArgs, 'line'),
      originalColumn: util.getArg(aArgs, 'column')
    };

    var index = this._findMapping(
      needle,
      this._originalMappings,
      "originalLine",
      "originalColumn",
      util.compareByOriginalPositions,
      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
    );

    if (index >= 0) {
      var mapping = this._originalMappings[index];

      if (mapping.source === needle.source) {
        return {
          line: util.getArg(mapping, 'generatedLine', null),
          column: util.getArg(mapping, 'generatedColumn', null),
          lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
        };
      }
    }

    return {
      line: null,
      column: null,
      lastColumn: null
    };
  };

exports.BasicSourceMapConsumer = BasicSourceMapConsumer;

/**
 * An IndexedSourceMapConsumer instance represents a parsed source map which
 * we can query for information. It differs from BasicSourceMapConsumer in
 * that it takes "indexed" source maps (i.e. ones with a "sections" field) as
 * input.
 *
 * The first parameter is a raw source map (either as a JSON string, or already
 * parsed to an object). According to the spec for indexed source maps, they
 * have the following attributes:
 *
 *   - version: Which version of the source map spec this map is following.
 *   - file: Optional. The generated file this source map is associated with.
 *   - sections: A list of section definitions.
 *
 * Each value under the "sections" field has two fields:
 *   - offset: The offset into the original specified at which this section
 *       begins to apply, defined as an object with a "line" and "column"
 *       field.
 *   - map: A source map definition. This source map could also be indexed,
 *       but doesn't have to be.
 *
 * Instead of the "map" field, it's also possible to have a "url" field
 * specifying a URL to retrieve a source map from, but that's currently
 * unsupported.
 *
 * Here's an example source map, taken from the source map spec[0], but
 * modified to omit a section which uses the "url" field.
 *
 *  {
 *    version : 3,
 *    file: "app.js",
 *    sections: [{
 *      offset: {line:100, column:10},
 *      map: {
 *        version : 3,
 *        file: "section.js",
 *        sources: ["foo.js", "bar.js"],
 *        names: ["src", "maps", "are", "fun"],
 *        mappings: "AAAA,E;;ABCDE;"
 *      }
 *    }],
 *  }
 *
 * The second parameter, if given, is a string whose value is the URL
 * at which the source map was found.  This URL is used to compute the
 * sources array.
 *
 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#heading=h.535es3xeprgt
 */
function IndexedSourceMapConsumer(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  var version = util.getArg(sourceMap, 'version');
  var sections = util.getArg(sourceMap, 'sections');

  if (version != this._version) {
    throw new Error('Unsupported version: ' + version);
  }

  this._sources = new ArraySet();
  this._names = new ArraySet();

  var lastOffset = {
    line: -1,
    column: 0
  };
  this._sections = sections.map(function (s) {
    if (s.url) {
      // The url field will require support for asynchronicity.
      // See https://github.com/mozilla/source-map/issues/16
      throw new Error('Support for url field in sections not implemented.');
    }
    var offset = util.getArg(s, 'offset');
    var offsetLine = util.getArg(offset, 'line');
    var offsetColumn = util.getArg(offset, 'column');

    if (offsetLine < lastOffset.line ||
        (offsetLine === lastOffset.line && offsetColumn < lastOffset.column)) {
      throw new Error('Section offsets must be ordered and non-overlapping.');
    }
    lastOffset = offset;

    return {
      generatedOffset: {
        // The offset fields are 0-based, but we use 1-based indices when
        // encoding/decoding from VLQ.
        generatedLine: offsetLine + 1,
        generatedColumn: offsetColumn + 1
      },
      consumer: new SourceMapConsumer(util.getArg(s, 'map'), aSourceMapURL)
    }
  });
}

IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer;

/**
 * The version of the source mapping spec that we are consuming.
 */
IndexedSourceMapConsumer.prototype._version = 3;

/**
 * The list of original sources.
 */
Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
  get: function () {
    var sources = [];
    for (var i = 0; i < this._sections.length; i++) {
      for (var j = 0; j < this._sections[i].consumer.sources.length; j++) {
        sources.push(this._sections[i].consumer.sources[j]);
      }
    }
    return sources;
  }
});

/**
 * Returns the original source, line, and column information for the generated
 * source's line and column positions provided. The only argument is an object
 * with the following properties:
 *
 *   - line: The line number in the generated source.  The line number
 *     is 1-based.
 *   - column: The column number in the generated source.  The column
 *     number is 0-based.
 *
 * and an object is returned with the following properties:
 *
 *   - source: The original source file, or null.
 *   - line: The line number in the original source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the original source, or null.  The
 *     column number is 0-based.
 *   - name: The original identifier, or null.
 */
IndexedSourceMapConsumer.prototype.originalPositionFor =
  function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
    var needle = {
      generatedLine: util.getArg(aArgs, 'line'),
      generatedColumn: util.getArg(aArgs, 'column')
    };

    // Find the section containing the generated position we're trying to map
    // to an original position.
    var sectionIndex = binarySearch.search(needle, this._sections,
      function(needle, section) {
        var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
        if (cmp) {
          return cmp;
        }

        return (needle.generatedColumn -
                section.generatedOffset.generatedColumn);
      });
    var section = this._sections[sectionIndex];

    if (!section) {
      return {
        source: null,
        line: null,
        column: null,
        name: null
      };
    }

    return section.consumer.originalPositionFor({
      line: needle.generatedLine -
        (section.generatedOffset.generatedLine - 1),
      column: needle.generatedColumn -
        (section.generatedOffset.generatedLine === needle.generatedLine
         ? section.generatedOffset.generatedColumn - 1
         : 0),
      bias: aArgs.bias
    });
  };

/**
 * Return true if we have the source content for every source in the source
 * map, false otherwise.
 */
IndexedSourceMapConsumer.prototype.hasContentsOfAllSources =
  function IndexedSourceMapConsumer_hasContentsOfAllSources() {
    return this._sections.every(function (s) {
      return s.consumer.hasContentsOfAllSources();
    });
  };

/**
 * Returns the original source content. The only argument is the url of the
 * original source file. Returns null if no original source content is
 * available.
 */
IndexedSourceMapConsumer.prototype.sourceContentFor =
  function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];

      var content = section.consumer.sourceContentFor(aSource, true);
      if (content) {
        return content;
      }
    }
    if (nullOnMissing) {
      return null;
    }
    else {
      throw new Error('"' + aSource + '" is not in the SourceMap.');
    }
  };

/**
 * Returns the generated line and column information for the original source,
 * line, and column positions provided. The only argument is an object with
 * the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number
 *     is 1-based.
 *   - column: The column number in the original source.  The column
 *     number is 0-based.
 *
 * and an object is returned with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *     line number is 1-based. 
 *   - column: The column number in the generated source, or null.
 *     The column number is 0-based.
 */
IndexedSourceMapConsumer.prototype.generatedPositionFor =
  function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];

      // Only consider this section if the requested source is in the list of
      // sources of the consumer.
      if (section.consumer._findSourceIndex(util.getArg(aArgs, 'source')) === -1) {
        continue;
      }
      var generatedPosition = section.consumer.generatedPositionFor(aArgs);
      if (generatedPosition) {
        var ret = {
          line: generatedPosition.line +
            (section.generatedOffset.generatedLine - 1),
          column: generatedPosition.column +
            (section.generatedOffset.generatedLine === generatedPosition.line
             ? section.generatedOffset.generatedColumn - 1
             : 0)
        };
        return ret;
      }
    }

    return {
      line: null,
      column: null
    };
  };

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
IndexedSourceMapConsumer.prototype._parseMappings =
  function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    this.__generatedMappings = [];
    this.__originalMappings = [];
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];
      var sectionMappings = section.consumer._generatedMappings;
      for (var j = 0; j < sectionMappings.length; j++) {
        var mapping = sectionMappings[j];

        var source = section.consumer._sources.at(mapping.source);
        source = util.computeSourceURL(section.consumer.sourceRoot, source, this._sourceMapURL);
        this._sources.add(source);
        source = this._sources.indexOf(source);

        var name = null;
        if (mapping.name) {
          name = section.consumer._names.at(mapping.name);
          this._names.add(name);
          name = this._names.indexOf(name);
        }

        // The mappings coming from the consumer for the section have
        // generated positions relative to the start of the section, so we
        // need to offset them to be relative to the start of the concatenated
        // generated file.
        var adjustedMapping = {
          source: source,
          generatedLine: mapping.generatedLine +
            (section.generatedOffset.generatedLine - 1),
          generatedColumn: mapping.generatedColumn +
            (section.generatedOffset.generatedLine === mapping.generatedLine
            ? section.generatedOffset.generatedColumn - 1
            : 0),
          originalLine: mapping.originalLine,
          originalColumn: mapping.originalColumn,
          name: name
        };

        this.__generatedMappings.push(adjustedMapping);
        if (typeof adjustedMapping.originalLine === 'number') {
          this.__originalMappings.push(adjustedMapping);
        }
      }
    }

    quickSort(this.__generatedMappings, util.compareByGeneratedPositionsDeflated);
    quickSort(this.__originalMappings, util.compareByOriginalPositions);
  };

exports.IndexedSourceMapConsumer = IndexedSourceMapConsumer;


/***/ }),

/***/ 277:
/***/ (function(__unusedmodule, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 *
 * Based on the Base 64 VLQ implementation in Closure Compiler:
 * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
 *
 * Copyright 2011 The Closure Compiler Authors. All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *  * Neither the name of Google Inc. nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

var base64 = __webpack_require__(947);

// A single base 64 digit can contain 6 bits of data. For the base 64 variable
// length quantities we use in the source map spec, the first bit is the sign,
// the next four bits are the actual value, and the 6th bit is the
// continuation bit. The continuation bit tells us whether there are more
// digits in this value following this digit.
//
//   Continuation
//   |    Sign
//   |    |
//   V    V
//   101011

var VLQ_BASE_SHIFT = 5;

// binary: 100000
var VLQ_BASE = 1 << VLQ_BASE_SHIFT;

// binary: 011111
var VLQ_BASE_MASK = VLQ_BASE - 1;

// binary: 100000
var VLQ_CONTINUATION_BIT = VLQ_BASE;

/**
 * Converts from a two-complement value to a value where the sign bit is
 * placed in the least significant bit.  For example, as decimals:
 *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
 *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
 */
function toVLQSigned(aValue) {
  return aValue < 0
    ? ((-aValue) << 1) + 1
    : (aValue << 1) + 0;
}

/**
 * Converts to a two-complement value from a value where the sign bit is
 * placed in the least significant bit.  For example, as decimals:
 *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
 *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
 */
function fromVLQSigned(aValue) {
  var isNegative = (aValue & 1) === 1;
  var shifted = aValue >> 1;
  return isNegative
    ? -shifted
    : shifted;
}

/**
 * Returns the base 64 VLQ encoded value.
 */
exports.encode = function base64VLQ_encode(aValue) {
  var encoded = "";
  var digit;

  var vlq = toVLQSigned(aValue);

  do {
    digit = vlq & VLQ_BASE_MASK;
    vlq >>>= VLQ_BASE_SHIFT;
    if (vlq > 0) {
      // There are still more digits in this value, so we must make sure the
      // continuation bit is marked.
      digit |= VLQ_CONTINUATION_BIT;
    }
    encoded += base64.encode(digit);
  } while (vlq > 0);

  return encoded;
};

/**
 * Decodes the next base 64 VLQ value from the given string and returns the
 * value and the rest of the string via the out parameter.
 */
exports.decode = function base64VLQ_decode(aStr, aIndex, aOutParam) {
  var strLen = aStr.length;
  var result = 0;
  var shift = 0;
  var continuation, digit;

  do {
    if (aIndex >= strLen) {
      throw new Error("Expected more digits in base 64 VLQ value.");
    }

    digit = base64.decode(aStr.charCodeAt(aIndex++));
    if (digit === -1) {
      throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1));
    }

    continuation = !!(digit & VLQ_CONTINUATION_BIT);
    digit &= VLQ_BASE_MASK;
    result = result + (digit << shift);
    shift += VLQ_BASE_SHIFT;
  } while (continuation);

  aOutParam.value = fromVLQSigned(result);
  aOutParam.rest = aIndex;
};


/***/ }),

/***/ 282:
/***/ (function(module) {

module.exports = require("module");

/***/ }),

/***/ 338:
/***/ (function(__unusedmodule, exports) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

/**
 * This is a helper function for getting values from parameter/options
 * objects.
 *
 * @param args The object we are extracting values from
 * @param name The name of the property we are getting.
 * @param defaultValue An optional value to return if the property is missing
 * from the object. If this is not specified and the property is missing, an
 * error will be thrown.
 */
function getArg(aArgs, aName, aDefaultValue) {
  if (aName in aArgs) {
    return aArgs[aName];
  } else if (arguments.length === 3) {
    return aDefaultValue;
  } else {
    throw new Error('"' + aName + '" is a required argument.');
  }
}
exports.getArg = getArg;

var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.-]*)(?::(\d+))?(.*)$/;
var dataUrlRegexp = /^data:.+\,.+$/;

function urlParse(aUrl) {
  var match = aUrl.match(urlRegexp);
  if (!match) {
    return null;
  }
  return {
    scheme: match[1],
    auth: match[2],
    host: match[3],
    port: match[4],
    path: match[5]
  };
}
exports.urlParse = urlParse;

function urlGenerate(aParsedUrl) {
  var url = '';
  if (aParsedUrl.scheme) {
    url += aParsedUrl.scheme + ':';
  }
  url += '//';
  if (aParsedUrl.auth) {
    url += aParsedUrl.auth + '@';
  }
  if (aParsedUrl.host) {
    url += aParsedUrl.host;
  }
  if (aParsedUrl.port) {
    url += ":" + aParsedUrl.port
  }
  if (aParsedUrl.path) {
    url += aParsedUrl.path;
  }
  return url;
}
exports.urlGenerate = urlGenerate;

/**
 * Normalizes a path, or the path portion of a URL:
 *
 * - Replaces consecutive slashes with one slash.
 * - Removes unnecessary '.' parts.
 * - Removes unnecessary '<dir>/..' parts.
 *
 * Based on code in the Node.js 'path' core module.
 *
 * @param aPath The path or url to normalize.
 */
function normalize(aPath) {
  var path = aPath;
  var url = urlParse(aPath);
  if (url) {
    if (!url.path) {
      return aPath;
    }
    path = url.path;
  }
  var isAbsolute = exports.isAbsolute(path);

  var parts = path.split(/\/+/);
  for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
    part = parts[i];
    if (part === '.') {
      parts.splice(i, 1);
    } else if (part === '..') {
      up++;
    } else if (up > 0) {
      if (part === '') {
        // The first part is blank if the path is absolute. Trying to go
        // above the root is a no-op. Therefore we can remove all '..' parts
        // directly after the root.
        parts.splice(i + 1, up);
        up = 0;
      } else {
        parts.splice(i, 2);
        up--;
      }
    }
  }
  path = parts.join('/');

  if (path === '') {
    path = isAbsolute ? '/' : '.';
  }

  if (url) {
    url.path = path;
    return urlGenerate(url);
  }
  return path;
}
exports.normalize = normalize;

/**
 * Joins two paths/URLs.
 *
 * @param aRoot The root path or URL.
 * @param aPath The path or URL to be joined with the root.
 *
 * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
 *   scheme-relative URL: Then the scheme of aRoot, if any, is prepended
 *   first.
 * - Otherwise aPath is a path. If aRoot is a URL, then its path portion
 *   is updated with the result and aRoot is returned. Otherwise the result
 *   is returned.
 *   - If aPath is absolute, the result is aPath.
 *   - Otherwise the two paths are joined with a slash.
 * - Joining for example 'http://' and 'www.example.com' is also supported.
 */
function join(aRoot, aPath) {
  if (aRoot === "") {
    aRoot = ".";
  }
  if (aPath === "") {
    aPath = ".";
  }
  var aPathUrl = urlParse(aPath);
  var aRootUrl = urlParse(aRoot);
  if (aRootUrl) {
    aRoot = aRootUrl.path || '/';
  }

  // `join(foo, '//www.example.org')`
  if (aPathUrl && !aPathUrl.scheme) {
    if (aRootUrl) {
      aPathUrl.scheme = aRootUrl.scheme;
    }
    return urlGenerate(aPathUrl);
  }

  if (aPathUrl || aPath.match(dataUrlRegexp)) {
    return aPath;
  }

  // `join('http://', 'www.example.com')`
  if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
    aRootUrl.host = aPath;
    return urlGenerate(aRootUrl);
  }

  var joined = aPath.charAt(0) === '/'
    ? aPath
    : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);

  if (aRootUrl) {
    aRootUrl.path = joined;
    return urlGenerate(aRootUrl);
  }
  return joined;
}
exports.join = join;

exports.isAbsolute = function (aPath) {
  return aPath.charAt(0) === '/' || urlRegexp.test(aPath);
};

/**
 * Make a path relative to a URL or another path.
 *
 * @param aRoot The root path or URL.
 * @param aPath The path or URL to be made relative to aRoot.
 */
function relative(aRoot, aPath) {
  if (aRoot === "") {
    aRoot = ".";
  }

  aRoot = aRoot.replace(/\/$/, '');

  // It is possible for the path to be above the root. In this case, simply
  // checking whether the root is a prefix of the path won't work. Instead, we
  // need to remove components from the root one by one, until either we find
  // a prefix that fits, or we run out of components to remove.
  var level = 0;
  while (aPath.indexOf(aRoot + '/') !== 0) {
    var index = aRoot.lastIndexOf("/");
    if (index < 0) {
      return aPath;
    }

    // If the only part of the root that is left is the scheme (i.e. http://,
    // file:///, etc.), one or more slashes (/), or simply nothing at all, we
    // have exhausted all components, so the path is not relative to the root.
    aRoot = aRoot.slice(0, index);
    if (aRoot.match(/^([^\/]+:\/)?\/*$/)) {
      return aPath;
    }

    ++level;
  }

  // Make sure we add a "../" for each component we removed from the root.
  return Array(level + 1).join("../") + aPath.substr(aRoot.length + 1);
}
exports.relative = relative;

var supportsNullProto = (function () {
  var obj = Object.create(null);
  return !('__proto__' in obj);
}());

function identity (s) {
  return s;
}

/**
 * Because behavior goes wacky when you set `__proto__` on objects, we
 * have to prefix all the strings in our set with an arbitrary character.
 *
 * See https://github.com/mozilla/source-map/pull/31 and
 * https://github.com/mozilla/source-map/issues/30
 *
 * @param String aStr
 */
function toSetString(aStr) {
  if (isProtoString(aStr)) {
    return '$' + aStr;
  }

  return aStr;
}
exports.toSetString = supportsNullProto ? identity : toSetString;

function fromSetString(aStr) {
  if (isProtoString(aStr)) {
    return aStr.slice(1);
  }

  return aStr;
}
exports.fromSetString = supportsNullProto ? identity : fromSetString;

function isProtoString(s) {
  if (!s) {
    return false;
  }

  var length = s.length;

  if (length < 9 /* "__proto__".length */) {
    return false;
  }

  if (s.charCodeAt(length - 1) !== 95  /* '_' */ ||
      s.charCodeAt(length - 2) !== 95  /* '_' */ ||
      s.charCodeAt(length - 3) !== 111 /* 'o' */ ||
      s.charCodeAt(length - 4) !== 116 /* 't' */ ||
      s.charCodeAt(length - 5) !== 111 /* 'o' */ ||
      s.charCodeAt(length - 6) !== 114 /* 'r' */ ||
      s.charCodeAt(length - 7) !== 112 /* 'p' */ ||
      s.charCodeAt(length - 8) !== 95  /* '_' */ ||
      s.charCodeAt(length - 9) !== 95  /* '_' */) {
    return false;
  }

  for (var i = length - 10; i >= 0; i--) {
    if (s.charCodeAt(i) !== 36 /* '$' */) {
      return false;
    }
  }

  return true;
}

/**
 * Comparator between two mappings where the original positions are compared.
 *
 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
 * mappings with the same original source/line/column, but different generated
 * line and column the same. Useful when searching for a mapping with a
 * stubbed out mapping.
 */
function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
  var cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0 || onlyCompareOriginal) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByOriginalPositions = compareByOriginalPositions;

/**
 * Comparator between two mappings with deflated source and name indices where
 * the generated positions are compared.
 *
 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
 * mappings with the same generated line and column, but different
 * source/name/original line and column the same. Useful when searching for a
 * mapping with a stubbed out mapping.
 */
function compareByGeneratedPositionsDeflated(mappingA, mappingB, onlyCompareGenerated) {
  var cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0 || onlyCompareGenerated) {
    return cmp;
  }

  cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByGeneratedPositionsDeflated = compareByGeneratedPositionsDeflated;

function strcmp(aStr1, aStr2) {
  if (aStr1 === aStr2) {
    return 0;
  }

  if (aStr1 === null) {
    return 1; // aStr2 !== null
  }

  if (aStr2 === null) {
    return -1; // aStr1 !== null
  }

  if (aStr1 > aStr2) {
    return 1;
  }

  return -1;
}

/**
 * Comparator between two mappings with inflated source and name strings where
 * the generated positions are compared.
 */
function compareByGeneratedPositionsInflated(mappingA, mappingB) {
  var cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByGeneratedPositionsInflated = compareByGeneratedPositionsInflated;

/**
 * Strip any JSON XSSI avoidance prefix from the string (as documented
 * in the source maps specification), and then parse the string as
 * JSON.
 */
function parseSourceMapInput(str) {
  return JSON.parse(str.replace(/^\)]}'[^\n]*\n/, ''));
}
exports.parseSourceMapInput = parseSourceMapInput;

/**
 * Compute the URL of a source given the the source root, the source's
 * URL, and the source map's URL.
 */
function computeSourceURL(sourceRoot, sourceURL, sourceMapURL) {
  sourceURL = sourceURL || '';

  if (sourceRoot) {
    // This follows what Chrome does.
    if (sourceRoot[sourceRoot.length - 1] !== '/' && sourceURL[0] !== '/') {
      sourceRoot += '/';
    }
    // The spec says:
    //   Line 4: An optional source root, useful for relocating source
    //   files on a server or removing repeated values in the
    //   “sources” entry.  This value is prepended to the individual
    //   entries in the “source” field.
    sourceURL = sourceRoot + sourceURL;
  }

  // Historically, SourceMapConsumer did not take the sourceMapURL as
  // a parameter.  This mode is still somewhat supported, which is why
  // this code block is conditional.  However, it's preferable to pass
  // the source map URL to SourceMapConsumer, so that this function
  // can implement the source URL resolution algorithm as outlined in
  // the spec.  This block is basically the equivalent of:
  //    new URL(sourceURL, sourceMapURL).toString()
  // ... except it avoids using URL, which wasn't available in the
  // older releases of node still supported by this library.
  //
  // The spec says:
  //   If the sources are not absolute URLs after prepending of the
  //   “sourceRoot”, the sources are resolved relative to the
  //   SourceMap (like resolving script src in a html document).
  if (sourceMapURL) {
    var parsed = urlParse(sourceMapURL);
    if (!parsed) {
      throw new Error("sourceMapURL could not be parsed");
    }
    if (parsed.path) {
      // Strip the last path component, but keep the "/".
      var index = parsed.path.lastIndexOf('/');
      if (index >= 0) {
        parsed.path = parsed.path.substring(0, index + 1);
      }
    }
    sourceURL = join(urlGenerate(parsed), sourceURL);
  }

  return normalize(sourceURL);
}
exports.computeSourceURL = computeSourceURL;


/***/ }),

/***/ 413:
/***/ (function(module) {

module.exports = require("stream");

/***/ }),

/***/ 451:
/***/ (function(__unusedmodule, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2014 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = __webpack_require__(338);

/**
 * Determine whether mappingB is after mappingA with respect to generated
 * position.
 */
function generatedPositionAfter(mappingA, mappingB) {
  // Optimized for most common case
  var lineA = mappingA.generatedLine;
  var lineB = mappingB.generatedLine;
  var columnA = mappingA.generatedColumn;
  var columnB = mappingB.generatedColumn;
  return lineB > lineA || lineB == lineA && columnB >= columnA ||
         util.compareByGeneratedPositionsInflated(mappingA, mappingB) <= 0;
}

/**
 * A data structure to provide a sorted view of accumulated mappings in a
 * performance conscious manner. It trades a neglibable overhead in general
 * case for a large speedup in case of mappings being added in order.
 */
function MappingList() {
  this._array = [];
  this._sorted = true;
  // Serves as infimum
  this._last = {generatedLine: -1, generatedColumn: 0};
}

/**
 * Iterate through internal items. This method takes the same arguments that
 * `Array.prototype.forEach` takes.
 *
 * NOTE: The order of the mappings is NOT guaranteed.
 */
MappingList.prototype.unsortedForEach =
  function MappingList_forEach(aCallback, aThisArg) {
    this._array.forEach(aCallback, aThisArg);
  };

/**
 * Add the given source mapping.
 *
 * @param Object aMapping
 */
MappingList.prototype.add = function MappingList_add(aMapping) {
  if (generatedPositionAfter(this._last, aMapping)) {
    this._last = aMapping;
    this._array.push(aMapping);
  } else {
    this._sorted = false;
    this._array.push(aMapping);
  }
};

/**
 * Returns the flat, sorted array of mappings. The mappings are sorted by
 * generated position.
 *
 * WARNING: This method returns internal data without copying, for
 * performance. The return value must NOT be mutated, and should be treated as
 * an immutable borrow. If you want to take ownership, you must make your own
 * copy.
 */
MappingList.prototype.toArray = function MappingList_toArray() {
  if (!this._sorted) {
    this._array.sort(util.compareByGeneratedPositionsInflated);
    this._sorted = true;
  }
  return this._array;
};

exports.MappingList = MappingList;


/***/ }),

/***/ 454:
/***/ (function(__unusedmodule, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var base64VLQ = __webpack_require__(277);
var util = __webpack_require__(338);
var ArraySet = __webpack_require__(969).ArraySet;
var MappingList = __webpack_require__(451).MappingList;

/**
 * An instance of the SourceMapGenerator represents a source map which is
 * being built incrementally. You may pass an object with the following
 * properties:
 *
 *   - file: The filename of the generated source.
 *   - sourceRoot: A root for all relative URLs in this source map.
 */
function SourceMapGenerator(aArgs) {
  if (!aArgs) {
    aArgs = {};
  }
  this._file = util.getArg(aArgs, 'file', null);
  this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
  this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
  this._sources = new ArraySet();
  this._names = new ArraySet();
  this._mappings = new MappingList();
  this._sourcesContents = null;
}

SourceMapGenerator.prototype._version = 3;

/**
 * Creates a new SourceMapGenerator based on a SourceMapConsumer
 *
 * @param aSourceMapConsumer The SourceMap.
 */
SourceMapGenerator.fromSourceMap =
  function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
    var sourceRoot = aSourceMapConsumer.sourceRoot;
    var generator = new SourceMapGenerator({
      file: aSourceMapConsumer.file,
      sourceRoot: sourceRoot
    });
    aSourceMapConsumer.eachMapping(function (mapping) {
      var newMapping = {
        generated: {
          line: mapping.generatedLine,
          column: mapping.generatedColumn
        }
      };

      if (mapping.source != null) {
        newMapping.source = mapping.source;
        if (sourceRoot != null) {
          newMapping.source = util.relative(sourceRoot, newMapping.source);
        }

        newMapping.original = {
          line: mapping.originalLine,
          column: mapping.originalColumn
        };

        if (mapping.name != null) {
          newMapping.name = mapping.name;
        }
      }

      generator.addMapping(newMapping);
    });
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var sourceRelative = sourceFile;
      if (sourceRoot !== null) {
        sourceRelative = util.relative(sourceRoot, sourceFile);
      }

      if (!generator._sources.has(sourceRelative)) {
        generator._sources.add(sourceRelative);
      }

      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        generator.setSourceContent(sourceFile, content);
      }
    });
    return generator;
  };

/**
 * Add a single mapping from original source line and column to the generated
 * source's line and column for this source map being created. The mapping
 * object should have the following properties:
 *
 *   - generated: An object with the generated line and column positions.
 *   - original: An object with the original line and column positions.
 *   - source: The original source file (relative to the sourceRoot).
 *   - name: An optional original token name for this mapping.
 */
SourceMapGenerator.prototype.addMapping =
  function SourceMapGenerator_addMapping(aArgs) {
    var generated = util.getArg(aArgs, 'generated');
    var original = util.getArg(aArgs, 'original', null);
    var source = util.getArg(aArgs, 'source', null);
    var name = util.getArg(aArgs, 'name', null);

    if (!this._skipValidation) {
      this._validateMapping(generated, original, source, name);
    }

    if (source != null) {
      source = String(source);
      if (!this._sources.has(source)) {
        this._sources.add(source);
      }
    }

    if (name != null) {
      name = String(name);
      if (!this._names.has(name)) {
        this._names.add(name);
      }
    }

    this._mappings.add({
      generatedLine: generated.line,
      generatedColumn: generated.column,
      originalLine: original != null && original.line,
      originalColumn: original != null && original.column,
      source: source,
      name: name
    });
  };

/**
 * Set the source content for a source file.
 */
SourceMapGenerator.prototype.setSourceContent =
  function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
    var source = aSourceFile;
    if (this._sourceRoot != null) {
      source = util.relative(this._sourceRoot, source);
    }

    if (aSourceContent != null) {
      // Add the source content to the _sourcesContents map.
      // Create a new _sourcesContents map if the property is null.
      if (!this._sourcesContents) {
        this._sourcesContents = Object.create(null);
      }
      this._sourcesContents[util.toSetString(source)] = aSourceContent;
    } else if (this._sourcesContents) {
      // Remove the source file from the _sourcesContents map.
      // If the _sourcesContents map is empty, set the property to null.
      delete this._sourcesContents[util.toSetString(source)];
      if (Object.keys(this._sourcesContents).length === 0) {
        this._sourcesContents = null;
      }
    }
  };

/**
 * Applies the mappings of a sub-source-map for a specific source file to the
 * source map being generated. Each mapping to the supplied source file is
 * rewritten using the supplied source map. Note: The resolution for the
 * resulting mappings is the minimium of this map and the supplied map.
 *
 * @param aSourceMapConsumer The source map to be applied.
 * @param aSourceFile Optional. The filename of the source file.
 *        If omitted, SourceMapConsumer's file property will be used.
 * @param aSourceMapPath Optional. The dirname of the path to the source map
 *        to be applied. If relative, it is relative to the SourceMapConsumer.
 *        This parameter is needed when the two source maps aren't in the same
 *        directory, and the source map to be applied contains relative source
 *        paths. If so, those relative source paths need to be rewritten
 *        relative to the SourceMapGenerator.
 */
SourceMapGenerator.prototype.applySourceMap =
  function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
    var sourceFile = aSourceFile;
    // If aSourceFile is omitted, we will use the file property of the SourceMap
    if (aSourceFile == null) {
      if (aSourceMapConsumer.file == null) {
        throw new Error(
          'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
          'or the source map\'s "file" property. Both were omitted.'
        );
      }
      sourceFile = aSourceMapConsumer.file;
    }
    var sourceRoot = this._sourceRoot;
    // Make "sourceFile" relative if an absolute Url is passed.
    if (sourceRoot != null) {
      sourceFile = util.relative(sourceRoot, sourceFile);
    }
    // Applying the SourceMap can add and remove items from the sources and
    // the names array.
    var newSources = new ArraySet();
    var newNames = new ArraySet();

    // Find mappings for the "sourceFile"
    this._mappings.unsortedForEach(function (mapping) {
      if (mapping.source === sourceFile && mapping.originalLine != null) {
        // Check if it can be mapped by the source map, then update the mapping.
        var original = aSourceMapConsumer.originalPositionFor({
          line: mapping.originalLine,
          column: mapping.originalColumn
        });
        if (original.source != null) {
          // Copy mapping
          mapping.source = original.source;
          if (aSourceMapPath != null) {
            mapping.source = util.join(aSourceMapPath, mapping.source)
          }
          if (sourceRoot != null) {
            mapping.source = util.relative(sourceRoot, mapping.source);
          }
          mapping.originalLine = original.line;
          mapping.originalColumn = original.column;
          if (original.name != null) {
            mapping.name = original.name;
          }
        }
      }

      var source = mapping.source;
      if (source != null && !newSources.has(source)) {
        newSources.add(source);
      }

      var name = mapping.name;
      if (name != null && !newNames.has(name)) {
        newNames.add(name);
      }

    }, this);
    this._sources = newSources;
    this._names = newNames;

    // Copy sourcesContents of applied map.
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        if (aSourceMapPath != null) {
          sourceFile = util.join(aSourceMapPath, sourceFile);
        }
        if (sourceRoot != null) {
          sourceFile = util.relative(sourceRoot, sourceFile);
        }
        this.setSourceContent(sourceFile, content);
      }
    }, this);
  };

/**
 * A mapping can have one of the three levels of data:
 *
 *   1. Just the generated position.
 *   2. The Generated position, original position, and original source.
 *   3. Generated and original position, original source, as well as a name
 *      token.
 *
 * To maintain consistency, we validate that any new mapping being added falls
 * in to one of these categories.
 */
SourceMapGenerator.prototype._validateMapping =
  function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
                                              aName) {
    // When aOriginal is truthy but has empty values for .line and .column,
    // it is most likely a programmer error. In this case we throw a very
    // specific error message to try to guide them the right way.
    // For example: https://github.com/Polymer/polymer-bundler/pull/519
    if (aOriginal && typeof aOriginal.line !== 'number' && typeof aOriginal.column !== 'number') {
        throw new Error(
            'original.line and original.column are not numbers -- you probably meant to omit ' +
            'the original mapping entirely and only map the generated position. If so, pass ' +
            'null for the original mapping instead of an object with empty or null values.'
        );
    }

    if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
        && aGenerated.line > 0 && aGenerated.column >= 0
        && !aOriginal && !aSource && !aName) {
      // Case 1.
      return;
    }
    else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
             && aOriginal && 'line' in aOriginal && 'column' in aOriginal
             && aGenerated.line > 0 && aGenerated.column >= 0
             && aOriginal.line > 0 && aOriginal.column >= 0
             && aSource) {
      // Cases 2 and 3.
      return;
    }
    else {
      throw new Error('Invalid mapping: ' + JSON.stringify({
        generated: aGenerated,
        source: aSource,
        original: aOriginal,
        name: aName
      }));
    }
  };

/**
 * Serialize the accumulated mappings in to the stream of base 64 VLQs
 * specified by the source map format.
 */
SourceMapGenerator.prototype._serializeMappings =
  function SourceMapGenerator_serializeMappings() {
    var previousGeneratedColumn = 0;
    var previousGeneratedLine = 1;
    var previousOriginalColumn = 0;
    var previousOriginalLine = 0;
    var previousName = 0;
    var previousSource = 0;
    var result = '';
    var next;
    var mapping;
    var nameIdx;
    var sourceIdx;

    var mappings = this._mappings.toArray();
    for (var i = 0, len = mappings.length; i < len; i++) {
      mapping = mappings[i];
      next = ''

      if (mapping.generatedLine !== previousGeneratedLine) {
        previousGeneratedColumn = 0;
        while (mapping.generatedLine !== previousGeneratedLine) {
          next += ';';
          previousGeneratedLine++;
        }
      }
      else {
        if (i > 0) {
          if (!util.compareByGeneratedPositionsInflated(mapping, mappings[i - 1])) {
            continue;
          }
          next += ',';
        }
      }

      next += base64VLQ.encode(mapping.generatedColumn
                                 - previousGeneratedColumn);
      previousGeneratedColumn = mapping.generatedColumn;

      if (mapping.source != null) {
        sourceIdx = this._sources.indexOf(mapping.source);
        next += base64VLQ.encode(sourceIdx - previousSource);
        previousSource = sourceIdx;

        // lines are stored 0-based in SourceMap spec version 3
        next += base64VLQ.encode(mapping.originalLine - 1
                                   - previousOriginalLine);
        previousOriginalLine = mapping.originalLine - 1;

        next += base64VLQ.encode(mapping.originalColumn
                                   - previousOriginalColumn);
        previousOriginalColumn = mapping.originalColumn;

        if (mapping.name != null) {
          nameIdx = this._names.indexOf(mapping.name);
          next += base64VLQ.encode(nameIdx - previousName);
          previousName = nameIdx;
        }
      }

      result += next;
    }

    return result;
  };

SourceMapGenerator.prototype._generateSourcesContent =
  function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
    return aSources.map(function (source) {
      if (!this._sourcesContents) {
        return null;
      }
      if (aSourceRoot != null) {
        source = util.relative(aSourceRoot, source);
      }
      var key = util.toSetString(source);
      return Object.prototype.hasOwnProperty.call(this._sourcesContents, key)
        ? this._sourcesContents[key]
        : null;
    }, this);
  };

/**
 * Externalize the source map.
 */
SourceMapGenerator.prototype.toJSON =
  function SourceMapGenerator_toJSON() {
    var map = {
      version: this._version,
      sources: this._sources.toArray(),
      names: this._names.toArray(),
      mappings: this._serializeMappings()
    };
    if (this._file != null) {
      map.file = this._file;
    }
    if (this._sourceRoot != null) {
      map.sourceRoot = this._sourceRoot;
    }
    if (this._sourcesContents) {
      map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
    }

    return map;
  };

/**
 * Render the source map being generated to a string.
 */
SourceMapGenerator.prototype.toString =
  function SourceMapGenerator_toString() {
    return JSON.stringify(this.toJSON());
  };

exports.SourceMapGenerator = SourceMapGenerator;


/***/ }),

/***/ 501:
/***/ (function(module) {

var toString = Object.prototype.toString

var isModern = (
  typeof Buffer.alloc === 'function' &&
  typeof Buffer.allocUnsafe === 'function' &&
  typeof Buffer.from === 'function'
)

function isArrayBuffer (input) {
  return toString.call(input).slice(8, -1) === 'ArrayBuffer'
}

function fromArrayBuffer (obj, byteOffset, length) {
  byteOffset >>>= 0

  var maxLength = obj.byteLength - byteOffset

  if (maxLength < 0) {
    throw new RangeError("'offset' is out of bounds")
  }

  if (length === undefined) {
    length = maxLength
  } else {
    length >>>= 0

    if (length > maxLength) {
      throw new RangeError("'length' is out of bounds")
    }
  }

  return isModern
    ? Buffer.from(obj.slice(byteOffset, byteOffset + length))
    : new Buffer(new Uint8Array(obj.slice(byteOffset, byteOffset + length)))
}

function fromString (string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('"encoding" must be a valid string encoding')
  }

  return isModern
    ? Buffer.from(string, encoding)
    : new Buffer(string, encoding)
}

function bufferFrom (value, encodingOrOffset, length) {
  if (typeof value === 'number') {
    throw new TypeError('"value" argument must not be a number')
  }

  if (isArrayBuffer(value)) {
    return fromArrayBuffer(value, encodingOrOffset, length)
  }

  if (typeof value === 'string') {
    return fromString(value, encodingOrOffset)
  }

  return isModern
    ? Buffer.from(value)
    : new Buffer(value)
}

module.exports = bufferFrom


/***/ }),

/***/ 554:
/***/ (function(__unusedmodule, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);

// CONCATENATED MODULE: ./src/err-msg.js
function errMsg(errCode, msg) {
  if (process.env.SYSTEM_PRODUCTION)
    return (msg || "") + " (SystemJS https://git.io/JvFET#" + errCode + ")";
  else
    return (msg || "") + " (SystemJS Error#" + errCode + " " + "https://git.io/JvFET#" + errCode + ")";
}
// CONCATENATED MODULE: ./src/common.js


var hasSymbol = typeof Symbol !== 'undefined';
var hasSelf = typeof self !== 'undefined';
var hasDocument = typeof document !== 'undefined';

var envGlobal = hasSelf ? self : global;


// Loader-scoped baseUrl supported in Node.js only
var BASE_URL = hasSymbol ? Symbol() : '_';

var baseUrl;

if (hasDocument) {
  var baseEl = document.querySelector('base[href]');
  if (baseEl)
    baseUrl = baseEl.href;
}

if (!baseUrl && typeof location !== 'undefined') {
  baseUrl = location.href.split('#')[0].split('?')[0];
  var lastSepIndex = baseUrl.lastIndexOf('/');
  if (lastSepIndex !== -1)
    baseUrl = baseUrl.slice(0, lastSepIndex + 1);
}

if (!process.env.SYSTEM_BROWSER && !baseUrl && typeof process !== 'undefined') {
  var cwd = process.cwd();
  // TODO: encoding edge cases
  baseUrl = 'file://' + (cwd[0] === '/' ? '' : '/') + cwd.replace(/\\/g, '/') + '/';
}

var backslashRegEx = /\\/g;
function resolveIfNotPlainOrUrl (relUrl, parentUrl) {
  if (relUrl.indexOf('\\') !== -1)
    relUrl = relUrl.replace(backslashRegEx, '/');
  // protocol-relative
  if (relUrl[0] === '/' && relUrl[1] === '/') {
    return parentUrl.slice(0, parentUrl.indexOf(':') + 1) + relUrl;
  }
  // relative-url
  else if (relUrl[0] === '.' && (relUrl[1] === '/' || relUrl[1] === '.' && (relUrl[2] === '/' || relUrl.length === 2 && (relUrl += '/')) ||
      relUrl.length === 1  && (relUrl += '/')) ||
      relUrl[0] === '/') {
    var parentProtocol = parentUrl.slice(0, parentUrl.indexOf(':') + 1);
    // Disabled, but these cases will give inconsistent results for deep backtracking
    //if (parentUrl[parentProtocol.length] !== '/')
    //  throw Error('Cannot resolve');
    // read pathname from parent URL
    // pathname taken to be part after leading "/"
    var pathname;
    if (parentUrl[parentProtocol.length + 1] === '/') {
      // resolving to a :// so we need to read out the auth and host
      if (parentProtocol !== 'file:') {
        pathname = parentUrl.slice(parentProtocol.length + 2);
        pathname = pathname.slice(pathname.indexOf('/') + 1);
      }
      else {
        pathname = parentUrl.slice(8);
      }
    }
    else {
      // resolving to :/ so pathname is the /... part
      pathname = parentUrl.slice(parentProtocol.length + (parentUrl[parentProtocol.length] === '/'));
    }

    if (relUrl[0] === '/')
      return parentUrl.slice(0, parentUrl.length - pathname.length - 1) + relUrl;

    // join together and split for removal of .. and . segments
    // looping the string instead of anything fancy for perf reasons
    // '../../../../../z' resolved to 'x/y' is just 'z'
    var segmented = pathname.slice(0, pathname.lastIndexOf('/') + 1) + relUrl;

    var output = [];
    var segmentIndex = -1;
    for (var i = 0; i < segmented.length; i++) {
      // busy reading a segment - only terminate on '/'
      if (segmentIndex !== -1) {
        if (segmented[i] === '/') {
          output.push(segmented.slice(segmentIndex, i + 1));
          segmentIndex = -1;
        }
      }

      // new segment - check if it is relative
      else if (segmented[i] === '.') {
        // ../ segment
        if (segmented[i + 1] === '.' && (segmented[i + 2] === '/' || i + 2 === segmented.length)) {
          output.pop();
          i += 2;
        }
        // ./ segment
        else if (segmented[i + 1] === '/' || i + 1 === segmented.length) {
          i += 1;
        }
        else {
          // the start of a new segment as below
          segmentIndex = i;
        }
      }
      // it is the start of a new segment
      else {
        segmentIndex = i;
      }
    }
    // finish reading out the last segment
    if (segmentIndex !== -1)
      output.push(segmented.slice(segmentIndex));
    return parentUrl.slice(0, parentUrl.length - pathname.length) + output.join('');
  }
}

/*
 * Import maps implementation
 *
 * To make lookups fast we pre-resolve the entire import map
 * and then match based on backtracked hash lookups
 *
 */

function resolveUrl (relUrl, parentUrl) {
  return resolveIfNotPlainOrUrl(relUrl, parentUrl) || (relUrl.indexOf(':') !== -1 ? relUrl : resolveIfNotPlainOrUrl('./' + relUrl, parentUrl));
}

function objectAssign (to, from) {
  for (var p in from)
    to[p] = from[p];
  return to;
}

function resolveAndComposePackages (packages, outPackages, baseUrl, parentMap, parentUrl) {
  for (var p in packages) {
    var resolvedLhs = resolveIfNotPlainOrUrl(p, baseUrl) || p;
    var rhs = packages[p];
    // package fallbacks not currently supported
    if (typeof rhs !== 'string')
      continue;
    var mapped = resolveImportMap(parentMap, resolveIfNotPlainOrUrl(rhs, baseUrl) || rhs, parentUrl);
    if (!mapped) {
      if (process.env.SYSTEM_PRODUCTION)
        targetWarning('W1', p, rhs);
      else
        targetWarning('W1', p, rhs, 'bare specifier did not resolve');
    }
    else
      outPackages[resolvedLhs] = mapped;
  }
}

function resolveAndComposeImportMap (json, baseUrl, parentMap) {
  var outMap = { imports: objectAssign({}, parentMap.imports), scopes: objectAssign({}, parentMap.scopes) };

  if (json.imports)
    resolveAndComposePackages(json.imports, outMap.imports, baseUrl, parentMap, null);

  if (json.scopes)
    for (var s in json.scopes) {
      var resolvedScope = resolveUrl(s, baseUrl);
      resolveAndComposePackages(json.scopes[s], outMap.scopes[resolvedScope] || (outMap.scopes[resolvedScope] = {}), baseUrl, parentMap, resolvedScope);
    }

  return outMap;
}

function getMatch (path, matchObj) {
  if (matchObj[path])
    return path;
  var sepIndex = path.length;
  do {
    var segment = path.slice(0, sepIndex + 1);
    if (segment in matchObj)
      return segment;
  } while ((sepIndex = path.lastIndexOf('/', sepIndex - 1)) !== -1)
}

function applyPackages (id, packages) {
  var pkgName = getMatch(id, packages);
  if (pkgName) {
    var pkg = packages[pkgName];
    if (pkg === null) return;
    if (id.length > pkgName.length && pkg[pkg.length - 1] !== '/') {
      if (process.env.SYSTEM_PRODUCTION)
        targetWarning('W2', pkgName, pkg);
      else
        targetWarning('W2', pkgName, pkg, "should have a trailing '/'");
    }
    else
      return pkg + id.slice(pkgName.length);
  }
}

function targetWarning (code, match, target, msg) {
  console.warn(errMsg(code, process.env.SYSTEM_PRODUCTION ? [target, match].join(', ') : "Package target " + msg + ", resolving target '" + target + "' for " + match));
}

function resolveImportMap (importMap, resolvedOrPlain, parentUrl) {
  var scopes = importMap.scopes;
  var scopeUrl = parentUrl && getMatch(parentUrl, scopes);
  while (scopeUrl) {
    var packageResolution = applyPackages(resolvedOrPlain, scopes[scopeUrl]);
    if (packageResolution)
      return packageResolution;
    scopeUrl = getMatch(scopeUrl.slice(0, scopeUrl.lastIndexOf('/')), scopes);
  }
  return applyPackages(resolvedOrPlain, importMap.imports) || resolvedOrPlain.indexOf(':') !== -1 && resolvedOrPlain;
}

// CONCATENATED MODULE: ./src/system-core.js
/*
 * SystemJS Core
 * 
 * Provides
 * - System.import
 * - System.register support for
 *     live bindings, function hoisting through circular references,
 *     reexports, dynamic import, import.meta.url, top-level await
 * - System.getRegister to get the registration
 * - Symbol.toStringTag support in Module objects
 * - Hookable System.createContext to customize import.meta
 * - System.onload(err, id, deps) handler for tracing / hot-reloading
 * 
 * Core comes with no System.prototype.resolve or
 * System.prototype.instantiate implementations
 */




var toStringTag = hasSymbol && Symbol.toStringTag;
var REGISTRY = hasSymbol ? Symbol() : '@';

function SystemJS () {
  this[REGISTRY] = {};
}

var system_core_systemJSPrototype = SystemJS.prototype;

system_core_systemJSPrototype.import = function (id, parentUrl) {
  var loader = this;
  return Promise.resolve(loader.prepareImport())
  .then(function() {
    return loader.resolve(id, parentUrl);
  })
  .then(function (id) {
    var load = getOrCreateLoad(loader, id);
    return load.C || topLevelLoad(loader, load);
  });
};

// Hookable createContext function -> allowing eg custom import meta
system_core_systemJSPrototype.createContext = function (parentId) {
  return {
    url: parentId
  };
};

// onLoad(err, id, deps) provided for tracing / hot-reloading
if (!process.env.SYSTEM_PRODUCTION)
  system_core_systemJSPrototype.onload = function () {};
function loadToId (load) {
  return load.id;
}
function triggerOnload (loader, load, err) {
  loader.onload(err, load.id, load.d && load.d.map(loadToId));
  if (err)
    throw err;
}

var lastRegister;
system_core_systemJSPrototype.register = function (deps, declare) {
  lastRegister = [deps, declare];
};

/*
 * getRegister provides the last anonymous System.register call
 */
system_core_systemJSPrototype.getRegister = function () {
  var _lastRegister = lastRegister;
  lastRegister = undefined;
  return _lastRegister;
};

function getOrCreateLoad (loader, id, firstParentUrl) {
  var load = loader[REGISTRY][id];
  if (load)
    return load;

  var importerSetters = [];
  var ns = Object.create(null);
  if (toStringTag)
    Object.defineProperty(ns, toStringTag, { value: 'Module' });
  
  var instantiatePromise = Promise.resolve()
  .then(function () {
    return loader.instantiate(id, firstParentUrl);
  })
  .then(function (registration) {
    if (!registration)
      throw Error(errMsg(2, process.env.SYSTEM_PRODUCTION ? id : 'Module ' + id + ' did not instantiate'));
    function _export (name, value) {
      // note if we have hoisted exports (including reexports)
      load.h = true;
      var changed = false;
      if (typeof name !== 'object') {
        if (!(name in ns) || ns[name] !== value) {
          ns[name] = value;
          changed = true;
        }
      }
      else {
        for (var p in name) {
          var value = name[p];
          if (!(p in ns) || ns[p] !== value) {
            ns[p] = value;
            changed = true;
          }
        }

        if (name.__esModule) {
          ns.__esModule = name.__esModule;
        }
      }
      if (changed)
        for (var i = 0; i < importerSetters.length; i++) {
          var setter = importerSetters[i];
          if (setter) setter(ns);
        }
      return value;
    }
    var declared = registration[1](_export, registration[1].length === 2 ? {
      import: function (importId) {
        return loader.import(importId, id);
      },
      meta: loader.createContext(id)
    } : undefined);
    load.e = declared.execute || function () {};
    return [registration[0], declared.setters || []];
  });

  if (!process.env.SYSTEM_PRODUCTION)
    instantiatePromise = instantiatePromise.catch(function (err) {
      triggerOnload(loader, load, err);
    });

  var linkPromise = instantiatePromise
  .then(function (instantiation) {
    return Promise.all(instantiation[0].map(function (dep, i) {
      var setter = instantiation[1][i];
      return Promise.resolve(loader.resolve(dep, id))
      .then(function (depId) {
        var depLoad = getOrCreateLoad(loader, depId, id);
        // depLoad.I may be undefined for already-evaluated
        return Promise.resolve(depLoad.I)
        .then(function () {
          if (setter) {
            depLoad.i.push(setter);
            // only run early setters when there are hoisted exports of that module
            // the timing works here as pending hoisted export calls will trigger through importerSetters
            if (depLoad.h || !depLoad.I)
              setter(depLoad.n);
          }
          return depLoad;
        });
      })
    }))
    .then(function (depLoads) {
      load.d = depLoads;
    });
  });

  linkPromise.catch(function (err) {
    load.e = null;
    load.er = err;
  });

  // Capital letter = a promise function
  return load = loader[REGISTRY][id] = {
    id: id,
    // importerSetters, the setters functions registered to this dependency
    // we retain this to add more later
    i: importerSetters,
    // module namespace object
    n: ns,

    // instantiate
    I: instantiatePromise,
    // link
    L: linkPromise,
    // whether it has hoisted exports
    h: false,

    // On instantiate completion we have populated:
    // dependency load records
    d: undefined,
    // execution function
    // set to NULL immediately after execution (or on any failure) to indicate execution has happened
    // in such a case, C should be used, and E, I, L will be emptied
    e: undefined,

    // On execution we have populated:
    // the execution error if any
    er: undefined,
    // in the case of TLA, the execution promise
    E: undefined,

    // On execution, L, I, E cleared

    // Promise for top-level completion
    C: undefined
  };
}

function instantiateAll (loader, load, loaded) {
  if (!loaded[load.id]) {
    loaded[load.id] = true;
    // load.L may be undefined for already-instantiated
    return Promise.resolve(load.L)
    .then(function () {
      return Promise.all(load.d.map(function (dep) {
        return instantiateAll(loader, dep, loaded);
      }));
    })
  }
}

function topLevelLoad (loader, load) {
  return load.C = instantiateAll(loader, load, {})
  .then(function () {
    return postOrderExec(loader, load, {});
  })
  .then(function () {
    return load.n;
  });
}

// the closest we can get to call(undefined)
var nullContext = Object.freeze(Object.create(null));

// returns a promise if and only if a top-level await subgraph
// throws on sync errors
function postOrderExec (loader, load, seen) {
  if (seen[load.id])
    return;
  seen[load.id] = true;

  if (!load.e) {
    if (load.er)
      throw load.er;
    if (load.E)
      return load.E;
    return;
  }

  // deps execute first, unless circular
  var depLoadPromises;
  load.d.forEach(function (depLoad) {
    if (!process.env.SYSTEM_PRODUCTION) {
      try {
        var depLoadPromise = postOrderExec(loader, depLoad, seen);
        if (depLoadPromise) {
          depLoadPromise.catch(function (err) {
            triggerOnload(loader, load, err);
          });
          (depLoadPromises = depLoadPromises || []).push(depLoadPromise);
        }
      }
      catch (err) {
        triggerOnload(loader, load, err);
      }
    }
    else {
      var depLoadPromise = postOrderExec(loader, depLoad, seen);
      if (depLoadPromise)
        (depLoadPromises = depLoadPromises || []).push(depLoadPromise);
    }
  });
  if (depLoadPromises)
    return Promise.all(depLoadPromises).then(doExec);

  return doExec();

  function doExec () {
    try {
      var execPromise = load.e.call(nullContext);
      if (execPromise) {
        if (!process.env.SYSTEM_PRODUCTION)
          execPromise = execPromise.then(function () {
            load.C = load.n;
            load.E = null; // indicates completion
            triggerOnload(loader, load, null);
          }, function (err) {
            triggerOnload(loader, load, err);
          });
        else
          execPromise = execPromise.then(function () {
            load.C = load.n;
            load.E = null;
          });
        return load.E = load.E || execPromise;
      }
      // (should be a promise, but a minify optimization to leave out Promise.resolve)
      load.C = load.n;
      if (!process.env.SYSTEM_PRODUCTION) triggerOnload(loader, load, null);
    }
    catch (err) {
      load.er = err;
      if (!process.env.SYSTEM_PRODUCTION) triggerOnload(loader, load, err);
      else throw err;
    }
    finally {
      load.L = load.I = undefined;
      load.e = null;
    }
  }
}

envGlobal.System = new SystemJS();

// CONCATENATED MODULE: ./src/features/import-map.js
/*
 * Import map support for SystemJS
 * 
 * <script type="systemjs-importmap">{}</script>
 * OR
 * <script type="systemjs-importmap" src=package.json></script>
 * 
 * Only those import maps available at the time of SystemJS initialization will be loaded
 * and they will be loaded in DOM order.
 * 
 * There is no support for dynamic import maps injection currently.
 */






var IMPORT_MAP = hasSymbol ? Symbol() : '#';
var IMPORT_MAP_PROMISE = hasSymbol ? Symbol() : '$';

iterateDocumentImportMaps(function (script) {
  script._t = fetch(script.src).then(function (res) {
    return res.text();
  });
}, '[src]');

system_core_systemJSPrototype.prepareImport = function () {
  var loader = this;
  if (!loader[IMPORT_MAP_PROMISE]) {
    loader[IMPORT_MAP] = { imports: {}, scopes: {} };
    loader[IMPORT_MAP_PROMISE] = Promise.resolve();
    iterateDocumentImportMaps(function (script) {
      loader[IMPORT_MAP_PROMISE] = loader[IMPORT_MAP_PROMISE].then(function () {
        return (script._t || script.src && fetch(script.src).then(function (res) { return res.text(); }) || Promise.resolve(script.innerHTML))
        .then(function (text) {
          try {
            return JSON.parse(text);
          } catch (err) {
            throw Error(process.env.SYSTEM_PRODUCTION ? errMsg(1) : errMsg(1, "systemjs-importmap contains invalid JSON"));
          }
        })
        .then(function (newMap) {
          loader[IMPORT_MAP] = resolveAndComposeImportMap(newMap, script.src || baseUrl, loader[IMPORT_MAP]);
        });
      });
    }, '');
  }
  return loader[IMPORT_MAP_PROMISE];
};

system_core_systemJSPrototype.resolve = function (id, parentUrl) {
  parentUrl = parentUrl || !process.env.SYSTEM_BROWSER && this[BASE_URL] || baseUrl;
  return resolveImportMap(this[IMPORT_MAP], resolveIfNotPlainOrUrl(id, parentUrl) || id, parentUrl) || throwUnresolved(id, parentUrl);
};

function throwUnresolved (id, parentUrl) {
  throw Error(errMsg(8, process.env.SYSTEM_PRODUCTION ? [id, parentUrl].join(', ') : "Unable to resolve bare specifier '" + id + (parentUrl ? "' from " + parentUrl : "'")));
}

function iterateDocumentImportMaps(cb, extraSelector) {
  if (hasDocument)
    [].forEach.call(document.querySelectorAll('script[type="systemjs-importmap"]' + extraSelector), cb);
}

// CONCATENATED MODULE: ./src/features/registry.js




var registry_toStringTag = typeof Symbol !== 'undefined' && Symbol.toStringTag;

system_core_systemJSPrototype.get = function (id) {
  var load = this[REGISTRY][id];
  if (load && load.e === null && !load.E) {
    if (load.er)
      return null;
    return load.n;
  }
};

system_core_systemJSPrototype.set = function (id, module) {
  if (!process.env.SYSTEM_PRODUCTION) {
    try {
      // No page-relative URLs allowed
      new URL(id);
    } catch (err) {
      console.warn(Error(errMsg('W3', '"' + id + '" is not a valid URL to set in the module registry')));
    }
  }
  var ns;
  if (registry_toStringTag && module[registry_toStringTag] === 'Module') {
    ns = module;
  }
  else {
    ns = Object.assign(Object.create(null), module);
    if (registry_toStringTag)
      Object.defineProperty(ns, registry_toStringTag, { value: 'Module' });
  }

  var done = Promise.resolve(ns);

  var load = this[REGISTRY][id] || (this[REGISTRY][id] = {
    id: id,
    i: [],
    h: false,
    d: [],
    e: null,
    er: undefined,
    E: undefined
  });

  if (load.e || load.E)
    return false;
  
  Object.assign(load, {
    n: ns,
    I: undefined,
    L: undefined,
    C: done
  });
  return ns;
};

system_core_systemJSPrototype.has = function (id) {
  var load = this[REGISTRY][id];
  return !!load;
};

// Delete function provided for hot-reloading use cases
system_core_systemJSPrototype.delete = function (id) {
  var registry = this[REGISTRY];
  var load = registry[id];
  // in future we can support load.E case by failing load first
  // but that will require TLA callbacks to be implemented
  if (!load || load.e !== null || load.E)
    return false;

  var importerSetters = load.i;
  // remove from importerSetters
  // (release for gc)
  if (load.d)
    load.d.forEach(function (depLoad) {
      var importerIndex = depLoad.i.indexOf(load);
      if (importerIndex !== -1)
        depLoad.i.splice(importerIndex, 1);
    });
  delete registry[id];
  return function () {
    var load = registry[id];
    if (!load || !importerSetters || load.e !== null || load.E)
      return false;
    // add back the old setters
    importerSetters.forEach(function (setter) {
      load.i.push(setter);
      setter(load.n);
    });
    importerSetters = null;
  };
};

var iterator = typeof Symbol !== 'undefined' && Symbol.iterator;

system_core_systemJSPrototype.entries = function () {
  var loader = this, keys = Object.keys(loader[REGISTRY]);
  var index = 0, ns, key;
  var result = {
    next: function () {
      while (
        (key = keys[index++]) !== undefined && 
        (ns = loader.get(key)) === undefined
      );
      return {
        done: key === undefined,
        value: key !== undefined && [key, ns]
      };
    }
  };

  result[iterator] = function() { return this };

  return result;
};

// EXTERNAL MODULE: ./src/extras/global.js
var extras_global = __webpack_require__(821);

// CONCATENATED MODULE: ./src/extras/module-types.js


/*
 * Loads JSON, CSS, Wasm module types based on file extensions
 * Supports application/javascript falling back to JS eval
 */
(function(global) {
  var systemJSPrototype = global.System.constructor.prototype;
  var instantiate = systemJSPrototype.instantiate;

  var moduleTypesRegEx = /\.(css|html|json|wasm)$/;
  systemJSPrototype.shouldFetch = function (url) {
    var path = url.split('?')[0].split('#')[0];
    var ext = path.slice(path.lastIndexOf('.'));
    return ext.match(moduleTypesRegEx);
  }
  systemJSPrototype.fetch = function (url) {
    return fetch(url);
  };

  systemJSPrototype.instantiate = function (url, parent) {
    var loader = this;
    if (this.shouldFetch(url)) {
      return this.fetch(url)
      .then(function (res) {
        if (!res.ok)
          throw Error(errMsg(7, process.env.SYSTEM_PRODUCTION ? [res.status, res.statusText, url, parent].join(', ') : res.status + ' ' + res.statusText + ', loading ' + url + (parent ? ' from ' + parent : '')));
        var contentType = res.headers.get('content-type');
        if (!contentType)
          throw Error(errMsg(4, process.env.SYSTEM_PRODUCTION ? [url, parent] : 'Missing header "Content-Type", loading ' + url + (parent ? ' from ' + parent : '')));
        if (contentType.match(/^(text|application)\/(x-)?javascript(;|$)/)) {
          return res.text().then(function (source) {
            (0, eval)(source);
            return loader.getRegister();
          });
        }
        else if (contentType.match(/^application\/json(;|$)/)) {
          return res.text().then(function (source) {
            return [[], function (_export) {
              return {
                execute: function () {
                  _export('default', JSON.parse(source));
                }
              };
            }];
          });
        }
        else if (contentType.match(/^text\/css(;|$)/)) {
          return res.text().then(function (source) {
            return [[], function (_export) {
              return {
                execute: function () {
                  // Relies on a Constructable Stylesheet polyfill
                  var stylesheet = new CSSStyleSheet();
                  stylesheet.replaceSync(source);
                  _export('default', stylesheet);
                }
              };
            }];
          }); 
        }
        else if (contentType.match(/^application\/wasm(;|$)/)) {
          return (WebAssembly.compileStreaming ? WebAssembly.compileStreaming(res) : res.arrayBuffer().then(WebAssembly.compile))
          .then(function (module) {
            var deps = [];
            var setters = [];
            var importObj = {};
        
            // we can only set imports if supported (eg early Safari doesnt support)
            if (WebAssembly.Module.imports)
              WebAssembly.Module.imports(module).forEach(function (impt) {
                var key = impt.module;
                if (deps.indexOf(key) === -1) {
                  deps.push(key);
                  setters.push(function (m) {
                    importObj[key] = m;
                  });
                }
              });
        
            return [deps, function (_export) {
              return {
                setters: setters,
                execute: function () {
                  return WebAssembly.instantiate(module, importObj)
                  .then(function (instance) {
                    _export(instance.exports);
                  });
                }
              };
            }];
          });
        }
        else {
          throw Error(errMsg(4, process.env.SYSTEM_PRODUCTION ? contentType : 'Unknown module type "' + contentType + '"'));
        }
      });
    }
    return instantiate.apply(this, arguments);
  };
})(typeof self !== 'undefined' ? self : global);

// EXTERNAL MODULE: ./node_modules/source-map-support/source-map-support.js
var source_map_support = __webpack_require__(662);
var source_map_support_default = /*#__PURE__*/__webpack_require__.n(source_map_support);

// EXTERNAL MODULE: ./node_modules/node-fetch/lib/index.js
var lib = __webpack_require__(724);
var lib_default = /*#__PURE__*/__webpack_require__.n(lib);

// EXTERNAL MODULE: external "fs"
var external_fs_ = __webpack_require__(747);

// EXTERNAL MODULE: external "url"
var external_url_ = __webpack_require__(835);

// CONCATENATED MODULE: ./src/features/node-fetch.js





source_map_support_default().install();

global.System.constructor.prototype.shouldFetch = () => true;
global.System.constructor.prototype.fetch = async url => {
  if (url.startsWith('file:')) {
    try {
      const source = await Object(external_fs_.promises.readFile)(Object(external_url_.fileURLToPath)(url.toString()));
      return {
        ok: true,
        status: 200,
        headers: {
          get(headerName) {
            if (headerName === 'content-type') {
              return 'application/javascript';
            } else {
              throw Error(`NodeJS fetch emulation doesn't support ${headerName} header`);
            }
          }
        },
        async text () {
          return source.toString();
        },
        async json () {
          return JSON.parse(source.toString());
        }
      };
    }
    catch (e) {
      if (e.code === 'ENOENT')
        return { status: 404, statusText: e.toString() };
      else
        return { status: 500, statusText: e.toString() };
    }
  } else {
    return lib_default()(url);
  }
};
// CONCATENATED MODULE: ./src/system-node.js
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "System", function() { return System; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "applyImportMap", function() { return applyImportMap; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "setBaseUrl", function() { return setBaseUrl; });








const System = global.System;

const originalResolve = system_core_systemJSPrototype.resolve;
system_core_systemJSPrototype.resolve = function () {
  if (!this[IMPORT_MAP]) {
    // Allow for basic URL resolution before applyImportMap is called
    this[IMPORT_MAP] = { imports: {}, scopes: {} };
  }
  return originalResolve.apply(this, arguments);
};

function applyImportMap(loader, newMap, mapBase) {
  ensureValidSystemLoader(loader);
  loader[IMPORT_MAP] = resolveAndComposeImportMap(newMap, mapBase || baseUrl, loader[IMPORT_MAP] || { imports: {}, scopes: {} });
  loader[IMPORT_MAP_PROMISE] = Promise.resolve();
}

function setBaseUrl(loader, url) {
  ensureValidSystemLoader(loader);
  loader[BASE_URL] = new URL(url).href;
}

function ensureValidSystemLoader (loader) {
  if (!loader[REGISTRY])
    throw new Error('A valid SystemJS instance must be provided');
}


/***/ }),

/***/ 605:
/***/ (function(module) {

module.exports = require("http");

/***/ }),

/***/ 622:
/***/ (function(module) {

module.exports = require("path");

/***/ }),

/***/ 662:
/***/ (function(__unusedmodule, exports, __webpack_require__) {

var SourceMapConsumer = __webpack_require__(94).SourceMapConsumer;
var path = __webpack_require__(622);

var fs;
try {
  fs = __webpack_require__(747);
  if (!fs.existsSync || !fs.readFileSync) {
    // fs doesn't have all methods we need
    fs = null;
  }
} catch (err) {
  /* nop */
}

var bufferFrom = __webpack_require__(501);

// Only install once if called multiple times
var errorFormatterInstalled = false;
var uncaughtShimInstalled = false;

// If true, the caches are reset before a stack trace formatting operation
var emptyCacheBetweenOperations = false;

// Supports {browser, node, auto}
var environment = "auto";

// Maps a file path to a string containing the file contents
var fileContentsCache = {};

// Maps a file path to a source map for that file
var sourceMapCache = {};

// Regex for detecting source maps
var reSourceMap = /^data:application\/json[^,]+base64,/;

// Priority list of retrieve handlers
var retrieveFileHandlers = [];
var retrieveMapHandlers = [];

function isInBrowser() {
  if (environment === "browser")
    return true;
  if (environment === "node")
    return false;
  return ((typeof window !== 'undefined') && (typeof XMLHttpRequest === 'function') && !(window.require && window.module && window.process && window.process.type === "renderer"));
}

function hasGlobalProcessEventEmitter() {
  return ((typeof process === 'object') && (process !== null) && (typeof process.on === 'function'));
}

function handlerExec(list) {
  return function(arg) {
    for (var i = 0; i < list.length; i++) {
      var ret = list[i](arg);
      if (ret) {
        return ret;
      }
    }
    return null;
  };
}

var retrieveFile = handlerExec(retrieveFileHandlers);

retrieveFileHandlers.push(function(path) {
  // Trim the path to make sure there is no extra whitespace.
  path = path.trim();
  if (/^file:/.test(path)) {
    // existsSync/readFileSync can't handle file protocol, but once stripped, it works
    path = path.replace(/file:\/\/\/(\w:)?/, function(protocol, drive) {
      return drive ?
        '' : // file:///C:/dir/file -> C:/dir/file
        '/'; // file:///root-dir/file -> /root-dir/file
    });
  }
  if (path in fileContentsCache) {
    return fileContentsCache[path];
  }

  var contents = '';
  try {
    if (!fs) {
      // Use SJAX if we are in the browser
      var xhr = new XMLHttpRequest();
      xhr.open('GET', path, /** async */ false);
      xhr.send(null);
      if (xhr.readyState === 4 && xhr.status === 200) {
        contents = xhr.responseText;
      }
    } else if (fs.existsSync(path)) {
      // Otherwise, use the filesystem
      contents = fs.readFileSync(path, 'utf8');
    }
  } catch (er) {
    /* ignore any errors */
  }

  return fileContentsCache[path] = contents;
});

// Support URLs relative to a directory, but be careful about a protocol prefix
// in case we are in the browser (i.e. directories may start with "http://" or "file:///")
function supportRelativeURL(file, url) {
  if (!file) return url;
  var dir = path.dirname(file);
  var match = /^\w+:\/\/[^\/]*/.exec(dir);
  var protocol = match ? match[0] : '';
  var startPath = dir.slice(protocol.length);
  if (protocol && /^\/\w\:/.test(startPath)) {
    // handle file:///C:/ paths
    protocol += '/';
    return protocol + path.resolve(dir.slice(protocol.length), url).replace(/\\/g, '/');
  }
  return protocol + path.resolve(dir.slice(protocol.length), url);
}

function retrieveSourceMapURL(source) {
  var fileData;

  if (isInBrowser()) {
     try {
       var xhr = new XMLHttpRequest();
       xhr.open('GET', source, false);
       xhr.send(null);
       fileData = xhr.readyState === 4 ? xhr.responseText : null;

       // Support providing a sourceMappingURL via the SourceMap header
       var sourceMapHeader = xhr.getResponseHeader("SourceMap") ||
                             xhr.getResponseHeader("X-SourceMap");
       if (sourceMapHeader) {
         return sourceMapHeader;
       }
     } catch (e) {
     }
  }

  // Get the URL of the source map
  fileData = retrieveFile(source);
  var re = /(?:\/\/[@#][\s]*sourceMappingURL=([^\s'"]+)[\s]*$)|(?:\/\*[@#][\s]*sourceMappingURL=([^\s*'"]+)[\s]*(?:\*\/)[\s]*$)/mg;
  // Keep executing the search to find the *last* sourceMappingURL to avoid
  // picking up sourceMappingURLs from comments, strings, etc.
  var lastMatch, match;
  while (match = re.exec(fileData)) lastMatch = match;
  if (!lastMatch) return null;
  return lastMatch[1];
};

// Can be overridden by the retrieveSourceMap option to install. Takes a
// generated source filename; returns a {map, optional url} object, or null if
// there is no source map.  The map field may be either a string or the parsed
// JSON object (ie, it must be a valid argument to the SourceMapConsumer
// constructor).
var retrieveSourceMap = handlerExec(retrieveMapHandlers);
retrieveMapHandlers.push(function(source) {
  var sourceMappingURL = retrieveSourceMapURL(source);
  if (!sourceMappingURL) return null;

  // Read the contents of the source map
  var sourceMapData;
  if (reSourceMap.test(sourceMappingURL)) {
    // Support source map URL as a data url
    var rawData = sourceMappingURL.slice(sourceMappingURL.indexOf(',') + 1);
    sourceMapData = bufferFrom(rawData, "base64").toString();
    sourceMappingURL = source;
  } else {
    // Support source map URLs relative to the source URL
    sourceMappingURL = supportRelativeURL(source, sourceMappingURL);
    sourceMapData = retrieveFile(sourceMappingURL);
  }

  if (!sourceMapData) {
    return null;
  }

  return {
    url: sourceMappingURL,
    map: sourceMapData
  };
});

function mapSourcePosition(position) {
  var sourceMap = sourceMapCache[position.source];
  if (!sourceMap) {
    // Call the (overrideable) retrieveSourceMap function to get the source map.
    var urlAndMap = retrieveSourceMap(position.source);
    if (urlAndMap) {
      sourceMap = sourceMapCache[position.source] = {
        url: urlAndMap.url,
        map: new SourceMapConsumer(urlAndMap.map)
      };

      // Load all sources stored inline with the source map into the file cache
      // to pretend like they are already loaded. They may not exist on disk.
      if (sourceMap.map.sourcesContent) {
        sourceMap.map.sources.forEach(function(source, i) {
          var contents = sourceMap.map.sourcesContent[i];
          if (contents) {
            var url = supportRelativeURL(sourceMap.url, source);
            fileContentsCache[url] = contents;
          }
        });
      }
    } else {
      sourceMap = sourceMapCache[position.source] = {
        url: null,
        map: null
      };
    }
  }

  // Resolve the source URL relative to the URL of the source map
  if (sourceMap && sourceMap.map && typeof sourceMap.map.originalPositionFor === 'function') {
    var originalPosition = sourceMap.map.originalPositionFor(position);

    // Only return the original position if a matching line was found. If no
    // matching line is found then we return position instead, which will cause
    // the stack trace to print the path and line for the compiled file. It is
    // better to give a precise location in the compiled file than a vague
    // location in the original file.
    if (originalPosition.source !== null) {
      originalPosition.source = supportRelativeURL(
        sourceMap.url, originalPosition.source);
      return originalPosition;
    }
  }

  return position;
}

// Parses code generated by FormatEvalOrigin(), a function inside V8:
// https://code.google.com/p/v8/source/browse/trunk/src/messages.js
function mapEvalOrigin(origin) {
  // Most eval() calls are in this format
  var match = /^eval at ([^(]+) \((.+):(\d+):(\d+)\)$/.exec(origin);
  if (match) {
    var position = mapSourcePosition({
      source: match[2],
      line: +match[3],
      column: match[4] - 1
    });
    return 'eval at ' + match[1] + ' (' + position.source + ':' +
      position.line + ':' + (position.column + 1) + ')';
  }

  // Parse nested eval() calls using recursion
  match = /^eval at ([^(]+) \((.+)\)$/.exec(origin);
  if (match) {
    return 'eval at ' + match[1] + ' (' + mapEvalOrigin(match[2]) + ')';
  }

  // Make sure we still return useful information if we didn't find anything
  return origin;
}

// This is copied almost verbatim from the V8 source code at
// https://code.google.com/p/v8/source/browse/trunk/src/messages.js. The
// implementation of wrapCallSite() used to just forward to the actual source
// code of CallSite.prototype.toString but unfortunately a new release of V8
// did something to the prototype chain and broke the shim. The only fix I
// could find was copy/paste.
function CallSiteToString() {
  var fileName;
  var fileLocation = "";
  if (this.isNative()) {
    fileLocation = "native";
  } else {
    fileName = this.getScriptNameOrSourceURL();
    if (!fileName && this.isEval()) {
      fileLocation = this.getEvalOrigin();
      fileLocation += ", ";  // Expecting source position to follow.
    }

    if (fileName) {
      fileLocation += fileName;
    } else {
      // Source code does not originate from a file and is not native, but we
      // can still get the source position inside the source string, e.g. in
      // an eval string.
      fileLocation += "<anonymous>";
    }
    var lineNumber = this.getLineNumber();
    if (lineNumber != null) {
      fileLocation += ":" + lineNumber;
      var columnNumber = this.getColumnNumber();
      if (columnNumber) {
        fileLocation += ":" + columnNumber;
      }
    }
  }

  var line = "";
  var functionName = this.getFunctionName();
  var addSuffix = true;
  var isConstructor = this.isConstructor();
  var isMethodCall = !(this.isToplevel() || isConstructor);
  if (isMethodCall) {
    var typeName = this.getTypeName();
    // Fixes shim to be backward compatable with Node v0 to v4
    if (typeName === "[object Object]") {
      typeName = "null";
    }
    var methodName = this.getMethodName();
    if (functionName) {
      if (typeName && functionName.indexOf(typeName) != 0) {
        line += typeName + ".";
      }
      line += functionName;
      if (methodName && functionName.indexOf("." + methodName) != functionName.length - methodName.length - 1) {
        line += " [as " + methodName + "]";
      }
    } else {
      line += typeName + "." + (methodName || "<anonymous>");
    }
  } else if (isConstructor) {
    line += "new " + (functionName || "<anonymous>");
  } else if (functionName) {
    line += functionName;
  } else {
    line += fileLocation;
    addSuffix = false;
  }
  if (addSuffix) {
    line += " (" + fileLocation + ")";
  }
  return line;
}

function cloneCallSite(frame) {
  var object = {};
  Object.getOwnPropertyNames(Object.getPrototypeOf(frame)).forEach(function(name) {
    object[name] = /^(?:is|get)/.test(name) ? function() { return frame[name].call(frame); } : frame[name];
  });
  object.toString = CallSiteToString;
  return object;
}

function wrapCallSite(frame, state) {
  // provides interface backward compatibility
  if (state === undefined) {
    state = { nextPosition: null, curPosition: null }
  }
  if(frame.isNative()) {
    state.curPosition = null;
    return frame;
  }

  // Most call sites will return the source file from getFileName(), but code
  // passed to eval() ending in "//# sourceURL=..." will return the source file
  // from getScriptNameOrSourceURL() instead
  var source = frame.getFileName() || frame.getScriptNameOrSourceURL();
  if (source) {
    var line = frame.getLineNumber();
    var column = frame.getColumnNumber() - 1;

    // Fix position in Node where some (internal) code is prepended.
    // See https://github.com/evanw/node-source-map-support/issues/36
    // Header removed in node at ^10.16 || >=11.11.0
    // v11 is not an LTS candidate, we can just test the one version with it.
    // Test node versions for: 10.16-19, 10.20+, 12-19, 20-99, 100+, or 11.11
    var noHeader = /^v(10\.1[6-9]|10\.[2-9][0-9]|10\.[0-9]{3,}|1[2-9]\d*|[2-9]\d|\d{3,}|11\.11)/;
    var headerLength = noHeader.test(process.version) ? 0 : 62;
    if (line === 1 && column > headerLength && !isInBrowser() && !frame.isEval()) {
      column -= headerLength;
    }

    var position = mapSourcePosition({
      source: source,
      line: line,
      column: column
    });
    state.curPosition = position;
    frame = cloneCallSite(frame);
    var originalFunctionName = frame.getFunctionName;
    frame.getFunctionName = function() {
      if (state.nextPosition == null) {
        return originalFunctionName();
      }
      return state.nextPosition.name || originalFunctionName();
    };
    frame.getFileName = function() { return position.source; };
    frame.getLineNumber = function() { return position.line; };
    frame.getColumnNumber = function() { return position.column + 1; };
    frame.getScriptNameOrSourceURL = function() { return position.source; };
    return frame;
  }

  // Code called using eval() needs special handling
  var origin = frame.isEval() && frame.getEvalOrigin();
  if (origin) {
    origin = mapEvalOrigin(origin);
    frame = cloneCallSite(frame);
    frame.getEvalOrigin = function() { return origin; };
    return frame;
  }

  // If we get here then we were unable to change the source position
  return frame;
}

// This function is part of the V8 stack trace API, for more info see:
// https://v8.dev/docs/stack-trace-api
function prepareStackTrace(error, stack) {
  if (emptyCacheBetweenOperations) {
    fileContentsCache = {};
    sourceMapCache = {};
  }

  var name = error.name || 'Error';
  var message = error.message || '';
  var errorString = name + ": " + message;

  var state = { nextPosition: null, curPosition: null };
  var processedStack = [];
  for (var i = stack.length - 1; i >= 0; i--) {
    processedStack.push('\n    at ' + wrapCallSite(stack[i], state));
    state.nextPosition = state.curPosition;
  }
  state.curPosition = state.nextPosition = null;
  return errorString + processedStack.reverse().join('');
}

// Generate position and snippet of original source with pointer
function getErrorSource(error) {
  var match = /\n    at [^(]+ \((.*):(\d+):(\d+)\)/.exec(error.stack);
  if (match) {
    var source = match[1];
    var line = +match[2];
    var column = +match[3];

    // Support the inline sourceContents inside the source map
    var contents = fileContentsCache[source];

    // Support files on disk
    if (!contents && fs && fs.existsSync(source)) {
      try {
        contents = fs.readFileSync(source, 'utf8');
      } catch (er) {
        contents = '';
      }
    }

    // Format the line from the original source code like node does
    if (contents) {
      var code = contents.split(/(?:\r\n|\r|\n)/)[line - 1];
      if (code) {
        return source + ':' + line + '\n' + code + '\n' +
          new Array(column).join(' ') + '^';
      }
    }
  }
  return null;
}

function printErrorAndExit (error) {
  var source = getErrorSource(error);

  // Ensure error is printed synchronously and not truncated
  if (process.stderr._handle && process.stderr._handle.setBlocking) {
    process.stderr._handle.setBlocking(true);
  }

  if (source) {
    console.error();
    console.error(source);
  }

  console.error(error.stack);
  process.exit(1);
}

function shimEmitUncaughtException () {
  var origEmit = process.emit;

  process.emit = function (type) {
    if (type === 'uncaughtException') {
      var hasStack = (arguments[1] && arguments[1].stack);
      var hasListeners = (this.listeners(type).length > 0);

      if (hasStack && !hasListeners) {
        return printErrorAndExit(arguments[1]);
      }
    }

    return origEmit.apply(this, arguments);
  };
}

var originalRetrieveFileHandlers = retrieveFileHandlers.slice(0);
var originalRetrieveMapHandlers = retrieveMapHandlers.slice(0);

exports.wrapCallSite = wrapCallSite;
exports.getErrorSource = getErrorSource;
exports.mapSourcePosition = mapSourcePosition;
exports.retrieveSourceMap = retrieveSourceMap;

exports.install = function(options) {
  options = options || {};

  if (options.environment) {
    environment = options.environment;
    if (["node", "browser", "auto"].indexOf(environment) === -1) {
      throw new Error("environment " + environment + " was unknown. Available options are {auto, browser, node}")
    }
  }

  // Allow sources to be found by methods other than reading the files
  // directly from disk.
  if (options.retrieveFile) {
    if (options.overrideRetrieveFile) {
      retrieveFileHandlers.length = 0;
    }

    retrieveFileHandlers.unshift(options.retrieveFile);
  }

  // Allow source maps to be found by methods other than reading the files
  // directly from disk.
  if (options.retrieveSourceMap) {
    if (options.overrideRetrieveSourceMap) {
      retrieveMapHandlers.length = 0;
    }

    retrieveMapHandlers.unshift(options.retrieveSourceMap);
  }

  // Support runtime transpilers that include inline source maps
  if (options.hookRequire && !isInBrowser()) {
    var Module;
    try {
      Module = __webpack_require__(282);
    } catch (err) {
      // NOP: Loading in catch block to convert webpack error to warning.
    }
    var $compile = Module.prototype._compile;

    if (!$compile.__sourceMapSupport) {
      Module.prototype._compile = function(content, filename) {
        fileContentsCache[filename] = content;
        sourceMapCache[filename] = undefined;
        return $compile.call(this, content, filename);
      };

      Module.prototype._compile.__sourceMapSupport = true;
    }
  }

  // Configure options
  if (!emptyCacheBetweenOperations) {
    emptyCacheBetweenOperations = 'emptyCacheBetweenOperations' in options ?
      options.emptyCacheBetweenOperations : false;
  }

  // Install the error reformatter
  if (!errorFormatterInstalled) {
    errorFormatterInstalled = true;
    Error.prepareStackTrace = prepareStackTrace;
  }

  if (!uncaughtShimInstalled) {
    var installHandler = 'handleUncaughtExceptions' in options ?
      options.handleUncaughtExceptions : true;

    // Provide the option to not install the uncaught exception handler. This is
    // to support other uncaught exception handlers (in test frameworks, for
    // example). If this handler is not installed and there are no other uncaught
    // exception handlers, uncaught exceptions will be caught by node's built-in
    // exception handler and the process will still be terminated. However, the
    // generated JavaScript code will be shown above the stack trace instead of
    // the original source code.
    if (installHandler && hasGlobalProcessEventEmitter()) {
      uncaughtShimInstalled = true;
      shimEmitUncaughtException();
    }
  }
};

exports.resetRetrieveHandlers = function() {
  retrieveFileHandlers.length = 0;
  retrieveMapHandlers.length = 0;

  retrieveFileHandlers = originalRetrieveFileHandlers.slice(0);
  retrieveMapHandlers = originalRetrieveMapHandlers.slice(0);

  retrieveSourceMap = handlerExec(retrieveMapHandlers);
  retrieveFile = handlerExec(retrieveFileHandlers);
}


/***/ }),

/***/ 724:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, '__esModule', { value: true });

function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }

var Stream = _interopDefault(__webpack_require__(413));
var http = _interopDefault(__webpack_require__(605));
var Url = _interopDefault(__webpack_require__(835));
var https = _interopDefault(__webpack_require__(211));
var zlib = _interopDefault(__webpack_require__(761));

// Based on https://github.com/tmpvar/jsdom/blob/aa85b2abf07766ff7bf5c1f6daafb3726f2f2db5/lib/jsdom/living/blob.js

// fix for "Readable" isn't a named export issue
const Readable = Stream.Readable;

const BUFFER = Symbol('buffer');
const TYPE = Symbol('type');

class Blob {
	constructor() {
		this[TYPE] = '';

		const blobParts = arguments[0];
		const options = arguments[1];

		const buffers = [];
		let size = 0;

		if (blobParts) {
			const a = blobParts;
			const length = Number(a.length);
			for (let i = 0; i < length; i++) {
				const element = a[i];
				let buffer;
				if (element instanceof Buffer) {
					buffer = element;
				} else if (ArrayBuffer.isView(element)) {
					buffer = Buffer.from(element.buffer, element.byteOffset, element.byteLength);
				} else if (element instanceof ArrayBuffer) {
					buffer = Buffer.from(element);
				} else if (element instanceof Blob) {
					buffer = element[BUFFER];
				} else {
					buffer = Buffer.from(typeof element === 'string' ? element : String(element));
				}
				size += buffer.length;
				buffers.push(buffer);
			}
		}

		this[BUFFER] = Buffer.concat(buffers);

		let type = options && options.type !== undefined && String(options.type).toLowerCase();
		if (type && !/[^\u0020-\u007E]/.test(type)) {
			this[TYPE] = type;
		}
	}
	get size() {
		return this[BUFFER].length;
	}
	get type() {
		return this[TYPE];
	}
	text() {
		return Promise.resolve(this[BUFFER].toString());
	}
	arrayBuffer() {
		const buf = this[BUFFER];
		const ab = buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);
		return Promise.resolve(ab);
	}
	stream() {
		const readable = new Readable();
		readable._read = function () {};
		readable.push(this[BUFFER]);
		readable.push(null);
		return readable;
	}
	toString() {
		return '[object Blob]';
	}
	slice() {
		const size = this.size;

		const start = arguments[0];
		const end = arguments[1];
		let relativeStart, relativeEnd;
		if (start === undefined) {
			relativeStart = 0;
		} else if (start < 0) {
			relativeStart = Math.max(size + start, 0);
		} else {
			relativeStart = Math.min(start, size);
		}
		if (end === undefined) {
			relativeEnd = size;
		} else if (end < 0) {
			relativeEnd = Math.max(size + end, 0);
		} else {
			relativeEnd = Math.min(end, size);
		}
		const span = Math.max(relativeEnd - relativeStart, 0);

		const buffer = this[BUFFER];
		const slicedBuffer = buffer.slice(relativeStart, relativeStart + span);
		const blob = new Blob([], { type: arguments[2] });
		blob[BUFFER] = slicedBuffer;
		return blob;
	}
}

Object.defineProperties(Blob.prototype, {
	size: { enumerable: true },
	type: { enumerable: true },
	slice: { enumerable: true }
});

Object.defineProperty(Blob.prototype, Symbol.toStringTag, {
	value: 'Blob',
	writable: false,
	enumerable: false,
	configurable: true
});

/**
 * fetch-error.js
 *
 * FetchError interface for operational errors
 */

/**
 * Create FetchError instance
 *
 * @param   String      message      Error message for human
 * @param   String      type         Error type for machine
 * @param   String      systemError  For Node.js system error
 * @return  FetchError
 */
function FetchError(message, type, systemError) {
  Error.call(this, message);

  this.message = message;
  this.type = type;

  // when err.type is `system`, err.code contains system error code
  if (systemError) {
    this.code = this.errno = systemError.code;
  }

  // hide custom error implementation details from end-users
  Error.captureStackTrace(this, this.constructor);
}

FetchError.prototype = Object.create(Error.prototype);
FetchError.prototype.constructor = FetchError;
FetchError.prototype.name = 'FetchError';

let convert;
try {
	convert = __webpack_require__(18).convert;
} catch (e) {}

const INTERNALS = Symbol('Body internals');

// fix an issue where "PassThrough" isn't a named export for node <10
const PassThrough = Stream.PassThrough;

/**
 * Body mixin
 *
 * Ref: https://fetch.spec.whatwg.org/#body
 *
 * @param   Stream  body  Readable stream
 * @param   Object  opts  Response options
 * @return  Void
 */
function Body(body) {
	var _this = this;

	var _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
	    _ref$size = _ref.size;

	let size = _ref$size === undefined ? 0 : _ref$size;
	var _ref$timeout = _ref.timeout;
	let timeout = _ref$timeout === undefined ? 0 : _ref$timeout;

	if (body == null) {
		// body is undefined or null
		body = null;
	} else if (isURLSearchParams(body)) {
		// body is a URLSearchParams
		body = Buffer.from(body.toString());
	} else if (isBlob(body)) ; else if (Buffer.isBuffer(body)) ; else if (Object.prototype.toString.call(body) === '[object ArrayBuffer]') {
		// body is ArrayBuffer
		body = Buffer.from(body);
	} else if (ArrayBuffer.isView(body)) {
		// body is ArrayBufferView
		body = Buffer.from(body.buffer, body.byteOffset, body.byteLength);
	} else if (body instanceof Stream) ; else {
		// none of the above
		// coerce to string then buffer
		body = Buffer.from(String(body));
	}
	this[INTERNALS] = {
		body,
		disturbed: false,
		error: null
	};
	this.size = size;
	this.timeout = timeout;

	if (body instanceof Stream) {
		body.on('error', function (err) {
			const error = err.name === 'AbortError' ? err : new FetchError(`Invalid response body while trying to fetch ${_this.url}: ${err.message}`, 'system', err);
			_this[INTERNALS].error = error;
		});
	}
}

Body.prototype = {
	get body() {
		return this[INTERNALS].body;
	},

	get bodyUsed() {
		return this[INTERNALS].disturbed;
	},

	/**
  * Decode response as ArrayBuffer
  *
  * @return  Promise
  */
	arrayBuffer() {
		return consumeBody.call(this).then(function (buf) {
			return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);
		});
	},

	/**
  * Return raw response as Blob
  *
  * @return Promise
  */
	blob() {
		let ct = this.headers && this.headers.get('content-type') || '';
		return consumeBody.call(this).then(function (buf) {
			return Object.assign(
			// Prevent copying
			new Blob([], {
				type: ct.toLowerCase()
			}), {
				[BUFFER]: buf
			});
		});
	},

	/**
  * Decode response as json
  *
  * @return  Promise
  */
	json() {
		var _this2 = this;

		return consumeBody.call(this).then(function (buffer) {
			try {
				return JSON.parse(buffer.toString());
			} catch (err) {
				return Body.Promise.reject(new FetchError(`invalid json response body at ${_this2.url} reason: ${err.message}`, 'invalid-json'));
			}
		});
	},

	/**
  * Decode response as text
  *
  * @return  Promise
  */
	text() {
		return consumeBody.call(this).then(function (buffer) {
			return buffer.toString();
		});
	},

	/**
  * Decode response as buffer (non-spec api)
  *
  * @return  Promise
  */
	buffer() {
		return consumeBody.call(this);
	},

	/**
  * Decode response as text, while automatically detecting the encoding and
  * trying to decode to UTF-8 (non-spec api)
  *
  * @return  Promise
  */
	textConverted() {
		var _this3 = this;

		return consumeBody.call(this).then(function (buffer) {
			return convertBody(buffer, _this3.headers);
		});
	}
};

// In browsers, all properties are enumerable.
Object.defineProperties(Body.prototype, {
	body: { enumerable: true },
	bodyUsed: { enumerable: true },
	arrayBuffer: { enumerable: true },
	blob: { enumerable: true },
	json: { enumerable: true },
	text: { enumerable: true }
});

Body.mixIn = function (proto) {
	for (const name of Object.getOwnPropertyNames(Body.prototype)) {
		// istanbul ignore else: future proof
		if (!(name in proto)) {
			const desc = Object.getOwnPropertyDescriptor(Body.prototype, name);
			Object.defineProperty(proto, name, desc);
		}
	}
};

/**
 * Consume and convert an entire Body to a Buffer.
 *
 * Ref: https://fetch.spec.whatwg.org/#concept-body-consume-body
 *
 * @return  Promise
 */
function consumeBody() {
	var _this4 = this;

	if (this[INTERNALS].disturbed) {
		return Body.Promise.reject(new TypeError(`body used already for: ${this.url}`));
	}

	this[INTERNALS].disturbed = true;

	if (this[INTERNALS].error) {
		return Body.Promise.reject(this[INTERNALS].error);
	}

	let body = this.body;

	// body is null
	if (body === null) {
		return Body.Promise.resolve(Buffer.alloc(0));
	}

	// body is blob
	if (isBlob(body)) {
		body = body.stream();
	}

	// body is buffer
	if (Buffer.isBuffer(body)) {
		return Body.Promise.resolve(body);
	}

	// istanbul ignore if: should never happen
	if (!(body instanceof Stream)) {
		return Body.Promise.resolve(Buffer.alloc(0));
	}

	// body is stream
	// get ready to actually consume the body
	let accum = [];
	let accumBytes = 0;
	let abort = false;

	return new Body.Promise(function (resolve, reject) {
		let resTimeout;

		// allow timeout on slow response body
		if (_this4.timeout) {
			resTimeout = setTimeout(function () {
				abort = true;
				reject(new FetchError(`Response timeout while trying to fetch ${_this4.url} (over ${_this4.timeout}ms)`, 'body-timeout'));
			}, _this4.timeout);
		}

		// handle stream errors
		body.on('error', function (err) {
			if (err.name === 'AbortError') {
				// if the request was aborted, reject with this Error
				abort = true;
				reject(err);
			} else {
				// other errors, such as incorrect content-encoding
				reject(new FetchError(`Invalid response body while trying to fetch ${_this4.url}: ${err.message}`, 'system', err));
			}
		});

		body.on('data', function (chunk) {
			if (abort || chunk === null) {
				return;
			}

			if (_this4.size && accumBytes + chunk.length > _this4.size) {
				abort = true;
				reject(new FetchError(`content size at ${_this4.url} over limit: ${_this4.size}`, 'max-size'));
				return;
			}

			accumBytes += chunk.length;
			accum.push(chunk);
		});

		body.on('end', function () {
			if (abort) {
				return;
			}

			clearTimeout(resTimeout);

			try {
				resolve(Buffer.concat(accum, accumBytes));
			} catch (err) {
				// handle streams that have accumulated too much data (issue #414)
				reject(new FetchError(`Could not create Buffer from response body for ${_this4.url}: ${err.message}`, 'system', err));
			}
		});
	});
}

/**
 * Detect buffer encoding and convert to target encoding
 * ref: http://www.w3.org/TR/2011/WD-html5-20110113/parsing.html#determining-the-character-encoding
 *
 * @param   Buffer  buffer    Incoming buffer
 * @param   String  encoding  Target encoding
 * @return  String
 */
function convertBody(buffer, headers) {
	if (typeof convert !== 'function') {
		throw new Error('The package `encoding` must be installed to use the textConverted() function');
	}

	const ct = headers.get('content-type');
	let charset = 'utf-8';
	let res, str;

	// header
	if (ct) {
		res = /charset=([^;]*)/i.exec(ct);
	}

	// no charset in content type, peek at response body for at most 1024 bytes
	str = buffer.slice(0, 1024).toString();

	// html5
	if (!res && str) {
		res = /<meta.+?charset=(['"])(.+?)\1/i.exec(str);
	}

	// html4
	if (!res && str) {
		res = /<meta[\s]+?http-equiv=(['"])content-type\1[\s]+?content=(['"])(.+?)\2/i.exec(str);

		if (res) {
			res = /charset=(.*)/i.exec(res.pop());
		}
	}

	// xml
	if (!res && str) {
		res = /<\?xml.+?encoding=(['"])(.+?)\1/i.exec(str);
	}

	// found charset
	if (res) {
		charset = res.pop();

		// prevent decode issues when sites use incorrect encoding
		// ref: https://hsivonen.fi/encoding-menu/
		if (charset === 'gb2312' || charset === 'gbk') {
			charset = 'gb18030';
		}
	}

	// turn raw buffers into a single utf-8 buffer
	return convert(buffer, 'UTF-8', charset).toString();
}

/**
 * Detect a URLSearchParams object
 * ref: https://github.com/bitinn/node-fetch/issues/296#issuecomment-307598143
 *
 * @param   Object  obj     Object to detect by type or brand
 * @return  String
 */
function isURLSearchParams(obj) {
	// Duck-typing as a necessary condition.
	if (typeof obj !== 'object' || typeof obj.append !== 'function' || typeof obj.delete !== 'function' || typeof obj.get !== 'function' || typeof obj.getAll !== 'function' || typeof obj.has !== 'function' || typeof obj.set !== 'function') {
		return false;
	}

	// Brand-checking and more duck-typing as optional condition.
	return obj.constructor.name === 'URLSearchParams' || Object.prototype.toString.call(obj) === '[object URLSearchParams]' || typeof obj.sort === 'function';
}

/**
 * Check if `obj` is a W3C `Blob` object (which `File` inherits from)
 * @param  {*} obj
 * @return {boolean}
 */
function isBlob(obj) {
	return typeof obj === 'object' && typeof obj.arrayBuffer === 'function' && typeof obj.type === 'string' && typeof obj.stream === 'function' && typeof obj.constructor === 'function' && typeof obj.constructor.name === 'string' && /^(Blob|File)$/.test(obj.constructor.name) && /^(Blob|File)$/.test(obj[Symbol.toStringTag]);
}

/**
 * Clone body given Res/Req instance
 *
 * @param   Mixed  instance  Response or Request instance
 * @return  Mixed
 */
function clone(instance) {
	let p1, p2;
	let body = instance.body;

	// don't allow cloning a used body
	if (instance.bodyUsed) {
		throw new Error('cannot clone body after it is used');
	}

	// check that body is a stream and not form-data object
	// note: we can't clone the form-data object without having it as a dependency
	if (body instanceof Stream && typeof body.getBoundary !== 'function') {
		// tee instance body
		p1 = new PassThrough();
		p2 = new PassThrough();
		body.pipe(p1);
		body.pipe(p2);
		// set instance body to teed body and return the other teed body
		instance[INTERNALS].body = p1;
		body = p2;
	}

	return body;
}

/**
 * Performs the operation "extract a `Content-Type` value from |object|" as
 * specified in the specification:
 * https://fetch.spec.whatwg.org/#concept-bodyinit-extract
 *
 * This function assumes that instance.body is present.
 *
 * @param   Mixed  instance  Any options.body input
 */
function extractContentType(body) {
	if (body === null) {
		// body is null
		return null;
	} else if (typeof body === 'string') {
		// body is string
		return 'text/plain;charset=UTF-8';
	} else if (isURLSearchParams(body)) {
		// body is a URLSearchParams
		return 'application/x-www-form-urlencoded;charset=UTF-8';
	} else if (isBlob(body)) {
		// body is blob
		return body.type || null;
	} else if (Buffer.isBuffer(body)) {
		// body is buffer
		return null;
	} else if (Object.prototype.toString.call(body) === '[object ArrayBuffer]') {
		// body is ArrayBuffer
		return null;
	} else if (ArrayBuffer.isView(body)) {
		// body is ArrayBufferView
		return null;
	} else if (typeof body.getBoundary === 'function') {
		// detect form data input from form-data module
		return `multipart/form-data;boundary=${body.getBoundary()}`;
	} else if (body instanceof Stream) {
		// body is stream
		// can't really do much about this
		return null;
	} else {
		// Body constructor defaults other things to string
		return 'text/plain;charset=UTF-8';
	}
}

/**
 * The Fetch Standard treats this as if "total bytes" is a property on the body.
 * For us, we have to explicitly get it with a function.
 *
 * ref: https://fetch.spec.whatwg.org/#concept-body-total-bytes
 *
 * @param   Body    instance   Instance of Body
 * @return  Number?            Number of bytes, or null if not possible
 */
function getTotalBytes(instance) {
	const body = instance.body;


	if (body === null) {
		// body is null
		return 0;
	} else if (isBlob(body)) {
		return body.size;
	} else if (Buffer.isBuffer(body)) {
		// body is buffer
		return body.length;
	} else if (body && typeof body.getLengthSync === 'function') {
		// detect form data input from form-data module
		if (body._lengthRetrievers && body._lengthRetrievers.length == 0 || // 1.x
		body.hasKnownLength && body.hasKnownLength()) {
			// 2.x
			return body.getLengthSync();
		}
		return null;
	} else {
		// body is stream
		return null;
	}
}

/**
 * Write a Body to a Node.js WritableStream (e.g. http.Request) object.
 *
 * @param   Body    instance   Instance of Body
 * @return  Void
 */
function writeToStream(dest, instance) {
	const body = instance.body;


	if (body === null) {
		// body is null
		dest.end();
	} else if (isBlob(body)) {
		body.stream().pipe(dest);
	} else if (Buffer.isBuffer(body)) {
		// body is buffer
		dest.write(body);
		dest.end();
	} else {
		// body is stream
		body.pipe(dest);
	}
}

// expose Promise
Body.Promise = global.Promise;

/**
 * headers.js
 *
 * Headers class offers convenient helpers
 */

const invalidTokenRegex = /[^\^_`a-zA-Z\-0-9!#$%&'*+.|~]/;
const invalidHeaderCharRegex = /[^\t\x20-\x7e\x80-\xff]/;

function validateName(name) {
	name = `${name}`;
	if (invalidTokenRegex.test(name) || name === '') {
		throw new TypeError(`${name} is not a legal HTTP header name`);
	}
}

function validateValue(value) {
	value = `${value}`;
	if (invalidHeaderCharRegex.test(value)) {
		throw new TypeError(`${value} is not a legal HTTP header value`);
	}
}

/**
 * Find the key in the map object given a header name.
 *
 * Returns undefined if not found.
 *
 * @param   String  name  Header name
 * @return  String|Undefined
 */
function find(map, name) {
	name = name.toLowerCase();
	for (const key in map) {
		if (key.toLowerCase() === name) {
			return key;
		}
	}
	return undefined;
}

const MAP = Symbol('map');
class Headers {
	/**
  * Headers class
  *
  * @param   Object  headers  Response headers
  * @return  Void
  */
	constructor() {
		let init = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : undefined;

		this[MAP] = Object.create(null);

		if (init instanceof Headers) {
			const rawHeaders = init.raw();
			const headerNames = Object.keys(rawHeaders);

			for (const headerName of headerNames) {
				for (const value of rawHeaders[headerName]) {
					this.append(headerName, value);
				}
			}

			return;
		}

		// We don't worry about converting prop to ByteString here as append()
		// will handle it.
		if (init == null) ; else if (typeof init === 'object') {
			const method = init[Symbol.iterator];
			if (method != null) {
				if (typeof method !== 'function') {
					throw new TypeError('Header pairs must be iterable');
				}

				// sequence<sequence<ByteString>>
				// Note: per spec we have to first exhaust the lists then process them
				const pairs = [];
				for (const pair of init) {
					if (typeof pair !== 'object' || typeof pair[Symbol.iterator] !== 'function') {
						throw new TypeError('Each header pair must be iterable');
					}
					pairs.push(Array.from(pair));
				}

				for (const pair of pairs) {
					if (pair.length !== 2) {
						throw new TypeError('Each header pair must be a name/value tuple');
					}
					this.append(pair[0], pair[1]);
				}
			} else {
				// record<ByteString, ByteString>
				for (const key of Object.keys(init)) {
					const value = init[key];
					this.append(key, value);
				}
			}
		} else {
			throw new TypeError('Provided initializer must be an object');
		}
	}

	/**
  * Return combined header value given name
  *
  * @param   String  name  Header name
  * @return  Mixed
  */
	get(name) {
		name = `${name}`;
		validateName(name);
		const key = find(this[MAP], name);
		if (key === undefined) {
			return null;
		}

		return this[MAP][key].join(', ');
	}

	/**
  * Iterate over all headers
  *
  * @param   Function  callback  Executed for each item with parameters (value, name, thisArg)
  * @param   Boolean   thisArg   `this` context for callback function
  * @return  Void
  */
	forEach(callback) {
		let thisArg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : undefined;

		let pairs = getHeaders(this);
		let i = 0;
		while (i < pairs.length) {
			var _pairs$i = pairs[i];
			const name = _pairs$i[0],
			      value = _pairs$i[1];

			callback.call(thisArg, value, name, this);
			pairs = getHeaders(this);
			i++;
		}
	}

	/**
  * Overwrite header values given name
  *
  * @param   String  name   Header name
  * @param   String  value  Header value
  * @return  Void
  */
	set(name, value) {
		name = `${name}`;
		value = `${value}`;
		validateName(name);
		validateValue(value);
		const key = find(this[MAP], name);
		this[MAP][key !== undefined ? key : name] = [value];
	}

	/**
  * Append a value onto existing header
  *
  * @param   String  name   Header name
  * @param   String  value  Header value
  * @return  Void
  */
	append(name, value) {
		name = `${name}`;
		value = `${value}`;
		validateName(name);
		validateValue(value);
		const key = find(this[MAP], name);
		if (key !== undefined) {
			this[MAP][key].push(value);
		} else {
			this[MAP][name] = [value];
		}
	}

	/**
  * Check for header name existence
  *
  * @param   String   name  Header name
  * @return  Boolean
  */
	has(name) {
		name = `${name}`;
		validateName(name);
		return find(this[MAP], name) !== undefined;
	}

	/**
  * Delete all header values given name
  *
  * @param   String  name  Header name
  * @return  Void
  */
	delete(name) {
		name = `${name}`;
		validateName(name);
		const key = find(this[MAP], name);
		if (key !== undefined) {
			delete this[MAP][key];
		}
	}

	/**
  * Return raw headers (non-spec api)
  *
  * @return  Object
  */
	raw() {
		return this[MAP];
	}

	/**
  * Get an iterator on keys.
  *
  * @return  Iterator
  */
	keys() {
		return createHeadersIterator(this, 'key');
	}

	/**
  * Get an iterator on values.
  *
  * @return  Iterator
  */
	values() {
		return createHeadersIterator(this, 'value');
	}

	/**
  * Get an iterator on entries.
  *
  * This is the default iterator of the Headers object.
  *
  * @return  Iterator
  */
	[Symbol.iterator]() {
		return createHeadersIterator(this, 'key+value');
	}
}
Headers.prototype.entries = Headers.prototype[Symbol.iterator];

Object.defineProperty(Headers.prototype, Symbol.toStringTag, {
	value: 'Headers',
	writable: false,
	enumerable: false,
	configurable: true
});

Object.defineProperties(Headers.prototype, {
	get: { enumerable: true },
	forEach: { enumerable: true },
	set: { enumerable: true },
	append: { enumerable: true },
	has: { enumerable: true },
	delete: { enumerable: true },
	keys: { enumerable: true },
	values: { enumerable: true },
	entries: { enumerable: true }
});

function getHeaders(headers) {
	let kind = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'key+value';

	const keys = Object.keys(headers[MAP]).sort();
	return keys.map(kind === 'key' ? function (k) {
		return k.toLowerCase();
	} : kind === 'value' ? function (k) {
		return headers[MAP][k].join(', ');
	} : function (k) {
		return [k.toLowerCase(), headers[MAP][k].join(', ')];
	});
}

const INTERNAL = Symbol('internal');

function createHeadersIterator(target, kind) {
	const iterator = Object.create(HeadersIteratorPrototype);
	iterator[INTERNAL] = {
		target,
		kind,
		index: 0
	};
	return iterator;
}

const HeadersIteratorPrototype = Object.setPrototypeOf({
	next() {
		// istanbul ignore if
		if (!this || Object.getPrototypeOf(this) !== HeadersIteratorPrototype) {
			throw new TypeError('Value of `this` is not a HeadersIterator');
		}

		var _INTERNAL = this[INTERNAL];
		const target = _INTERNAL.target,
		      kind = _INTERNAL.kind,
		      index = _INTERNAL.index;

		const values = getHeaders(target, kind);
		const len = values.length;
		if (index >= len) {
			return {
				value: undefined,
				done: true
			};
		}

		this[INTERNAL].index = index + 1;

		return {
			value: values[index],
			done: false
		};
	}
}, Object.getPrototypeOf(Object.getPrototypeOf([][Symbol.iterator]())));

Object.defineProperty(HeadersIteratorPrototype, Symbol.toStringTag, {
	value: 'HeadersIterator',
	writable: false,
	enumerable: false,
	configurable: true
});

/**
 * Export the Headers object in a form that Node.js can consume.
 *
 * @param   Headers  headers
 * @return  Object
 */
function exportNodeCompatibleHeaders(headers) {
	const obj = Object.assign({ __proto__: null }, headers[MAP]);

	// http.request() only supports string as Host header. This hack makes
	// specifying custom Host header possible.
	const hostHeaderKey = find(headers[MAP], 'Host');
	if (hostHeaderKey !== undefined) {
		obj[hostHeaderKey] = obj[hostHeaderKey][0];
	}

	return obj;
}

/**
 * Create a Headers object from an object of headers, ignoring those that do
 * not conform to HTTP grammar productions.
 *
 * @param   Object  obj  Object of headers
 * @return  Headers
 */
function createHeadersLenient(obj) {
	const headers = new Headers();
	for (const name of Object.keys(obj)) {
		if (invalidTokenRegex.test(name)) {
			continue;
		}
		if (Array.isArray(obj[name])) {
			for (const val of obj[name]) {
				if (invalidHeaderCharRegex.test(val)) {
					continue;
				}
				if (headers[MAP][name] === undefined) {
					headers[MAP][name] = [val];
				} else {
					headers[MAP][name].push(val);
				}
			}
		} else if (!invalidHeaderCharRegex.test(obj[name])) {
			headers[MAP][name] = [obj[name]];
		}
	}
	return headers;
}

const INTERNALS$1 = Symbol('Response internals');

// fix an issue where "STATUS_CODES" aren't a named export for node <10
const STATUS_CODES = http.STATUS_CODES;

/**
 * Response class
 *
 * @param   Stream  body  Readable stream
 * @param   Object  opts  Response options
 * @return  Void
 */
class Response {
	constructor() {
		let body = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
		let opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

		Body.call(this, body, opts);

		const status = opts.status || 200;
		const headers = new Headers(opts.headers);

		if (body != null && !headers.has('Content-Type')) {
			const contentType = extractContentType(body);
			if (contentType) {
				headers.append('Content-Type', contentType);
			}
		}

		this[INTERNALS$1] = {
			url: opts.url,
			status,
			statusText: opts.statusText || STATUS_CODES[status],
			headers,
			counter: opts.counter
		};
	}

	get url() {
		return this[INTERNALS$1].url || '';
	}

	get status() {
		return this[INTERNALS$1].status;
	}

	/**
  * Convenience property representing if the request ended normally
  */
	get ok() {
		return this[INTERNALS$1].status >= 200 && this[INTERNALS$1].status < 300;
	}

	get redirected() {
		return this[INTERNALS$1].counter > 0;
	}

	get statusText() {
		return this[INTERNALS$1].statusText;
	}

	get headers() {
		return this[INTERNALS$1].headers;
	}

	/**
  * Clone this response
  *
  * @return  Response
  */
	clone() {
		return new Response(clone(this), {
			url: this.url,
			status: this.status,
			statusText: this.statusText,
			headers: this.headers,
			ok: this.ok,
			redirected: this.redirected
		});
	}
}

Body.mixIn(Response.prototype);

Object.defineProperties(Response.prototype, {
	url: { enumerable: true },
	status: { enumerable: true },
	ok: { enumerable: true },
	redirected: { enumerable: true },
	statusText: { enumerable: true },
	headers: { enumerable: true },
	clone: { enumerable: true }
});

Object.defineProperty(Response.prototype, Symbol.toStringTag, {
	value: 'Response',
	writable: false,
	enumerable: false,
	configurable: true
});

const INTERNALS$2 = Symbol('Request internals');

// fix an issue where "format", "parse" aren't a named export for node <10
const parse_url = Url.parse;
const format_url = Url.format;

const streamDestructionSupported = 'destroy' in Stream.Readable.prototype;

/**
 * Check if a value is an instance of Request.
 *
 * @param   Mixed   input
 * @return  Boolean
 */
function isRequest(input) {
	return typeof input === 'object' && typeof input[INTERNALS$2] === 'object';
}

function isAbortSignal(signal) {
	const proto = signal && typeof signal === 'object' && Object.getPrototypeOf(signal);
	return !!(proto && proto.constructor.name === 'AbortSignal');
}

/**
 * Request class
 *
 * @param   Mixed   input  Url or Request instance
 * @param   Object  init   Custom options
 * @return  Void
 */
class Request {
	constructor(input) {
		let init = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

		let parsedURL;

		// normalize input
		if (!isRequest(input)) {
			if (input && input.href) {
				// in order to support Node.js' Url objects; though WHATWG's URL objects
				// will fall into this branch also (since their `toString()` will return
				// `href` property anyway)
				parsedURL = parse_url(input.href);
			} else {
				// coerce input to a string before attempting to parse
				parsedURL = parse_url(`${input}`);
			}
			input = {};
		} else {
			parsedURL = parse_url(input.url);
		}

		let method = init.method || input.method || 'GET';
		method = method.toUpperCase();

		if ((init.body != null || isRequest(input) && input.body !== null) && (method === 'GET' || method === 'HEAD')) {
			throw new TypeError('Request with GET/HEAD method cannot have body');
		}

		let inputBody = init.body != null ? init.body : isRequest(input) && input.body !== null ? clone(input) : null;

		Body.call(this, inputBody, {
			timeout: init.timeout || input.timeout || 0,
			size: init.size || input.size || 0
		});

		const headers = new Headers(init.headers || input.headers || {});

		if (inputBody != null && !headers.has('Content-Type')) {
			const contentType = extractContentType(inputBody);
			if (contentType) {
				headers.append('Content-Type', contentType);
			}
		}

		let signal = isRequest(input) ? input.signal : null;
		if ('signal' in init) signal = init.signal;

		if (signal != null && !isAbortSignal(signal)) {
			throw new TypeError('Expected signal to be an instanceof AbortSignal');
		}

		this[INTERNALS$2] = {
			method,
			redirect: init.redirect || input.redirect || 'follow',
			headers,
			parsedURL,
			signal
		};

		// node-fetch-only options
		this.follow = init.follow !== undefined ? init.follow : input.follow !== undefined ? input.follow : 20;
		this.compress = init.compress !== undefined ? init.compress : input.compress !== undefined ? input.compress : true;
		this.counter = init.counter || input.counter || 0;
		this.agent = init.agent || input.agent;
	}

	get method() {
		return this[INTERNALS$2].method;
	}

	get url() {
		return format_url(this[INTERNALS$2].parsedURL);
	}

	get headers() {
		return this[INTERNALS$2].headers;
	}

	get redirect() {
		return this[INTERNALS$2].redirect;
	}

	get signal() {
		return this[INTERNALS$2].signal;
	}

	/**
  * Clone this request
  *
  * @return  Request
  */
	clone() {
		return new Request(this);
	}
}

Body.mixIn(Request.prototype);

Object.defineProperty(Request.prototype, Symbol.toStringTag, {
	value: 'Request',
	writable: false,
	enumerable: false,
	configurable: true
});

Object.defineProperties(Request.prototype, {
	method: { enumerable: true },
	url: { enumerable: true },
	headers: { enumerable: true },
	redirect: { enumerable: true },
	clone: { enumerable: true },
	signal: { enumerable: true }
});

/**
 * Convert a Request to Node.js http request options.
 *
 * @param   Request  A Request instance
 * @return  Object   The options object to be passed to http.request
 */
function getNodeRequestOptions(request) {
	const parsedURL = request[INTERNALS$2].parsedURL;
	const headers = new Headers(request[INTERNALS$2].headers);

	// fetch step 1.3
	if (!headers.has('Accept')) {
		headers.set('Accept', '*/*');
	}

	// Basic fetch
	if (!parsedURL.protocol || !parsedURL.hostname) {
		throw new TypeError('Only absolute URLs are supported');
	}

	if (!/^https?:$/.test(parsedURL.protocol)) {
		throw new TypeError('Only HTTP(S) protocols are supported');
	}

	if (request.signal && request.body instanceof Stream.Readable && !streamDestructionSupported) {
		throw new Error('Cancellation of streamed requests with AbortSignal is not supported in node < 8');
	}

	// HTTP-network-or-cache fetch steps 2.4-2.7
	let contentLengthValue = null;
	if (request.body == null && /^(POST|PUT)$/i.test(request.method)) {
		contentLengthValue = '0';
	}
	if (request.body != null) {
		const totalBytes = getTotalBytes(request);
		if (typeof totalBytes === 'number') {
			contentLengthValue = String(totalBytes);
		}
	}
	if (contentLengthValue) {
		headers.set('Content-Length', contentLengthValue);
	}

	// HTTP-network-or-cache fetch step 2.11
	if (!headers.has('User-Agent')) {
		headers.set('User-Agent', 'node-fetch/1.0 (+https://github.com/bitinn/node-fetch)');
	}

	// HTTP-network-or-cache fetch step 2.15
	if (request.compress && !headers.has('Accept-Encoding')) {
		headers.set('Accept-Encoding', 'gzip,deflate');
	}

	let agent = request.agent;
	if (typeof agent === 'function') {
		agent = agent(parsedURL);
	}

	if (!headers.has('Connection') && !agent) {
		headers.set('Connection', 'close');
	}

	// HTTP-network fetch step 4.2
	// chunked encoding is handled by Node.js

	return Object.assign({}, parsedURL, {
		method: request.method,
		headers: exportNodeCompatibleHeaders(headers),
		agent
	});
}

/**
 * abort-error.js
 *
 * AbortError interface for cancelled requests
 */

/**
 * Create AbortError instance
 *
 * @param   String      message      Error message for human
 * @return  AbortError
 */
function AbortError(message) {
  Error.call(this, message);

  this.type = 'aborted';
  this.message = message;

  // hide custom error implementation details from end-users
  Error.captureStackTrace(this, this.constructor);
}

AbortError.prototype = Object.create(Error.prototype);
AbortError.prototype.constructor = AbortError;
AbortError.prototype.name = 'AbortError';

// fix an issue where "PassThrough", "resolve" aren't a named export for node <10
const PassThrough$1 = Stream.PassThrough;
const resolve_url = Url.resolve;

/**
 * Fetch function
 *
 * @param   Mixed    url   Absolute url or Request instance
 * @param   Object   opts  Fetch options
 * @return  Promise
 */
function fetch(url, opts) {

	// allow custom promise
	if (!fetch.Promise) {
		throw new Error('native promise missing, set fetch.Promise to your favorite alternative');
	}

	Body.Promise = fetch.Promise;

	// wrap http.request into fetch
	return new fetch.Promise(function (resolve, reject) {
		// build request object
		const request = new Request(url, opts);
		const options = getNodeRequestOptions(request);

		const send = (options.protocol === 'https:' ? https : http).request;
		const signal = request.signal;

		let response = null;

		const abort = function abort() {
			let error = new AbortError('The user aborted a request.');
			reject(error);
			if (request.body && request.body instanceof Stream.Readable) {
				request.body.destroy(error);
			}
			if (!response || !response.body) return;
			response.body.emit('error', error);
		};

		if (signal && signal.aborted) {
			abort();
			return;
		}

		const abortAndFinalize = function abortAndFinalize() {
			abort();
			finalize();
		};

		// send request
		const req = send(options);
		let reqTimeout;

		if (signal) {
			signal.addEventListener('abort', abortAndFinalize);
		}

		function finalize() {
			req.abort();
			if (signal) signal.removeEventListener('abort', abortAndFinalize);
			clearTimeout(reqTimeout);
		}

		if (request.timeout) {
			req.once('socket', function (socket) {
				reqTimeout = setTimeout(function () {
					reject(new FetchError(`network timeout at: ${request.url}`, 'request-timeout'));
					finalize();
				}, request.timeout);
			});
		}

		req.on('error', function (err) {
			reject(new FetchError(`request to ${request.url} failed, reason: ${err.message}`, 'system', err));
			finalize();
		});

		req.on('response', function (res) {
			clearTimeout(reqTimeout);

			const headers = createHeadersLenient(res.headers);

			// HTTP fetch step 5
			if (fetch.isRedirect(res.statusCode)) {
				// HTTP fetch step 5.2
				const location = headers.get('Location');

				// HTTP fetch step 5.3
				const locationURL = location === null ? null : resolve_url(request.url, location);

				// HTTP fetch step 5.5
				switch (request.redirect) {
					case 'error':
						reject(new FetchError(`redirect mode is set to error: ${request.url}`, 'no-redirect'));
						finalize();
						return;
					case 'manual':
						// node-fetch-specific step: make manual redirect a bit easier to use by setting the Location header value to the resolved URL.
						if (locationURL !== null) {
							// handle corrupted header
							try {
								headers.set('Location', locationURL);
							} catch (err) {
								// istanbul ignore next: nodejs server prevent invalid response headers, we can't test this through normal request
								reject(err);
							}
						}
						break;
					case 'follow':
						// HTTP-redirect fetch step 2
						if (locationURL === null) {
							break;
						}

						// HTTP-redirect fetch step 5
						if (request.counter >= request.follow) {
							reject(new FetchError(`maximum redirect reached at: ${request.url}`, 'max-redirect'));
							finalize();
							return;
						}

						// HTTP-redirect fetch step 6 (counter increment)
						// Create a new Request object.
						const requestOpts = {
							headers: new Headers(request.headers),
							follow: request.follow,
							counter: request.counter + 1,
							agent: request.agent,
							compress: request.compress,
							method: request.method,
							body: request.body,
							signal: request.signal,
							timeout: request.timeout
						};

						// HTTP-redirect fetch step 9
						if (res.statusCode !== 303 && request.body && getTotalBytes(request) === null) {
							reject(new FetchError('Cannot follow redirect with body being a readable stream', 'unsupported-redirect'));
							finalize();
							return;
						}

						// HTTP-redirect fetch step 11
						if (res.statusCode === 303 || (res.statusCode === 301 || res.statusCode === 302) && request.method === 'POST') {
							requestOpts.method = 'GET';
							requestOpts.body = undefined;
							requestOpts.headers.delete('content-length');
						}

						// HTTP-redirect fetch step 15
						resolve(fetch(new Request(locationURL, requestOpts)));
						finalize();
						return;
				}
			}

			// prepare response
			res.once('end', function () {
				if (signal) signal.removeEventListener('abort', abortAndFinalize);
			});
			let body = res.pipe(new PassThrough$1());

			const response_options = {
				url: request.url,
				status: res.statusCode,
				statusText: res.statusMessage,
				headers: headers,
				size: request.size,
				timeout: request.timeout,
				counter: request.counter
			};

			// HTTP-network fetch step 12.1.1.3
			const codings = headers.get('Content-Encoding');

			// HTTP-network fetch step 12.1.1.4: handle content codings

			// in following scenarios we ignore compression support
			// 1. compression support is disabled
			// 2. HEAD request
			// 3. no Content-Encoding header
			// 4. no content response (204)
			// 5. content not modified response (304)
			if (!request.compress || request.method === 'HEAD' || codings === null || res.statusCode === 204 || res.statusCode === 304) {
				response = new Response(body, response_options);
				resolve(response);
				return;
			}

			// For Node v6+
			// Be less strict when decoding compressed responses, since sometimes
			// servers send slightly invalid responses that are still accepted
			// by common browsers.
			// Always using Z_SYNC_FLUSH is what cURL does.
			const zlibOptions = {
				flush: zlib.Z_SYNC_FLUSH,
				finishFlush: zlib.Z_SYNC_FLUSH
			};

			// for gzip
			if (codings == 'gzip' || codings == 'x-gzip') {
				body = body.pipe(zlib.createGunzip(zlibOptions));
				response = new Response(body, response_options);
				resolve(response);
				return;
			}

			// for deflate
			if (codings == 'deflate' || codings == 'x-deflate') {
				// handle the infamous raw deflate response from old servers
				// a hack for old IIS and Apache servers
				const raw = res.pipe(new PassThrough$1());
				raw.once('data', function (chunk) {
					// see http://stackoverflow.com/questions/37519828
					if ((chunk[0] & 0x0F) === 0x08) {
						body = body.pipe(zlib.createInflate());
					} else {
						body = body.pipe(zlib.createInflateRaw());
					}
					response = new Response(body, response_options);
					resolve(response);
				});
				return;
			}

			// for br
			if (codings == 'br' && typeof zlib.createBrotliDecompress === 'function') {
				body = body.pipe(zlib.createBrotliDecompress());
				response = new Response(body, response_options);
				resolve(response);
				return;
			}

			// otherwise, use response as-is
			response = new Response(body, response_options);
			resolve(response);
		});

		writeToStream(req, request);
	});
}
/**
 * Redirect code matching
 *
 * @param   Number   code  Status code
 * @return  Boolean
 */
fetch.isRedirect = function (code) {
	return code === 301 || code === 302 || code === 303 || code === 307 || code === 308;
};

// expose Promise
fetch.Promise = global.Promise;

module.exports = exports = fetch;
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = exports;
exports.Headers = Headers;
exports.Request = Request;
exports.Response = Response;
exports.FetchError = FetchError;


/***/ }),

/***/ 747:
/***/ (function(module) {

module.exports = require("fs");

/***/ }),

/***/ 761:
/***/ (function(module) {

module.exports = require("zlib");

/***/ }),

/***/ 821:
/***/ (function() {

/*
 * SystemJS global script loading support
 * Extra for the s.js build only
 * (Included by default in system.js build)
 */
(function (global) {
  var systemJSPrototype = System.constructor.prototype;

  // safari unpredictably lists some new globals first or second in object order
  var firstGlobalProp, secondGlobalProp, lastGlobalProp;
  function getGlobalProp () {
    var cnt = 0;
    var lastProp;
    for (var p in global) {
      // do not check frames cause it could be removed during import
      if (shouldSkipProperty(p))
        continue;
      if (cnt === 0 && p !== firstGlobalProp || cnt === 1 && p !== secondGlobalProp)
        return p;
      cnt++;
      lastProp = p;
    }
    if (lastProp !== lastGlobalProp)
      return lastProp;
  }

  function noteGlobalProps () {
    // alternatively Object.keys(global).pop()
    // but this may be faster (pending benchmarks)
    firstGlobalProp = secondGlobalProp = undefined;
    for (var p in global) {
      // do not check frames cause it could be removed during import
      if (shouldSkipProperty(p))
        continue;
      if (!firstGlobalProp)
        firstGlobalProp = p;
      else if (!secondGlobalProp)
        secondGlobalProp = p;
      lastGlobalProp = p;
    }
    return lastGlobalProp;
  }

  var impt = systemJSPrototype.import;
  systemJSPrototype.import = function (id, parentUrl) {
    noteGlobalProps();
    return impt.call(this, id, parentUrl);
  };

  var emptyInstantiation = [[], function () { return {} }];

  var getRegister = systemJSPrototype.getRegister;
  systemJSPrototype.getRegister = function () {
    var lastRegister = getRegister.call(this);
    if (lastRegister)
      return lastRegister;

    // no registration -> attempt a global detection as difference from snapshot
    // when multiple globals, we take the global value to be the last defined new global object property
    // for performance, this will not support multi-version / global collisions as previous SystemJS versions did
    // note in Edge, deleting and re-adding a global does not change its ordering
    var globalProp = getGlobalProp();
    if (!globalProp)
      return emptyInstantiation;

    var globalExport;
    try {
      globalExport = global[globalProp];
    }
    catch (e) {
      return emptyInstantiation;
    }

    return [[], function (_export) {
      return {
        execute: function () {
          _export({ default: globalExport, __useDefault: true });
        }
      };
    }];
  };

  var isIE11 = typeof navigator !== 'undefined' && navigator.userAgent.indexOf('Trident') !== -1;

  function shouldSkipProperty(p) {
    return !global.hasOwnProperty(p)
      || !isNaN(p) && p < global.length
      || isIE11 && global[p] && typeof window !== 'undefined' && global[p].parent === window;
  }
})(typeof self !== 'undefined' ? self : global);


/***/ }),

/***/ 835:
/***/ (function(module) {

module.exports = require("url");

/***/ }),

/***/ 947:
/***/ (function(__unusedmodule, exports) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');

/**
 * Encode an integer in the range of 0 to 63 to a single base 64 digit.
 */
exports.encode = function (number) {
  if (0 <= number && number < intToCharMap.length) {
    return intToCharMap[number];
  }
  throw new TypeError("Must be between 0 and 63: " + number);
};

/**
 * Decode a single base 64 character code digit to an integer. Returns -1 on
 * failure.
 */
exports.decode = function (charCode) {
  var bigA = 65;     // 'A'
  var bigZ = 90;     // 'Z'

  var littleA = 97;  // 'a'
  var littleZ = 122; // 'z'

  var zero = 48;     // '0'
  var nine = 57;     // '9'

  var plus = 43;     // '+'
  var slash = 47;    // '/'

  var littleOffset = 26;
  var numberOffset = 52;

  // 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ
  if (bigA <= charCode && charCode <= bigZ) {
    return (charCode - bigA);
  }

  // 26 - 51: abcdefghijklmnopqrstuvwxyz
  if (littleA <= charCode && charCode <= littleZ) {
    return (charCode - littleA + littleOffset);
  }

  // 52 - 61: 0123456789
  if (zero <= charCode && charCode <= nine) {
    return (charCode - zero + numberOffset);
  }

  // 62: +
  if (charCode == plus) {
    return 62;
  }

  // 63: /
  if (charCode == slash) {
    return 63;
  }

  // Invalid base64 digit.
  return -1;
};


/***/ }),

/***/ 969:
/***/ (function(__unusedmodule, exports, __webpack_require__) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = __webpack_require__(338);
var has = Object.prototype.hasOwnProperty;
var hasNativeMap = typeof Map !== "undefined";

/**
 * A data structure which is a combination of an array and a set. Adding a new
 * member is O(1), testing for membership is O(1), and finding the index of an
 * element is O(1). Removing elements from the set is not supported. Only
 * strings are supported for membership.
 */
function ArraySet() {
  this._array = [];
  this._set = hasNativeMap ? new Map() : Object.create(null);
}

/**
 * Static method for creating ArraySet instances from an existing array.
 */
ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
  var set = new ArraySet();
  for (var i = 0, len = aArray.length; i < len; i++) {
    set.add(aArray[i], aAllowDuplicates);
  }
  return set;
};

/**
 * Return how many unique items are in this ArraySet. If duplicates have been
 * added, than those do not count towards the size.
 *
 * @returns Number
 */
ArraySet.prototype.size = function ArraySet_size() {
  return hasNativeMap ? this._set.size : Object.getOwnPropertyNames(this._set).length;
};

/**
 * Add the given string to this set.
 *
 * @param String aStr
 */
ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
  var sStr = hasNativeMap ? aStr : util.toSetString(aStr);
  var isDuplicate = hasNativeMap ? this.has(aStr) : has.call(this._set, sStr);
  var idx = this._array.length;
  if (!isDuplicate || aAllowDuplicates) {
    this._array.push(aStr);
  }
  if (!isDuplicate) {
    if (hasNativeMap) {
      this._set.set(aStr, idx);
    } else {
      this._set[sStr] = idx;
    }
  }
};

/**
 * Is the given string a member of this set?
 *
 * @param String aStr
 */
ArraySet.prototype.has = function ArraySet_has(aStr) {
  if (hasNativeMap) {
    return this._set.has(aStr);
  } else {
    var sStr = util.toSetString(aStr);
    return has.call(this._set, sStr);
  }
};

/**
 * What is the index of the given string in the array?
 *
 * @param String aStr
 */
ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
  if (hasNativeMap) {
    var idx = this._set.get(aStr);
    if (idx >= 0) {
        return idx;
    }
  } else {
    var sStr = util.toSetString(aStr);
    if (has.call(this._set, sStr)) {
      return this._set[sStr];
    }
  }

  throw new Error('"' + aStr + '" is not in the set.');
};

/**
 * What is the element at the given index?
 *
 * @param Number aIdx
 */
ArraySet.prototype.at = function ArraySet_at(aIdx) {
  if (aIdx >= 0 && aIdx < this._array.length) {
    return this._array[aIdx];
  }
  throw new Error('No element indexed by ' + aIdx);
};

/**
 * Returns the array representation of this set (which has the proper indices
 * indicated by indexOf). Note that this is a copy of the internal array used
 * for storing the members so that no one can mess with internal state.
 */
ArraySet.prototype.toArray = function ArraySet_toArray() {
  return this._array.slice();
};

exports.ArraySet = ArraySet;


/***/ }),

/***/ 972:
/***/ (function(__unusedmodule, exports) {

/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

exports.GREATEST_LOWER_BOUND = 1;
exports.LEAST_UPPER_BOUND = 2;

/**
 * Recursive implementation of binary search.
 *
 * @param aLow Indices here and lower do not contain the needle.
 * @param aHigh Indices here and higher do not contain the needle.
 * @param aNeedle The element being searched for.
 * @param aHaystack The non-empty array being searched.
 * @param aCompare Function which takes two elements and returns -1, 0, or 1.
 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 */
function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare, aBias) {
  // This function terminates when one of the following is true:
  //
  //   1. We find the exact element we are looking for.
  //
  //   2. We did not find the exact element, but we can return the index of
  //      the next-closest element.
  //
  //   3. We did not find the exact element, and there is no next-closest
  //      element than the one we are searching for, so we return -1.
  var mid = Math.floor((aHigh - aLow) / 2) + aLow;
  var cmp = aCompare(aNeedle, aHaystack[mid], true);
  if (cmp === 0) {
    // Found the element we are looking for.
    return mid;
  }
  else if (cmp > 0) {
    // Our needle is greater than aHaystack[mid].
    if (aHigh - mid > 1) {
      // The element is in the upper half.
      return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare, aBias);
    }

    // The exact needle element was not found in this haystack. Determine if
    // we are in termination case (3) or (2) and return the appropriate thing.
    if (aBias == exports.LEAST_UPPER_BOUND) {
      return aHigh < aHaystack.length ? aHigh : -1;
    } else {
      return mid;
    }
  }
  else {
    // Our needle is less than aHaystack[mid].
    if (mid - aLow > 1) {
      // The element is in the lower half.
      return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare, aBias);
    }

    // we are in termination case (3) or (2) and return the appropriate thing.
    if (aBias == exports.LEAST_UPPER_BOUND) {
      return mid;
    } else {
      return aLow < 0 ? -1 : aLow;
    }
  }
}

/**
 * This is an implementation of binary search which will always try and return
 * the index of the closest element if there is no exact hit. This is because
 * mappings between original and generated line/col pairs are single points,
 * and there is an implicit region between each of them, so a miss just means
 * that you aren't on the very start of a region.
 *
 * @param aNeedle The element you are looking for.
 * @param aHaystack The array that is being searched.
 * @param aCompare A function which takes the needle and an element in the
 *     array and returns -1, 0, or 1 depending on whether the needle is less
 *     than, equal to, or greater than the element, respectively.
 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'binarySearch.GREATEST_LOWER_BOUND'.
 */
exports.search = function search(aNeedle, aHaystack, aCompare, aBias) {
  if (aHaystack.length === 0) {
    return -1;
  }

  var index = recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack,
                              aCompare, aBias || exports.GREATEST_LOWER_BOUND);
  if (index < 0) {
    return -1;
  }

  // We have found either the exact element, or the next-closest element than
  // the one we are searching for. However, there may be more than one such
  // element. Make sure we always return the smallest of these.
  while (index - 1 >= 0) {
    if (aCompare(aHaystack[index], aHaystack[index - 1], true) !== 0) {
      break;
    }
    --index;
  }

  return index;
};


/***/ })

/******/ },
/******/ function(__webpack_require__) { // webpackRuntimeModules
/******/ 	"use strict";
/******/ 
/******/ 	/* webpack/runtime/make namespace object */
/******/ 	!function() {
/******/ 		// define __esModule on exports
/******/ 		__webpack_require__.r = function(exports) {
/******/ 			if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ 				Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ 			}
/******/ 			Object.defineProperty(exports, '__esModule', { value: true });
/******/ 		};
/******/ 	}();
/******/ 	
/******/ 	/* webpack/runtime/define property getter */
/******/ 	!function() {
/******/ 		// define getter function for harmony exports
/******/ 		var hasOwnProperty = Object.prototype.hasOwnProperty;
/******/ 		__webpack_require__.d = function(exports, name, getter) {
/******/ 			if(!hasOwnProperty.call(exports, name)) {
/******/ 				Object.defineProperty(exports, name, { enumerable: true, get: getter });
/******/ 			}
/******/ 		};
/******/ 	}();
/******/ 	
/******/ 	/* webpack/runtime/create fake namespace object */
/******/ 	!function() {
/******/ 		// create a fake namespace object
/******/ 		// mode & 1: value is a module id, require it
/******/ 		// mode & 2: merge all properties of value into the ns
/******/ 		// mode & 4: return value when already ns object
/******/ 		// mode & 8|1: behave like require
/******/ 		__webpack_require__.t = function(value, mode) {
/******/ 			if(mode & 1) value = this(value);
/******/ 			if(mode & 8) return value;
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