crates_v0.136.0

oxc-project/oxccrates_v0.136.0Jun 15, 2026by github-actions[bot]

AI Summary

This release introduces React Compiler support as a feature-gated transform pass and adds numerous TypeScript diagnostics. It includes performance improvements to the parser and codegen, such as table-driven operator precedence.

Key Highlights

  • React Compiler integration as a transform pass
  • React Compiler rule implementation in the linter
  • New TypeScript diagnostics for parameter properties and ambient assertions
  • Performance: Table-driven operator precedence lookup

Breaking Changes

  • Borrow sourcemaps from codegen
  • Disable styled-components transpileTemplateLiterals by default

New Features

  • Implement react-compiler rule
  • Support `module.property.useHook()`
  • Report TS1228 for invalid type predicates
  • Add `scope_is_descendant_of` api

Full Release Notes

### 💥 BREAKING CHANGES

- 7a24911 codegen: [**BREAKING**] Borrow sourcemaps from codegen (#23422) (Boshen)
- bb0ed44 transformer: [**BREAKING**] Disable styled-components transpileTemplateLiterals by default (#23171) (Boshen)

### 🚀 Features

- 1490a0a linter/react: Implement react-compiler rule (#23202) (Boshen)
- 6c0bdf0 transformer/react-refresh: Support `module.property.useHook()` (#23190) (Dunqing)
- 47991bd semantic: Report TS1228 for invalid type predicates (#23174) (camc314)
- 1d3af58 parser: Add TS2398 parameter property diagnostic (#23216) (camc314)
- 44313da semantic: Add `scope_is_descendant_of` api (#22313) (camc314)
- e5050c0 parser: Improve diagnostic for rest initializer (#23205) (camc314)
- ec266bb transformer: Run React Compiler as a feature-gated transform pass (#23201) (Boshen)
- e7374fe parser: Report error for `const` modifier on interface type parameter (#23173) (camc314)
- a7c1c9b parser: Report ambient definite variable assertions (#23165) (camc314)
- d169fcd parser: Report invalid class definite assertions (#23164) (camc314)
- 00244d8 parser: Report definite property initializer errors (#23160) (camc314)

### 🐛 Bug Fixes

- 52d0c31 transformer: Replace ambient dot defines (#23231) (camc314)
- 2c28748 transformer/class: Parent generated constructors to class scope (#23222) (camc314)
- 8edd234 parser: Report accessor definite assertion on token (#23203) (camc314)
- de38a3f react_compiler: Keep imports referenced only by a local re-export (#23176) (Boshen)
- f5721c2 codegen: Preserve parentheses around `intrinsic` type reference (#23156) (Boshen)
- e89f81d parser: Don't emit TS1477 for parenthesized instantiation expression (#23147) (Boshen)
- 8a04149 parser: Reject module-referencing imports/exports in a namespace body (#22829) (Boshen)

### ⚡ Performance

- 2783295 parser: Table-driven operator precedence lookup (#23346) (Boshen)
- 231d5de parser: Single-match member expression dispatch (#23347) (Boshen)
- e89729b codegen: Accept one-shot wrap closures (#23265) (camc314)
- a6c11fa parser: Force-inline read_non_decimal to fold per-digit number dispatch (#23157) (Boshen)
- d74964c parser: Store class definite assertion offset (#23170) (camc314)
- f0fda4d parser: Shrink-wrap cold diagnostic tails out of hot frames (#23159) (Boshen)
- a082180 parser: Store definite assertion offset (#23167) (camc314)
- 534f9c6 oxc: Conditionally rebuild semantic in compiler pipeline (#23153) (Boshen)
- b435c6a parser: Skip checkpoint for `infer T extends U` constraint in disallow context (#23128) (Boshen)
- 7464dce parser: Peek instead of checkpoint/rewind for `export default` modifier (#23124) (Boshen)
- 80a9a32 parser: Fast-path single-keyword TS declarations (#23083) (Boshen)
- da1a6c6 diagnostics: Migrate to allocation-optimized oxc-miette (#23094) (Boshen)
- b7b08ce parser: Peek once for the static modifier disambiguation (#23079) (Boshen)
- e7e07a3 parser: Fold unary dispatch into a single match (#23076) (Boshen)

### 📚 Documentation

- d241add semantic: Add `AGENTS.md` test guidance for agents (#23441) (camc314)
- 026f1ae parser: Add `AGENTS.md` test guidance for agents (#23440) (camc314)
- 09755ac transformer: Add `AGENTS.md` test guidance for agents (#23439) (camc314)
- e6bdfd4 lexer: Correct reference link for `byte_handlers!` (#23313) (Dunqing)
- 65b6d7a allocator: Fix memory leaks in `Arena` examples (#23257) (overlookmotel)