Files
Boshen fca2e0cfed fix(parser): reject initialized lexical declarations in for-in (#25700)
Rejects initialized `let` and `const` declarations in `for...in` during parsing while preserving Annex B's non-strict `var` form.

Adds misc coverage for valid and invalid initializer forms.

Verified with `just ready` and parser conformance.

Closes #25149.

AI-assisted.
2026-08-15 06:58:08 +00:00
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Coverage tests

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