# Oxc crates_v0.144.0 — oxc crates_v0.144.0

- Product: Oxc (https://whatsnew.fyi/product/oxc)
- Vendor: Oxc
- Date: 2026-08-10
- Version: crates_v0.144.0
- Original notes: https://github.com/oxc-project/oxc/releases/tag/crates_v0.144.0
- Permalink: https://whatsnew.fyi/product/oxc/releases/crates-v0.144.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **removed** — Group class heritage into ClassHeritage
- **changed** — Narrow TSInterfaceHeritage::expression to TSTypeName
- **removed** — Remove duplicated VariableDeclarator::kind
- **removed** — Split TS external modules & Namespace Declarations
- **changed** — Restructure React transform options
- **added** — Add ArenaVec::push_mut to allocator
- **fixed** — Wrap string literal in parens after directives in codegen
- **fixed** — Preserve cast parentheses in conditional tests
- **fixed** — Preserve satisfies parentheses before bitwise operators
- **fixed** — Avoid unsafe return removal in labeled blocks
- **fixed** — Preserve terminal license comments in parser
- **fixed** — Downgrade nonfatal compiler diagnostics in transform_react
- **fixed** — Disable exhaustive memo validation by default in react_compiler
- **fixed** — Reject comma expressions in class fields
- **fixed** — Preserve hook spans for React Refresh
- **fixed** — Reset auto-accessor initializer context in parser
- **fixed** — Reject trailing tokens in Parser::parse_expression
- **fixed** — Preserve Annex B labeled-function bindings in implicit-return rewrite
- **fixed** — Report TS1035 for quoted module names
- **fixed** — Report module declaration diagnostics in semantic

###### 💥 BREAKING CHANGES

- a33788e ast: [**BREAKING**] Group class heritage into `ClassHeritage` (#25360) (camc314)
- 5c5cdcd ast: [**BREAKING**] Narrow `TSInterfaceHeritage::expression` to TSTypeName (#24360) (camc314)
- 6be314f ast: [**BREAKING**] Remove duplicated `VariableDeclarator::kind` (#25319) (camc314)
- 44fd320 ast: [**BREAKING**] Split TS external modules & Namespace Declarations (#25284) (camc314)

###### 🚀 Features

- 9a37c41 napi: Restructure React transform options (#25326) (Boshen)
- b3c1b30 allocator: Add `ArenaVec::push_mut` (#25338) (overlookmotel)

###### 🐛 Bug Fixes

- bbd6ed3 codegen: Wrap string literal in parens after directives (#25435) (overlookmotel)
- d07a293 codegen: Preserve cast parentheses in conditional tests (#25115) (camc314)
- 8b7d441 codegen: Preserve satisfies parentheses before bitwise operators (#25113) (camc314)
- e0fb2d7 minifier: Avoid unsafe return removal in labeled blocks (#25406) (Armano)
- c49f4ce parser: Preserve terminal license comments (#25400) (camc314)
- 9d19ab3 transform_react: Downgrade nonfatal compiler diagnostics (#25418) (Boshen)
- 937825c react_compiler: Disable exhaustive memo validation by default (#25417) (Boshen)
- 12937b3 parser: Reject comma expressions in class fields (#25385) (Cameron)
- 7d8a9b5 react_compiler: Preserve hook spans for React Refresh (#25393) (Boshen)
- 9e93ba6 parser: Reset auto-accessor initializer context (#25384) (camc314)
- cc2e28d parser: Reject trailing tokens in `Parser::parse_expression` (#25371) (camc314)
- 697c629 minifier: Preserve Annex B labeled-function bindings in implicit-return rewrite (#25349) (Armano)
- 4d723ca parser: Report TS1035 for quoted module names (#25305) (camc314)
- 0c9b980 semantic: Report module declaration diagnostics (#25285) (camc314)
- 2a1058a napi: Omit parser header from WASI declarations (#25254) (camc314)

###### ⚡ Performance

- dd1430b semantic: Avoid allocation in class overload check (#25440) (camc314)
- e420816 parser: Optimize trailing comma tracking (#25376) (camc314)
- 6529d1a minifier: Short-circuit scope check when alternate already determines result (#25318) (Armano)

###### 📚 Documentation

- fe111eb allocator: Improve doc comments for `Arena` methods (#24922) (overlookmotel)