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Dunqing 06ccb51fae fix(transformer/async-to-generator): move parameters to the inner generator function when they could throw errors (#8500) 
The new implementation port from [esbuild](df815ac27b/internal/js_parser/js_parser_lower.go (L355-L467)), before from `Babel`.

Babel's transform implementation for the async method is incorrect because the async method should return a rejecting promise when it throws an error. Everything is good if the errors are thrown in the async method body, but the following case will throw an error in the parameters which causes the whole program crushed not a rejecting promise. So we should move the parameters to the inner generator function when the parameters could throw an error.

Input:
```js
class Cls {
  // ReferenceError: Cannot access 'b' before initialization
  async method(a = b, b = 0) {}
}
```

Before output
```js
class Cls {
  method(a = b, b = 0) {
    return babelHelpers.asyncToGenerator(function* () {})();
  }
}
```

After output:
```js
class Cls {
  method() {
     // ReferenceError: Cannot access 'b' before initialization
    return babelHelpers.asyncToGenerator(function* (a = b, b = 0) {}).apply(this, arguments);
  }
}
```

No override tests because Babel doesn't cover this case.
2025-01-16 00:18:05 +00:00
..
misc fix(parser): allow line breaks between const and enum (#8193) 2024-12-31 08:45:17 +08:00
snapshots fix(transformer/async-to-generator): move parameters to the inner generator function when they could throw errors (#8500) 2025-01-16 00:18:05 +00:00
src chore(tasks/coverage): ignore fn-name-cover.js in test262 minifier runtime 2025-01-10 10:47:09 +08:00
Cargo.toml chore(tasks/coverage): fix test262 cases to run on windows (#8358) 2025-01-09 10:48:37 +08:00
README.md chore: use dprint to format js, json and markdown 2024-09-08 13:24:58 +08:00

README.md

Coverage

Tools are tested against test262, babel and TypeScript for conformance.

Clone the test repositories beforehand:

just submodules

Development

# full run
cargo coverage
cargo coverage js # for test262
cargo coverage babel # for babel
cargo coverage ts # for typescript

# run in watch
cargo watch -x 'coverage js'

# filter for a file path
cargo watch -x 'coverage js --filter filter-file-path'

# find crash scene by turning off rayon and print out the test cases in serial
cargo coverage -- --debug

# Run after submodules are updated
UPDATE_SNAPSHOT=1 just c