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oxc-project__oxc/crates/oxc/CHANGELOG.md
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oxc-guard 60fa13878c release(crates): oxc v0.149.0 (#26397) 
### 💥 BREAKING CHANGES

- 66744f0 parser: [**BREAKING**] Rename `panicked` to `fatal_error` in `ParserReturn` (#26382) (overlookmotel)
- 2c9a947 parser: [**BREAKING**] Reduce `MAX_LEN` to 256 bytes below `u32::MAX` (#26352) (overlookmotel)

### 🚀 Features

- 32bdc5b allocator: Construct `ArenaHashSet` with any `Default` hasher (#26372) (Dunqing)
- a17de58 minifier: Process of return/throw in non last position and fix async * inlining (#26214) (Armano)
- bfb4c57 parser: Distinguish unapplied no-side-effects comments (#26120) (碳苯 Carbon)
- 1d9b9d3 ast: Add `GetNodeId` trait (#26145) (camc314)

### 🐛 Bug Fixes

- b156333 codegen: Order accessibility before abstract on accessors (#26392) (camc314)
- 116c8b8 transformer/class-properties: Keep private methods in class-expression scope (#26308) (Changsu Seong)
- 1400a0f parser: Require a string source after `export ... from` (#26389) (camc314)
- 2da73b7 codegen: Print matching quoted import names as identifiers (#26386) (camc314)
- 0a81d29 codegen: Preserve private-in left operand precedence (#26383) (camc314)
- 9a02337 parser: Correctly round large nondecimal literals (#26379) (camc314)
- 3d95477 transformer: Gate async-only rewrites by owning transform (#26326) (Dunqing)
- f45a9ee transformer: Limit arguments capture to lowered async functions (#26317) (Dunqing)
- 789969f transformer: Gate this capture by owning async transform (#26227) (Dunqing)
- affeb14 minifier: Mangle class private members in Node API (#26118) (碳苯 Carbon)
- 8b35abd semantic: Detect duplicate private class elements (#26361) (camc314)
- 457ed57 semantic: Reject await and yield in rest parameter defaults (#26359) (camc314)
- 4b89c7b semantic: Reject jumps across arrow functions (#26357) (camc314)
- c966aca parser: Do not omit `<` token opening type argument list (#26328) (overlookmotel)
- f07dca5 ast_visit: Add the trimmed prefix length to translation table offsets (#26173) (Bharadwaj Pendyala)
- 3ab9bd1 parser: Do not re-lex template substitution tail after fatal error (#26230) (overlookmotel)
- 07851b9 parser: Fix debug assert failure when lexer error with tokens enabled (#26229) (overlookmotel)
- 00dea7a allocator: Gate `Allocator::data_end_ptr` behind fixed_size feature (#26248) (camc314)
- 853ffab ecmascript: Avoid `charAt` panic on 32-bit (#26244) (camc314)
- 34feccb runtime: Remove stale regenerator exports (#26243) (camc314)

### ⚡ Performance

- 34a242e minifier: Use `Ident` for property mangler (#26334) (sapphi-red)
- 5303f5c minifier: Unify merging of last expression into target sequence (#26264) (Armano)
- 2ca7d29 minifier: Consume nodes in minimize_statements in reverse order (#26258) (Armano)
- d2354b4 mangler: Use `Ident` for variable names to keep (#26333) (sapphi-red)
- 5b3e335 minifier: Use `Ident` instead of `Str` in `KeepVar` (#26332) (sapphi-red)
- 51366fb minifier: Use `IdentHashSet` in `PrivateMemberUsageStack` (#26331) (sapphi-red)
- d19c42a minifier: Merge nested if stmt in place instead of creating dummies (#26351) (Armano)
- 356def6 parser: Shrink annotation comment ranges (#26356) (overlookmotel)
- a5be474 parser: Shave instruction off `parse_jsx_element_name` (#26355) (overlookmotel)
- 9780663 parser: Remove fatal error guard from `parse_jsx_element_name` (#26354) (overlookmotel)
- 766e12f parser: Remove `token` field from `LexerCheckpoint` (#26350) (overlookmotel)

### 📚 Documentation

- d4b4e61 transformer: Document ES2015 target floor (#26378) (Dunqing)
- 67dd054 ast_visit: Correct out-of-date comments on `Utf8ToUtf16` converter (#26285) (overlookmotel)
- a8ed2a7 minifier: Fix stale validation instructions (#26251) (camc314)
2026-09-07 14:29:34 +00:00

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Changelog

All notable changes to this package will be documented in this file.

The format is based on Keep a Changelog.

[0.149.0] - 2026-09-07

💥 BREAKING CHANGES

  • 66744f0 parser: [BREAKING] Rename panicked to fatal_error in ParserReturn (#26382) (overlookmotel)

[0.142.0] - 2026-07-27

🚀 Features

  • 73cfdfa oxc: Re-export oxc_str types from oxc crate (#24860) (overlookmotel)

[0.138.0] - 2026-06-29

🐛 Bug Fixes

  • 8c07cad all: Enable disable_old_builder Cargo feature for oxc_ast crate in tests (#23888) (overlookmotel)

[0.137.0] - 2026-06-18

⚡ Performance

  • 3170c0e semantic,mangler,minifier: Fix Semantic::stats node count and reuse stats in mangler builds (#23352) (Boshen)

[0.136.0] - 2026-06-15

💥 BREAKING CHANGES

  • 7a24911 codegen: [BREAKING] Borrow sourcemaps from codegen (#23422) (Boshen)

🚀 Features

  • ec266bb transformer: Run React Compiler as a feature-gated transform pass (#23201) (Boshen)

⚡ Performance

  • 534f9c6 oxc: Conditionally rebuild semantic in compiler pipeline (#23153) (Boshen)

[0.135.0] - 2026-06-08

🚀 Features

  • b846ab2 react_compiler: Integrate the Rust port of the React Compiler (#22942) (Boshen)

[0.130.0] - 2026-05-11

📚 Documentation

  • 9305373 oxc: Update README (#22178) (camc314)

[0.125.0] - 2026-04-13

🚀 Features

  • 75663c0 semantic: Add enum member value evaluation for const enum support (#20602) (Dunqing)

[0.111.0] - 2026-01-26

💥 BREAKING CHANGES

  • 30a4899 oxc: [BREAKING] Remove CompilerInterface::semantic_child_scope_ids (#18361) (Dunqing)

[0.106.0] - 2025-12-29

🚀 Features

  • e031056 codegen: Add sourcemap feature flag (#17305) (Boshen)

[0.95.0] - 2025-10-15

🐛 Bug Fixes

  • 5e0ab1b tranformer_plugins: Define plugin need to add reference to scoping (#14615) (Boshen)

[0.94.0] - 2025-10-06

🐛 Bug Fixes

  • 013e053 napi/transform: Fix define plugin not applying DCE correctly (#14264) (Boshen)

[0.93.0] - 2025-09-28

🚀 Features

  • 5e05d1b semantic: Put jsdoc behind linter feature, remove runtime flag (#14140) (Boshen)

[0.92.0] - 2025-09-24

🚀 Features

  • 0fe4d95 mangler: Mangle private class members (#14027) (sapphi-red)

[0.91.0] - 2025-09-22

💼 Other

  • fb347da crates: V0.91.0 (#13961) (Boshen)

[0.88.0] - 2025-09-15

⚡ Performance

  • 08c05df semantic: Make CFG construction a compile-time feature (#13678) (Boshen)

[0.80.0] - 2025-08-03

📚 Documentation

  • 514322c rust: Add minimal documentation to example files in crates directory (#12731) (Copilot)

[0.77.2] - 2025-07-17

🚜 Refactor

  • eb12132 minifier: Unify access CompressOptions through ctx.state (#12346) (Boshen)

Changelog

All notable changes to this package will be documented in this file.

The format is based on Keep a Changelog, and this project does not adhere to Semantic Versioning until v1.0.0.

[0.70.0] - 2025-05-15

Testing

  • a05361e ast/estree: Check span offsets are converted in ascending order in ESTree conformance tests (#10887) (overlookmotel)

[0.68.0] - 2025-05-03

  • 315143a codegen: [BREAKING] Remove useless CodeGenerator type alias (#10702) (Boshen)

Bug Fixes

  • 4795059 transformer_plugins: Provide reference data when identifiers are replaced (#10620) (Boshen)

Refactor

[0.67.0] - 2025-04-27

Features

  • 1962bc6 transformer_plugins: Split out oxc_transformer_plugins crate (#10617) (Boshen)

Testing

  • fbd6864 transformer_plugins: Apply DCE after replace plugin (#10619) (Boshen)

[0.61.0] - 2025-03-20

Features

  • a9a47a6 parser: Add regex cargo feature to oxc_parser (#9879) (Toshit)

[0.57.0] - 2025-03-11

  • ef6e0cc semantic: [BREAKING] Combine SymbolTable and ScopeTree into Scoping (#9615) (Boshen)

  • 23738bf semantic: [BREAKING] Introduce Scoping (#9611) (Boshen)

Refactor

[0.55.0] - 2025-03-05

Features

  • d55dbe2 ast/estree: Raw transfer (experimental) (#9516) (overlookmotel)

[0.54.0] - 2025-03-04

  • a5cde10 visit_ast: [BREAKING] Add oxc_visit_ast crate (#9428) (Boshen)

Features

[0.49.0] - 2025-02-10

Styling

  • a4a8e7d all: Replace #[allow] with #[expect] (#8930) (overlookmotel)

[0.48.2] - 2025-02-02

Refactor

  • 6aa2dde codegen: Accept SymbolTable instead of Mangler (#8829) (Daniel Bulant)

[0.47.0] - 2025-01-18

  • 4ce6329 semantic: [BREAKING] Ensure program outlives semantic (#8455) (Valentinas Janeiko)

Bug Fixes

[0.42.0] - 2024-12-18

Refactor

  • 1314c97 minifier: Expose dce as an API instead of an option (#7957) (Boshen)

[0.39.0] - 2024-12-04

  • 8a788b8 parser: [BREAKING] Build ModuleRecord directly in parser (#7546) (Boshen)

Features

  • 40792b4 napi/parser: Change parse API to accept mandatory filename and optional lang (#7605) (Boshen)
  • 7c62a33 napi/parser: Return esm info (#7602) (Boshen)
  • 5864352 napi/transform: Add TransformerOptions::assumptions (#7601) (翠 / green)
  • 771c698 oxc: Remove oxc_napi crate (#7634) (Boshen)
  • bd977cf oxc: Add oxc_napi crate (#7612) (Boshen)

[0.38.0] - 2024-11-26

  • 5d65656 oxc_index: [BREAKING] Move to own repo github.com/oxc-project/oxc-index-vec (#7464) (Boshen)

  • bb2c0c2 transformer: [BREAKING] Return String as error instead of OxcDiagnostic (#7424) (Boshen)

Features

  • 59e7e46 napi/transform: Add TransformOptions::target API (#7426) (Boshen)

Refactor

[0.36.0] - 2024-11-09

  • 846711c transformer: [BREAKING] Change API to take a &TransformOptions instead of TransformOptions (#7213) (Boshen)

Features

[0.35.0] - 2024-11-04

Features

  • fcaba4a transformer: Add TransformerOptions::env with EnvOptions (#7037) (Boshen)

Bug Fixes

  • d15e408 napi/transform: Fix 'typescript.declaration' option not working (#7012) (Boshen)
  • b188b4a transformer: Fix typescript globals being recognized as globals (#7100) (Boshen)

[0.34.0] - 2024-10-26

  • 4618aa2 transformer: [BREAKING] Rename TransformerOptions::react to jsx (#6888) (Boshen)

  • 67a7bde napi/parser: [BREAKING] Add typings to napi/parser (#6796) (ottomated)

Features

Bug Fixes

  • 4dc5e51 transformer: Only run typescript plugin for typescript source (#6889) (Boshen)
  • b075982 types: Change @oxc/types package name (#6874) (ottomated)

Refactor

[0.32.0] - 2024-10-19

  • 91c87dd codegen: [BREAKING] Remove Codegen::enableSourceMap API (#6452) (Boshen)

  • 7645e5c codegen: [BREAKING] Remove CommentOptions API (#6451) (Boshen)

  • 5200960 oxc: [BREAKING] Remove passing Trivias around (#6446) (Boshen)

Refactor

[0.31.0] - 2024-10-08

  • 020bb80 codegen: [BREAKING] Change to CodegenReturn::code and CodegenReturn::map (#6310) (Boshen)

  • 4f6bc79 transformer: [BREAKING] Remove source_type param from Transformer::new (#6251) (overlookmotel)

Features

  • abd3a9f napi/transform: Perform dce after define plugin (#6312) (Boshen)
  • a0ccc26 napi/transform: Add lang option to change source type (#6309) (Boshen)
  • 2f888ed oxc: Add napi transform options (#6268) (Boshen)
  • 8729755 oxc,napi/transform: Napi/transform use oxc compiler pipeline (#6298) (Boshen)

Refactor

  • aa0dbb6 oxc: Add napi feature, change napi parser to use oxc crate (#6265) (Boshen)

[0.30.2] - 2024-09-27

Documentation

  • d60ceb4 oxc: Add README.md and crate-level docs (#6035) (DonIsaac)

[0.30.1] - 2024-09-24

Documentation

  • 18371dd oxc: Include feature-guarded modules in docs.rs (#6012) (DonIsaac)

[0.30.0] - 2024-09-23

Features

  • 3230ae5 semantic: Add SemanticBuilder::with_excess_capacity (#5762) (overlookmotel)

Documentation

  • bacfbb8 oxc: Add submodule documentation (#5984) (DonIsaac)

[0.28.0] - 2024-09-11

  • b060525 semantic: [BREAKING] Remove source_type argument from SemanticBuilder::new (#5553) (Boshen)

Features

  • 2016bae coverage: Add regular expression idempotency test (#5676) (Boshen)

Refactor

[0.27.0] - 2024-09-06

Features

  • ed8ab6d oxc: Conditional expose oxc_cfg in oxc crate (#5524) (IWANABETHATGUY)

[0.26.0] - 2024-09-03

Features

  • be4642f semantic: Transform checker check child scope IDs (#5410) (overlookmotel)

Refactor

  • 3ae94b8 semantic: Change build_module_record to accept &Path instead of PathBuf (Boshen)

[0.25.0] - 2024-08-23

  • ce4d469 codegen: [BREAKING] Remove const generic MINIFY (#5001) (Boshen)

Features

  • 6800e69 oxc: Add Compiler and CompilerInterface (#4954) (Boshen)

Refactor

  • cd9cf5e oxc: Remove remove_whitespace (Boshen)
  • b4407c4 oxc,mangler: oxc crate add mangler; mangler use options API (Boshen)
  • 4fdf26d transform_conformance: Add driver (#4969) (Boshen)

[0.21.0] - 2024-07-18

Features

  • 8a190eb oxc: Export oxc_mangler (Boshen)

[0.16.0] - 2024-06-26

Features

  • 4fb90eb oxc: Export isolated-declarations (#3765) (Boshen)

[0.13.0] - 2024-05-14

Features

  • f6daf0b sourcemap: Add feature "sourcemap_concurrent" (Boshen)

[0.11.0] - 2024-03-30

Features

  • b199cb8 Add oxc sourcemap crate (#2825) (underfin)

[0.10.0] - 2024-03-14

Features

  • 697b6b7 Merge features serde and wasm to serialize (#2716) (Boshen)

[0.6.0] - 2024-02-03

Features

  • cd5026c ast: TypeScript definition for wasm target (#2158) (Nicholas Roberts)

[0.5.0] - 2024-01-12

Features

  • f1b433b playground: Visualize symbol (#1886) (Dunqing)

Refactor

  • a6717db formatter,linter,codegen: Remove oxc_formatter (#1968) (Boshen)

[0.4.0] - 2023-12-08

Refactor

  • 1a576f6 rust: Move to workspace lint table (#1444) (Boshen)

[0.3.0] - 2023-11-06

Features

  • 2e2b758 playground: Add transform and minify (#993) (Boshen)
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