Make most tests pass on Windows

[Macil]

While investigating #14, I found that the tests couldn't be run on Windows:

1. Running npm test failed with this output:

PS E:\chris\Coding\shellac> npm test

> shellac@0.8.0 test
> NODE_OPTIONS=--experimental-vm-modules jest

'NODE_OPTIONS' is not recognized as an internal or external command,
operable program or batch file.

This PR uses cross-env to fix that.

2. After that, running npm test failed with output like this:

 FAIL  test/failures.test.ts
  ● Test suite failed to run
                                                                                                                                       
    SyntaxError: The requested module './shell' does not provide an export named 'default'                                             
                                                                                                                                       
      at Runtime.linkAndEvaluateModule (node_modules/.pnpm/jest-runtime@27.5.1/node_modules/jest-runtime/build/index.js:779:5)

This appears to be an issue with Jest with ESM on Windows that has been fixed in newer Jest versions, so I updated Jest and most dev dependencies to fix that.

3. A lot of tests were broken because stuff like Bash on Windows normalizing file paths to look Unix style (C:\Users into /c/Users) or because of assumptions that process pids are strictly monotonically increasing or that the user has "EDITOR" and "TMPDIR" env variables set, so I fixed the tests to not depend on these things.

With these changes, the tests go from not starting at all on Windows to having 49/51 passing (depending on the build of Bash installed).

Full npm test output on Windows

PS E:\chris\Coding\shellac> npm test

> shellac@0.8.0 test
> cross-env NODE_OPTIONS=--experimental-vm-modules jest

(node:34528) ExperimentalWarning: VM Modules is an experimental feature and might change at any time
(Use `node --trace-warnings ...` to show where the warning was created)
 PASS  test/parser.test.ts
(node:43460) ExperimentalWarning: VM Modules is an experimental feature and might change at any time                                                                       
(Use `node --trace-warnings ...` to show where the warning was created)                                                                                                    
 PASS  test/failures.test.ts                                                                                                                                               
(node:5184) ExperimentalWarning: VM Modules is an experimental feature and might change at any time                                                                        
(Use `node --trace-warnings ...` to show where the warning was created)
(node:46572) ExperimentalWarning: VM Modules is an experimental feature and might change at any time
(Use `node --trace-warnings ...` to show where the warning was created)
1
2
3
 PASS  test/env.test.ts
one - two
node:fs:1634
  const stats = binding.lstat(
                        ^

Error: ENOENT: no such file or directory, lstat 'C:\UsersagentAppDataLocalTemptmp-5184-CBUlxIGDbZHZ'
    at Object.lstatSync (node:fs:1634:25)
    at print (E:\chris\Coding\shellac\node_modules\.pnpm\tree-node-cli@1.6.0\node_modules\tree-node-cli\src\index.js:50:20)
    at tree (E:\chris\Coding\shellac\node_modules\.pnpm\tree-node-cli@1.6.0\node_modules\tree-node-cli\src\index.js:160:10)
    at Object.<anonymous> (E:\chris\Coding\shellac\node_modules\.pnpm\tree-node-cli@1.6.0\node_modules\tree-node-cli\bin\tree.js:60:16)
    at Module._compile (node:internal/modules/cjs/loader:1368:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1426:10)
    at Module.load (node:internal/modules/cjs/loader:1205:32)
    at Module._load (node:internal/modules/cjs/loader:1021:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:142:12)
    at node:internal/main/run_main_module:28:49 {
  errno: -4058,
  code: 'ENOENT',
  syscall: 'lstat',
  path: 'C:\\UsersagentAppDataLocalTemptmp-5184-CBUlxIGDbZHZ'
}

Node.js v21.7.3
EXIT WHEN NOT EXPECTED

SHELLAC COMMAND FAILED!
Executing: npx tree-node-cli C:\Users\agent\AppData\Local\Temp\tmp-5184-CBUlxIGDbZHZ in E:\chris\Coding\shellac

STDOUT:



STDERR:

node:fs:1634
  const stats = binding.lstat(
                        ^

Error: ENOENT: no such file or directory, lstat 'C:\UsersagentAppDataLocalTemptmp-5184-CBUlxIGDbZHZ'
    at Object.lstatSync (node:fs:1634:25)
    at print (E:\chris\Coding\shellac\node_modules\.pnpm\tree-node-cli@1.6.0\node_modules\tree-node-cli\src\index.js:50:20)
    at tree (E:\chris\Coding\shellac\node_modules\.pnpm\tree-node-cli@1.6.0\node_modules\tree-node-cli\src\index.js:160:10)
    at Object.<anonymous> (E:\chris\Coding\shellac\node_modules\.pnpm\tree-node-cli@1.6.0\node_modules\tree-node-cli\bin\tree.js:60:16)
    at Module._compile (node:internal/modules/cjs/loader:1368:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1426:10)
    at Module.load (node:internal/modules/cjs/loader:1205:32)
    at Module._load (node:internal/modules/cjs/loader:1021:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:142:12)
    at node:internal/main/run_main_module:28:49 {
  errno: -4058,
  code: 'ENOENT',
  syscall: 'lstat',
  path: 'C:\\UsersagentAppDataLocalTemptmp-5184-CBUlxIGDbZHZ'
}

Node.js v21.7.3


EXIT WHEN NOT EXPECTED/tmp/tmp-5184-CcKbT3NT7TRg/lol boats
/tmp/tmp-5184-yPkFGjx16iyQ/lol boats
/tmp/tmp-5184-yPkFGjx16iyQ/lol boats/subdir
(node:5184) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 exit listeners added to [ChildProcess]. Use emitter.setMaxListeners() to increase limit
background boi start
1
2
3
background boi done
background boi start
1
      PID    PPID    PGID     WINPID   TTY         UID    STIME COMMAND
     1502    1501    1501      49508  ?         197609 20:20:47 /usr/bin/ps
     1500       1    1500      41032  ?         197609 20:20:47 /usr/bin/bash
     1503    1500    1500      50560  ?         197609 20:20:47 /usr/bin/sleep
     1008       1    1008      31292  cons0     197609 19:35:37 /usr/bin/bash
     1501       1    1501      52036  ?         197609 20:20:47 /usr/bin/bash
/usr/bin/bash: line 6: kill: (49952) - No such process
2
EXIT WHEN NOT EXPECTED

SHELLAC COMMAND FAILED!
Executing: kill 49952 in E:\chris\Coding\shellac

STDOUT:



STDERR:

/usr/bin/bash: line 6: kill: (49952) - No such process


 FAIL  test/basic.test.ts (7.95 s)
  ● getting started › should create files and directories
                                                                                                                                                                           
    thrown: Object {                                                                                                                                                       
      "cmd": "npx tree-node-cli C:\\Users\\agent\\AppData\\Local\\Temp\\tmp-5184-CBUlxIGDbZHZ",                                                                            
      "retCode": 1,                                                                                                                                                        
      "stderr": "node:fs:1634                                                                                                                                              
      const stats = binding.lstat(                                                                                                                                         
                            ^

    Error: ENOENT: no such file or directory, lstat 'C:\\UsersagentAppDataLocalTemptmp-5184-CBUlxIGDbZHZ'

      at Object.lstatSync (node:fs:1634:25)
      at print (node_modules/.pnpm/tree-node-cli@1.6.0/node_modules/tree-node-cli/src/index.js:50:20)
      at tree (node_modules/.pnpm/tree-node-cli@1.6.0/node_modules/tree-node-cli/src/index.js:160:10)
      at Object.<anonymous> (node_modules/.pnpm/tree-node-cli@1.6.0/node_modules/tree-node-cli/bin/tree.js:60:16)
      at Module._compile (node:internal/modules/cjs/loader:1368:14)
      at Module._extensions..js (node:internal/modules/cjs/loader:1426:10)
      at Module.load (node:internal/modules/cjs/loader:1205:32)
      at Module._load (node:internal/modules/cjs/loader:1021:12)
      at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:142:12)
      at node:internal/main/run_main_module:28:49 {
        errno: -4058,
        code: 'ENOENT',
        syscall: 'lstat',
        path: 'C:\\\\UsersagentAppDataLocalTemptmp-5184-CBUlxIGDbZHZ'
      }
      
      Node.js v21.7.3
      ",
        "stdout": "",
      }
      at test/basic.test.ts:226:3
      at test/basic.test.ts:11:1

  ● getting started › should permit killing background tasks

    thrown: Object {
      "cmd": "kill 49952",
      "retCode": 1,
      "stderr": "/usr/bin/bash: line 6: kill: (49952) - No such process
    ",
      "stdout": "",
    }

      374 |   })
      375 |
    > 376 |   it('should permit killing background tasks', async () => {
          |   ^
      377 |     const { pid, promise } = await shellac.bg`
      378 |       $$ echo background boi start
      379 |       exits {

      at test/basic.test.ts:376:3
      at test/basic.test.ts:11:1

A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try running with --detectOpenHandles to find leaks. Active timers can also cause this, ensure that .unref() was called on them.
Test Suites: 1 failed, 3 passed, 4 total                                                                                                                                   
Tests:       2 failed, 49 passed, 51 total                                                                                                                                 
Snapshots:   0 total                                                                                                                                                       
Time:        8.836 s, estimated 9 s                                                                                                                                        
Ran all test suites.