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perf(oxfmt): use RwLock instead of Mutex for TSFN handles#18888

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fix/oxfmt-rwlock-perf
Feb 3, 2026
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perf(oxfmt): use RwLock instead of Mutex for TSFN handles#18888
graphite-app[bot] merged 1 commit intomainfrom
fix/oxfmt-rwlock-perf

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@Boshen Boshen commented Feb 3, 2026

Summary

  • Replace Mutex with RwLock for ThreadsafeFunction handles in ExternalFormatter
  • Wrapper functions now use .read() (allows concurrent reads) instead of .lock() (exclusive)
  • Only cleanup() uses .write() since it's the only operation that modifies the Options

This addresses the ~25% performance regression introduced by #18723. The original fix wrapped TSFNs in Arc<Mutex<Option<...>>> to prevent V8 crashes on Node.js exit, but Mutex serializes all callback invocations even though they only read from the Option.

With RwLock, concurrent formatting operations can proceed without contention, only blocking for the single cleanup call at the end.

Closes #18839

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Copilot AI review requested due to automatic review settings February 3, 2026 12:40
@github-actions github-actions bot added A-cli Area - CLI A-formatter Area - Formatter C-performance Category - Solution not expected to change functional behavior, only performance labels Feb 3, 2026
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Pull request overview

This PR addresses a ~25% performance regression introduced by #18723 by replacing Mutex with RwLock for ThreadsafeFunction handles in the external formatter implementation.

Changes:

  • Replace Mutex with RwLock for all ThreadsafeFunction handles in TsfnHandles struct
  • Update all wrapper functions to use .read() instead of .lock() for concurrent read access
  • Update cleanup() method to use .write() for exclusive write access when dropping TSFNs

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@Boshen Boshen added the 0-merge Merge with Graphite Merge Queue label Feb 3, 2026
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Boshen commented Feb 3, 2026

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graphite-app bot pushed a commit that referenced this pull request Feb 3, 2026
## Summary

- Replace `Mutex` with `RwLock` for ThreadsafeFunction handles in `ExternalFormatter`
- Wrapper functions now use `.read()` (allows concurrent reads) instead of `.lock()` (exclusive)
- Only `cleanup()` uses `.write()` since it's the only operation that modifies the Options

This addresses the ~25% performance regression introduced by #18723. The original fix wrapped TSFNs in `Arc<Mutex<Option<...>>>` to prevent V8 crashes on Node.js exit, but `Mutex` serializes all callback invocations even though they only read from the Option.

With `RwLock`, concurrent formatting operations can proceed without contention, only blocking for the single cleanup call at the end.

Closes #18839

🤖 Generated with [Claude Code](https://claude.ai/code)
@graphite-app graphite-app bot force-pushed the fix/oxfmt-rwlock-perf branch from e660dea to a6d9efa Compare February 3, 2026 12:51
## Summary

- Replace `Mutex` with `RwLock` for ThreadsafeFunction handles in `ExternalFormatter`
- Wrapper functions now use `.read()` (allows concurrent reads) instead of `.lock()` (exclusive)
- Only `cleanup()` uses `.write()` since it's the only operation that modifies the Options

This addresses the ~25% performance regression introduced by #18723. The original fix wrapped TSFNs in `Arc<Mutex<Option<...>>>` to prevent V8 crashes on Node.js exit, but `Mutex` serializes all callback invocations even though they only read from the Option.

With `RwLock`, concurrent formatting operations can proceed without contention, only blocking for the single cleanup call at the end.

Closes #18839

🤖 Generated with [Claude Code](https://claude.ai/code)
@graphite-app graphite-app bot force-pushed the fix/oxfmt-rwlock-perf branch from a6d9efa to 61e0efa Compare February 3, 2026 12:58
@graphite-app graphite-app bot merged commit 61e0efa into main Feb 3, 2026
20 checks passed
@graphite-app graphite-app bot deleted the fix/oxfmt-rwlock-perf branch February 3, 2026 13:04
@graphite-app graphite-app bot removed the 0-merge Merge with Graphite Merge Queue label Feb 3, 2026
camc314 added a commit that referenced this pull request Feb 10, 2026
# Oxlint
### 🚀 Features

- aef2af5 linter/unicorn: Add fixer for `unicorn/relative-url-style`
rule (#19186) (Mikhail Baev)
- 80eba6f linter/max-params: Support `countThis` option (#19175)
(camc314)
- e19bc45 linter/no-new-func: Improve rule diagnostic with note and
actionable help message (#19132) (Sean Gallen)
- e3dc5f6 linter/plugins: `RuleTester` test suggestions (#19104)
(overlookmotel)
- 6054249 linter/plugins: Add `recursive` option to `RuleTester`
(#19093) (overlookmotel)
- 27c241b linter/plugins: `RuleTester` test fixes (#19091)
(overlookmotel)
- 7318275 linter/new-cap: Tighten diagnostic spans and add help text
(#19131) (camchenry)
- ac2b16b linter: Improve `no-misleading-character-class` diagnostic
spans (#19109) (Sysix)
- 7be8613 linter: Move `no-misleading-chracter-class` to `correctness`
(#19006) (Sysix)
- 87a920d ci: Add riscv64 and s390x napi targets for oxlint and oxfmt
(#19039) (Boshen)
- ee2925b oxlint/lsp: Enable JS plugins (#18834) (overlookmotel)
- 533013d linter/unicorn: Implement suggestion for
`unicorn/prefer-dom-node-dataset` (#19051) (Mikhail Baev)
- 384abae linter/oxc/no-async-endpoint-handlers: Improve diagnostic
message (#19001) (camc314)
- d35ece3 linter/array-callback-return: Improve diagnostic hints for
some cases (#18993) (camc314)
- dd0f754 linter/array-callback-return: Improve diagnostic message for
`forEach` case (#18992) (camc314)
- e2d28fe linter/plugins: Implement suggestions (#18963) (overlookmotel)
- a398152 linter: Promote the `eslint/no-iterator` rule to correctness,
which makes it a default rule (#18915) (connorshea)
- bb1eb97 linter: Improve diagnostic message for circular configs
(#18947) (camc314)
- 3184f36 linter: Ban relative js plugin specifiers in js extends config
(#18944) (camc314)
- 749972f linter: Validate dynamic config extends shape (#18943)
(camc314)
- b270739 linter: Support extends in oxlint.config.ts (#18942) (camc314)
- 6024ddf linter: Implement suggestion for
`unicorn/prefer-reflect-apply` (#18932) (Mikhail Baev)
- b06b3a9 linter: Implement `typescript/consistent-type-assertions`
(#18869) (Bazyli Brzóska)
- 9fd3bd6 linter/plugins: Add `@oxlint/plugins` NPM package (#18824)
(overlookmotel)
- 5ee7b2f linter/vitest: Implements `prefer-expect-type-of` rule
(#17957) (Said Atrahouch)
- a7b360a linter/unicorn: Implement `unicorn/relative-url-style` rule
(#18857) (Mikhail Baev)
- 9788a96 oxlint,oxfmt: Add more native builds (#18853) (Boshen)
- b23395a linter: Enforce exporting an object with `defineConfig`
(#18858) (camc314)

### 🐛 Bug Fixes

- 7800fc5 linter/prefer-event-target: Ignore EventEmitter imported from
packages (#19188) (camc314)
- 03b2955 linter/typescript/ban-types: Mark rule as deprecated (#19179)
(camc314)
- a5b8766 oxlint/lsp: Disable rule for this line should not be preferred
(#19083) (Sysix)
- e08157e linter/jsx-filename-extension: Include filename in as-needed
diagnostic (#19172) (camc314)
- 1773acb oxlint: Re-generate envs (#19169) (camc314)
- 51c3fc8 linter/no-array-for-each: Skip `Effect.forEach` calls (#19127)
(camc314)
- 825f148 linter/plugins: `RuleTester` consider adjacent fixes as
overlapping in ESLint compat mode (#19094) (overlookmotel)
- ecd2456 linter/plugins: Handle fix with -1 offsets in file with BOM
(#19092) (overlookmotel)
- 5969d26 linter/no-array-sort: Avoid false positives for effect
Chunk.sort (#19125) (camc314)
- de10f04 linter: `no-misleading-character-class`: do not skip reporting
on first invalid sequence of the checking group (#19111) (Sysix)
- 8c0ce78 linter: Scope no-misleading-character-class sequences to
single character class (#19108) (copilot-swe-agent)
- 879e3a0 linter: `no-misleading-character-class`: split sequences on
all `CharacterSet` (#19107) (Sysix)
- 2ad33cc oxlint/lsp: Search parent directories for root oxlint config
(#19062) (copilot-swe-agent)
- f969d5e linter/prefer-dom-node-dataset: Address some edge cases in the
fixer (#19065) (camc314)
- ed759d1 linter/plugins: Fix error messages for invalid suggestions
(#19059) (overlookmotel)
- 34851a7 linter/plugins: Error not panic if invalid fix range (#19058)
(overlookmotel)
- 4823b58 linter/plugins: Fix fixes in files with BOM (#19056)
(overlookmotel)
- 2ef405e linter/no-map-spread: Improve actionability of error message
(#19007) (Artyom Alekseevich)
- 56c086b parser: Add modifier ordering validation (TS1029) (#19024)
(Boshen)
- 6067a49 linter/jsdoc: False positive in `check-tag-names` for `@` in
email addresses and npm scopes (#19021) (Boshen)
- 6d46ed9 linter/capitalized-comments: Ignore prettier and oxfmt
directives (#19008) (Artyom Alekseevich)
- a46c878 linter/react/no-array-index-key: Look for keys in expressions
(#18997) (camc314)
- 7d61704 linter/prefer-at: Skip autofix for `arguments` (#18991)
(camc314)
- 3ebae53 linter/preserve-caught-error: Skip traversing into nested
try/catch stmts (#18990) (camc314)
- e94d37e linter/react/no-unknown-property: Add missing `popover`
related props (#18953) (Christoph Nakazawa)
- 04b0d99 linter: Normalize relative paths with `./` prefix in
overrides. (#18954) (connorshea)
- 57917ee parser: Parse decorators on rest parameters (#18938) (Boshen)
- 07742ea linter/prefer-as-const: Implement fixer for type annotation
(#18899) (camc314)
- d64bfdd linter/plugins: Ensure `after` hook always runs last in rule
converted for ESLint (#18904) (overlookmotel)
- ec39944 linter/jsx-a11y/no-distracting-elements: Support elements
option (#18892) (camc314)
- f609cb6 linter/prefer-expect-type-of: Handle computed elements in
fixer correctly (#18890) (camc314)
- ecf11e5 linter/dynamic-config: Set `ExternalPlugin.config_dir` to fix
js plugins loading (#18854) (camc314)
- 01b7838 linter/plugins: Do not destroy workspaces (#18833)
(overlookmotel)
- dc51d6b linter: Normalize paths slashes for snapshots on windows
(#18825) (camc314)
- dbfdc40 linter/bad-replace-all-args: Skip extracting flags from
conditional expressions (#18844) (camc314)

### ⚡ Performance

- ed8c054 oxc_str: Add precomputed hash to Ident for fast HashMap
lookups (#19143) (Boshen)
- 18f58bd oxlint/lsp: Transform unused disable directive directly to
DiagnosticReport (#19112) (Sysix)
- 4ce3772 linter: Remove pointless string cloning when combining
suggestions (#19075) (overlookmotel)
- c417bf5 linter: Avoid allocating `Vec` when compiling `PossibleFixes`
(#19074) (overlookmotel)
- adb2baa linter/plugins: Avoid allocation when rule provides single
suggestion (#19071) (overlookmotel)
- 2537924 semantic: Optimize scope resolution with fast paths and
inlining (#19029) (Boshen)

### 📚 Documentation

- 6e8ef38 linter/plugins: Correct and expand JSDoc comment for
`RuleTester` config (#19156) (overlookmotel)
- e7ec06a linter: Improve docs for `import/max-dependencies` rule.
(#19119) (connorshea)
- 367f730 linter/consistent-test-filename: Escape file names fixes
#19114 (#19123) (camc314)
- 8753a54 linter: Rewrite the docs for the `jsx-a11y/no-redundant-roles`
rule. (#19117) (connorshea)
- dd44b1a linter: Fix invalid directive in example code for
`import/no-nodejs-modules`. (#19115) (connorshea)
- 726e273 linter/plugins: Improve JSDoc comment for `DiagnosticReport`
(#19103) (overlookmotel)
- 9561e7f linter/plugins: Alter JS plugins example (#18900)
(overlookmotel)
- 501e3b6 linter: Regenerate `config.generated.ts` (#18897)
(overlookmotel)
- b425a0c linter: Document jsPlugins examples (#18671) (Cameron)
- df2b7fa linter: Expand settings example with reference to custom
plugins (#18670) (camc314)
# Oxfmt
### 💥 BREAKING CHANGES

- 856a01f formatter/sort_imports: [**BREAKING**] Replace prefix match
with glob pattern in `customGroups.elementNamePattern` (#19066)
(leaysgur)

### 🚀 Features

- 91e67f3 oxfmt/lsp: Do not refer `.gitignore` (#19206) (leaysgur)
- 23c0753 oxfmt: Better Tailwind CSS intergration (#19000) (Dunqing)
- 87a920d ci: Add riscv64 and s390x napi targets for oxlint and oxfmt
(#19039) (Boshen)
- 8536dce oxfmt: Support glob for CLI paths (#18976) (leaysgur)
- 6ee2d59 oxfmt: Use `oxc_formatter` in js-in-xxx part (#18373)
(leaysgur)
- 9788a96 oxlint,oxfmt: Add more native builds (#18853) (Boshen)

### 🐛 Bug Fixes

- 119348b oxfmt: Resolve relative -> absolute path for other usages
(#19207) (leaysgur)
- 5f4cf30 oxfmt: Fix relative -> absolute path resolution with
refactoring (#19202) (leaysgur)
- dc335d1 oxfmt: Temporarily disable the override for js-in-xxx (not
ready yet) (#19043) (leaysgur)
- 5ea5bda oxfmt: Handle `isSingleJsxExpressionStatementInMarkdown()`
check for js-in-md (#19042) (leaysgur)
- 5243307 formatter: Preserve numeric separators in number literals
(#19015) (Dunqing)
- 9b205b3 formatter: Fallback to formatting when package.json sorting
fails (#19097) (Boshen)
- b79c065 formatter: Preserve comment between callee and optional
chaining operator (#19020) (Dunqing)
- 01d1be1 formatter: Remove unnecessary parentheses for single-member
union types (#19018) (Dunqing)
- f5c7e75 formatter: Preserve parentheses around await with private
field access (#19014) (Dunqing)
- 5a75785 formatter: Preserve parentheses around nested sequence
expressions (#19013) (Dunqing)
- f39c96c oxfmt: Do not override `babel-ts` for now (#19030) (leaysgur)
- 0ef11bb formatter: Add space before type annotation with leading
comment (#19012) (Dunqing)
- cc232e1 formatter: Keep spread with callback on same line (#18999)
(Dunqing)
- ef5bfab oxfmt: Workaround Node.js ThreadsafeFunction cleanup race
condition (#18980) (Boshen)
- d53f5c4 formatter: Require string first arg in test calls (#18935)
(Dunqing)
- 57917ee parser: Parse decorators on rest parameters (#18938) (Boshen)
- 2db8c05 formatter: Avoid breaking generic call assignments (#18933)
(Dunqing)
- 1e023e1 formatter: Preserve trailing comma in mts/cts arrow generics
(#18928) (Dunqing)
- 7c4e558 formatter/detect_code_removal: Do not count `TemplateLiteral`
content (#18848) (leaysgur)

### ⚡ Performance

- 467724f oxfmt: Collect glob paths in parallel (#19209) (leaysgur)
- 61e0efa oxfmt: Use RwLock instead of Mutex for TSFN handles (#18888)
(Boshen)

Co-authored-by: camc314 <[email protected]>
owjs3901 pushed a commit to owjs3901/oxc that referenced this pull request Feb 11, 2026
# Oxlint
### 🚀 Features

- aef2af5 linter/unicorn: Add fixer for `unicorn/relative-url-style`
rule (oxc-project#19186) (Mikhail Baev)
- 80eba6f linter/max-params: Support `countThis` option (oxc-project#19175)
(camc314)
- e19bc45 linter/no-new-func: Improve rule diagnostic with note and
actionable help message (oxc-project#19132) (Sean Gallen)
- e3dc5f6 linter/plugins: `RuleTester` test suggestions (oxc-project#19104)
(overlookmotel)
- 6054249 linter/plugins: Add `recursive` option to `RuleTester`
(oxc-project#19093) (overlookmotel)
- 27c241b linter/plugins: `RuleTester` test fixes (oxc-project#19091)
(overlookmotel)
- 7318275 linter/new-cap: Tighten diagnostic spans and add help text
(oxc-project#19131) (camchenry)
- ac2b16b linter: Improve `no-misleading-character-class` diagnostic
spans (oxc-project#19109) (Sysix)
- 7be8613 linter: Move `no-misleading-chracter-class` to `correctness`
(oxc-project#19006) (Sysix)
- 87a920d ci: Add riscv64 and s390x napi targets for oxlint and oxfmt
(oxc-project#19039) (Boshen)
- ee2925b oxlint/lsp: Enable JS plugins (oxc-project#18834) (overlookmotel)
- 533013d linter/unicorn: Implement suggestion for
`unicorn/prefer-dom-node-dataset` (oxc-project#19051) (Mikhail Baev)
- 384abae linter/oxc/no-async-endpoint-handlers: Improve diagnostic
message (oxc-project#19001) (camc314)
- d35ece3 linter/array-callback-return: Improve diagnostic hints for
some cases (oxc-project#18993) (camc314)
- dd0f754 linter/array-callback-return: Improve diagnostic message for
`forEach` case (oxc-project#18992) (camc314)
- e2d28fe linter/plugins: Implement suggestions (oxc-project#18963) (overlookmotel)
- a398152 linter: Promote the `eslint/no-iterator` rule to correctness,
which makes it a default rule (oxc-project#18915) (connorshea)
- bb1eb97 linter: Improve diagnostic message for circular configs
(oxc-project#18947) (camc314)
- 3184f36 linter: Ban relative js plugin specifiers in js extends config
(oxc-project#18944) (camc314)
- 749972f linter: Validate dynamic config extends shape (oxc-project#18943)
(camc314)
- b270739 linter: Support extends in oxlint.config.ts (oxc-project#18942) (camc314)
- 6024ddf linter: Implement suggestion for
`unicorn/prefer-reflect-apply` (oxc-project#18932) (Mikhail Baev)
- b06b3a9 linter: Implement `typescript/consistent-type-assertions`
(oxc-project#18869) (Bazyli Brzóska)
- 9fd3bd6 linter/plugins: Add `@oxlint/plugins` NPM package (oxc-project#18824)
(overlookmotel)
- 5ee7b2f linter/vitest: Implements `prefer-expect-type-of` rule
(oxc-project#17957) (Said Atrahouch)
- a7b360a linter/unicorn: Implement `unicorn/relative-url-style` rule
(oxc-project#18857) (Mikhail Baev)
- 9788a96 oxlint,oxfmt: Add more native builds (oxc-project#18853) (Boshen)
- b23395a linter: Enforce exporting an object with `defineConfig`
(oxc-project#18858) (camc314)

### 🐛 Bug Fixes

- 7800fc5 linter/prefer-event-target: Ignore EventEmitter imported from
packages (oxc-project#19188) (camc314)
- 03b2955 linter/typescript/ban-types: Mark rule as deprecated (oxc-project#19179)
(camc314)
- a5b8766 oxlint/lsp: Disable rule for this line should not be preferred
(oxc-project#19083) (Sysix)
- e08157e linter/jsx-filename-extension: Include filename in as-needed
diagnostic (oxc-project#19172) (camc314)
- 1773acb oxlint: Re-generate envs (oxc-project#19169) (camc314)
- 51c3fc8 linter/no-array-for-each: Skip `Effect.forEach` calls (oxc-project#19127)
(camc314)
- 825f148 linter/plugins: `RuleTester` consider adjacent fixes as
overlapping in ESLint compat mode (oxc-project#19094) (overlookmotel)
- ecd2456 linter/plugins: Handle fix with -1 offsets in file with BOM
(oxc-project#19092) (overlookmotel)
- 5969d26 linter/no-array-sort: Avoid false positives for effect
Chunk.sort (oxc-project#19125) (camc314)
- de10f04 linter: `no-misleading-character-class`: do not skip reporting
on first invalid sequence of the checking group (oxc-project#19111) (Sysix)
- 8c0ce78 linter: Scope no-misleading-character-class sequences to
single character class (oxc-project#19108) (copilot-swe-agent)
- 879e3a0 linter: `no-misleading-character-class`: split sequences on
all `CharacterSet` (oxc-project#19107) (Sysix)
- 2ad33cc oxlint/lsp: Search parent directories for root oxlint config
(oxc-project#19062) (copilot-swe-agent)
- f969d5e linter/prefer-dom-node-dataset: Address some edge cases in the
fixer (oxc-project#19065) (camc314)
- ed759d1 linter/plugins: Fix error messages for invalid suggestions
(oxc-project#19059) (overlookmotel)
- 34851a7 linter/plugins: Error not panic if invalid fix range (oxc-project#19058)
(overlookmotel)
- 4823b58 linter/plugins: Fix fixes in files with BOM (oxc-project#19056)
(overlookmotel)
- 2ef405e linter/no-map-spread: Improve actionability of error message
(oxc-project#19007) (Artyom Alekseevich)
- 56c086b parser: Add modifier ordering validation (TS1029) (oxc-project#19024)
(Boshen)
- 6067a49 linter/jsdoc: False positive in `check-tag-names` for `@` in
email addresses and npm scopes (oxc-project#19021) (Boshen)
- 6d46ed9 linter/capitalized-comments: Ignore prettier and oxfmt
directives (oxc-project#19008) (Artyom Alekseevich)
- a46c878 linter/react/no-array-index-key: Look for keys in expressions
(oxc-project#18997) (camc314)
- 7d61704 linter/prefer-at: Skip autofix for `arguments` (oxc-project#18991)
(camc314)
- 3ebae53 linter/preserve-caught-error: Skip traversing into nested
try/catch stmts (oxc-project#18990) (camc314)
- e94d37e linter/react/no-unknown-property: Add missing `popover`
related props (oxc-project#18953) (Christoph Nakazawa)
- 04b0d99 linter: Normalize relative paths with `./` prefix in
overrides. (oxc-project#18954) (connorshea)
- 57917ee parser: Parse decorators on rest parameters (oxc-project#18938) (Boshen)
- 07742ea linter/prefer-as-const: Implement fixer for type annotation
(oxc-project#18899) (camc314)
- d64bfdd linter/plugins: Ensure `after` hook always runs last in rule
converted for ESLint (oxc-project#18904) (overlookmotel)
- ec39944 linter/jsx-a11y/no-distracting-elements: Support elements
option (oxc-project#18892) (camc314)
- f609cb6 linter/prefer-expect-type-of: Handle computed elements in
fixer correctly (oxc-project#18890) (camc314)
- ecf11e5 linter/dynamic-config: Set `ExternalPlugin.config_dir` to fix
js plugins loading (oxc-project#18854) (camc314)
- 01b7838 linter/plugins: Do not destroy workspaces (oxc-project#18833)
(overlookmotel)
- dc51d6b linter: Normalize paths slashes for snapshots on windows
(oxc-project#18825) (camc314)
- dbfdc40 linter/bad-replace-all-args: Skip extracting flags from
conditional expressions (oxc-project#18844) (camc314)

### ⚡ Performance

- ed8c054 oxc_str: Add precomputed hash to Ident for fast HashMap
lookups (oxc-project#19143) (Boshen)
- 18f58bd oxlint/lsp: Transform unused disable directive directly to
DiagnosticReport (oxc-project#19112) (Sysix)
- 4ce3772 linter: Remove pointless string cloning when combining
suggestions (oxc-project#19075) (overlookmotel)
- c417bf5 linter: Avoid allocating `Vec` when compiling `PossibleFixes`
(oxc-project#19074) (overlookmotel)
- adb2baa linter/plugins: Avoid allocation when rule provides single
suggestion (oxc-project#19071) (overlookmotel)
- 2537924 semantic: Optimize scope resolution with fast paths and
inlining (oxc-project#19029) (Boshen)

### 📚 Documentation

- 6e8ef38 linter/plugins: Correct and expand JSDoc comment for
`RuleTester` config (oxc-project#19156) (overlookmotel)
- e7ec06a linter: Improve docs for `import/max-dependencies` rule.
(oxc-project#19119) (connorshea)
- 367f730 linter/consistent-test-filename: Escape file names fixes
oxc-project#19114 (oxc-project#19123) (camc314)
- 8753a54 linter: Rewrite the docs for the `jsx-a11y/no-redundant-roles`
rule. (oxc-project#19117) (connorshea)
- dd44b1a linter: Fix invalid directive in example code for
`import/no-nodejs-modules`. (oxc-project#19115) (connorshea)
- 726e273 linter/plugins: Improve JSDoc comment for `DiagnosticReport`
(oxc-project#19103) (overlookmotel)
- 9561e7f linter/plugins: Alter JS plugins example (oxc-project#18900)
(overlookmotel)
- 501e3b6 linter: Regenerate `config.generated.ts` (oxc-project#18897)
(overlookmotel)
- b425a0c linter: Document jsPlugins examples (oxc-project#18671) (Cameron)
- df2b7fa linter: Expand settings example with reference to custom
plugins (oxc-project#18670) (camc314)
# Oxfmt
### 💥 BREAKING CHANGES

- 856a01f formatter/sort_imports: [**BREAKING**] Replace prefix match
with glob pattern in `customGroups.elementNamePattern` (oxc-project#19066)
(leaysgur)

### 🚀 Features

- 91e67f3 oxfmt/lsp: Do not refer `.gitignore` (oxc-project#19206) (leaysgur)
- 23c0753 oxfmt: Better Tailwind CSS intergration (oxc-project#19000) (Dunqing)
- 87a920d ci: Add riscv64 and s390x napi targets for oxlint and oxfmt
(oxc-project#19039) (Boshen)
- 8536dce oxfmt: Support glob for CLI paths (oxc-project#18976) (leaysgur)
- 6ee2d59 oxfmt: Use `oxc_formatter` in js-in-xxx part (oxc-project#18373)
(leaysgur)
- 9788a96 oxlint,oxfmt: Add more native builds (oxc-project#18853) (Boshen)

### 🐛 Bug Fixes

- 119348b oxfmt: Resolve relative -> absolute path for other usages
(oxc-project#19207) (leaysgur)
- 5f4cf30 oxfmt: Fix relative -> absolute path resolution with
refactoring (oxc-project#19202) (leaysgur)
- dc335d1 oxfmt: Temporarily disable the override for js-in-xxx (not
ready yet) (oxc-project#19043) (leaysgur)
- 5ea5bda oxfmt: Handle `isSingleJsxExpressionStatementInMarkdown()`
check for js-in-md (oxc-project#19042) (leaysgur)
- 5243307 formatter: Preserve numeric separators in number literals
(oxc-project#19015) (Dunqing)
- 9b205b3 formatter: Fallback to formatting when package.json sorting
fails (oxc-project#19097) (Boshen)
- b79c065 formatter: Preserve comment between callee and optional
chaining operator (oxc-project#19020) (Dunqing)
- 01d1be1 formatter: Remove unnecessary parentheses for single-member
union types (oxc-project#19018) (Dunqing)
- f5c7e75 formatter: Preserve parentheses around await with private
field access (oxc-project#19014) (Dunqing)
- 5a75785 formatter: Preserve parentheses around nested sequence
expressions (oxc-project#19013) (Dunqing)
- f39c96c oxfmt: Do not override `babel-ts` for now (oxc-project#19030) (leaysgur)
- 0ef11bb formatter: Add space before type annotation with leading
comment (oxc-project#19012) (Dunqing)
- cc232e1 formatter: Keep spread with callback on same line (oxc-project#18999)
(Dunqing)
- ef5bfab oxfmt: Workaround Node.js ThreadsafeFunction cleanup race
condition (oxc-project#18980) (Boshen)
- d53f5c4 formatter: Require string first arg in test calls (oxc-project#18935)
(Dunqing)
- 57917ee parser: Parse decorators on rest parameters (oxc-project#18938) (Boshen)
- 2db8c05 formatter: Avoid breaking generic call assignments (oxc-project#18933)
(Dunqing)
- 1e023e1 formatter: Preserve trailing comma in mts/cts arrow generics
(oxc-project#18928) (Dunqing)
- 7c4e558 formatter/detect_code_removal: Do not count `TemplateLiteral`
content (oxc-project#18848) (leaysgur)

### ⚡ Performance

- 467724f oxfmt: Collect glob paths in parallel (oxc-project#19209) (leaysgur)
- 61e0efa oxfmt: Use RwLock instead of Mutex for TSFN handles (oxc-project#18888)
(Boshen)

Co-authored-by: camc314 <[email protected]>
OskarLebuda pushed a commit to OskarLebuda/oxc that referenced this pull request Feb 17, 2026
# Oxlint
### 🚀 Features

- aef2af5 linter/unicorn: Add fixer for `unicorn/relative-url-style`
rule (oxc-project#19186) (Mikhail Baev)
- 80eba6f linter/max-params: Support `countThis` option (oxc-project#19175)
(camc314)
- e19bc45 linter/no-new-func: Improve rule diagnostic with note and
actionable help message (oxc-project#19132) (Sean Gallen)
- e3dc5f6 linter/plugins: `RuleTester` test suggestions (oxc-project#19104)
(overlookmotel)
- 6054249 linter/plugins: Add `recursive` option to `RuleTester`
(oxc-project#19093) (overlookmotel)
- 27c241b linter/plugins: `RuleTester` test fixes (oxc-project#19091)
(overlookmotel)
- 7318275 linter/new-cap: Tighten diagnostic spans and add help text
(oxc-project#19131) (camchenry)
- ac2b16b linter: Improve `no-misleading-character-class` diagnostic
spans (oxc-project#19109) (Sysix)
- 7be8613 linter: Move `no-misleading-chracter-class` to `correctness`
(oxc-project#19006) (Sysix)
- 87a920d ci: Add riscv64 and s390x napi targets for oxlint and oxfmt
(oxc-project#19039) (Boshen)
- ee2925b oxlint/lsp: Enable JS plugins (oxc-project#18834) (overlookmotel)
- 533013d linter/unicorn: Implement suggestion for
`unicorn/prefer-dom-node-dataset` (oxc-project#19051) (Mikhail Baev)
- 384abae linter/oxc/no-async-endpoint-handlers: Improve diagnostic
message (oxc-project#19001) (camc314)
- d35ece3 linter/array-callback-return: Improve diagnostic hints for
some cases (oxc-project#18993) (camc314)
- dd0f754 linter/array-callback-return: Improve diagnostic message for
`forEach` case (oxc-project#18992) (camc314)
- e2d28fe linter/plugins: Implement suggestions (oxc-project#18963) (overlookmotel)
- a398152 linter: Promote the `eslint/no-iterator` rule to correctness,
which makes it a default rule (oxc-project#18915) (connorshea)
- bb1eb97 linter: Improve diagnostic message for circular configs
(oxc-project#18947) (camc314)
- 3184f36 linter: Ban relative js plugin specifiers in js extends config
(oxc-project#18944) (camc314)
- 749972f linter: Validate dynamic config extends shape (oxc-project#18943)
(camc314)
- b270739 linter: Support extends in oxlint.config.ts (oxc-project#18942) (camc314)
- 6024ddf linter: Implement suggestion for
`unicorn/prefer-reflect-apply` (oxc-project#18932) (Mikhail Baev)
- b06b3a9 linter: Implement `typescript/consistent-type-assertions`
(oxc-project#18869) (Bazyli Brzóska)
- 9fd3bd6 linter/plugins: Add `@oxlint/plugins` NPM package (oxc-project#18824)
(overlookmotel)
- 5ee7b2f linter/vitest: Implements `prefer-expect-type-of` rule
(oxc-project#17957) (Said Atrahouch)
- a7b360a linter/unicorn: Implement `unicorn/relative-url-style` rule
(oxc-project#18857) (Mikhail Baev)
- 9788a96 oxlint,oxfmt: Add more native builds (oxc-project#18853) (Boshen)
- b23395a linter: Enforce exporting an object with `defineConfig`
(oxc-project#18858) (camc314)

### 🐛 Bug Fixes

- 7800fc5 linter/prefer-event-target: Ignore EventEmitter imported from
packages (oxc-project#19188) (camc314)
- 03b2955 linter/typescript/ban-types: Mark rule as deprecated (oxc-project#19179)
(camc314)
- a5b8766 oxlint/lsp: Disable rule for this line should not be preferred
(oxc-project#19083) (Sysix)
- e08157e linter/jsx-filename-extension: Include filename in as-needed
diagnostic (oxc-project#19172) (camc314)
- 1773acb oxlint: Re-generate envs (oxc-project#19169) (camc314)
- 51c3fc8 linter/no-array-for-each: Skip `Effect.forEach` calls (oxc-project#19127)
(camc314)
- 825f148 linter/plugins: `RuleTester` consider adjacent fixes as
overlapping in ESLint compat mode (oxc-project#19094) (overlookmotel)
- ecd2456 linter/plugins: Handle fix with -1 offsets in file with BOM
(oxc-project#19092) (overlookmotel)
- 5969d26 linter/no-array-sort: Avoid false positives for effect
Chunk.sort (oxc-project#19125) (camc314)
- de10f04 linter: `no-misleading-character-class`: do not skip reporting
on first invalid sequence of the checking group (oxc-project#19111) (Sysix)
- 8c0ce78 linter: Scope no-misleading-character-class sequences to
single character class (oxc-project#19108) (copilot-swe-agent)
- 879e3a0 linter: `no-misleading-character-class`: split sequences on
all `CharacterSet` (oxc-project#19107) (Sysix)
- 2ad33cc oxlint/lsp: Search parent directories for root oxlint config
(oxc-project#19062) (copilot-swe-agent)
- f969d5e linter/prefer-dom-node-dataset: Address some edge cases in the
fixer (oxc-project#19065) (camc314)
- ed759d1 linter/plugins: Fix error messages for invalid suggestions
(oxc-project#19059) (overlookmotel)
- 34851a7 linter/plugins: Error not panic if invalid fix range (oxc-project#19058)
(overlookmotel)
- 4823b58 linter/plugins: Fix fixes in files with BOM (oxc-project#19056)
(overlookmotel)
- 2ef405e linter/no-map-spread: Improve actionability of error message
(oxc-project#19007) (Artyom Alekseevich)
- 56c086b parser: Add modifier ordering validation (TS1029) (oxc-project#19024)
(Boshen)
- 6067a49 linter/jsdoc: False positive in `check-tag-names` for `@` in
email addresses and npm scopes (oxc-project#19021) (Boshen)
- 6d46ed9 linter/capitalized-comments: Ignore prettier and oxfmt
directives (oxc-project#19008) (Artyom Alekseevich)
- a46c878 linter/react/no-array-index-key: Look for keys in expressions
(oxc-project#18997) (camc314)
- 7d61704 linter/prefer-at: Skip autofix for `arguments` (oxc-project#18991)
(camc314)
- 3ebae53 linter/preserve-caught-error: Skip traversing into nested
try/catch stmts (oxc-project#18990) (camc314)
- e94d37e linter/react/no-unknown-property: Add missing `popover`
related props (oxc-project#18953) (Christoph Nakazawa)
- 04b0d99 linter: Normalize relative paths with `./` prefix in
overrides. (oxc-project#18954) (connorshea)
- 57917ee parser: Parse decorators on rest parameters (oxc-project#18938) (Boshen)
- 07742ea linter/prefer-as-const: Implement fixer for type annotation
(oxc-project#18899) (camc314)
- d64bfdd linter/plugins: Ensure `after` hook always runs last in rule
converted for ESLint (oxc-project#18904) (overlookmotel)
- ec39944 linter/jsx-a11y/no-distracting-elements: Support elements
option (oxc-project#18892) (camc314)
- f609cb6 linter/prefer-expect-type-of: Handle computed elements in
fixer correctly (oxc-project#18890) (camc314)
- ecf11e5 linter/dynamic-config: Set `ExternalPlugin.config_dir` to fix
js plugins loading (oxc-project#18854) (camc314)
- 01b7838 linter/plugins: Do not destroy workspaces (oxc-project#18833)
(overlookmotel)
- dc51d6b linter: Normalize paths slashes for snapshots on windows
(oxc-project#18825) (camc314)
- dbfdc40 linter/bad-replace-all-args: Skip extracting flags from
conditional expressions (oxc-project#18844) (camc314)

### ⚡ Performance

- ed8c054 oxc_str: Add precomputed hash to Ident for fast HashMap
lookups (oxc-project#19143) (Boshen)
- 18f58bd oxlint/lsp: Transform unused disable directive directly to
DiagnosticReport (oxc-project#19112) (Sysix)
- 4ce3772 linter: Remove pointless string cloning when combining
suggestions (oxc-project#19075) (overlookmotel)
- c417bf5 linter: Avoid allocating `Vec` when compiling `PossibleFixes`
(oxc-project#19074) (overlookmotel)
- adb2baa linter/plugins: Avoid allocation when rule provides single
suggestion (oxc-project#19071) (overlookmotel)
- 2537924 semantic: Optimize scope resolution with fast paths and
inlining (oxc-project#19029) (Boshen)

### 📚 Documentation

- 6e8ef38 linter/plugins: Correct and expand JSDoc comment for
`RuleTester` config (oxc-project#19156) (overlookmotel)
- e7ec06a linter: Improve docs for `import/max-dependencies` rule.
(oxc-project#19119) (connorshea)
- 367f730 linter/consistent-test-filename: Escape file names fixes
oxc-project#19114 (oxc-project#19123) (camc314)
- 8753a54 linter: Rewrite the docs for the `jsx-a11y/no-redundant-roles`
rule. (oxc-project#19117) (connorshea)
- dd44b1a linter: Fix invalid directive in example code for
`import/no-nodejs-modules`. (oxc-project#19115) (connorshea)
- 726e273 linter/plugins: Improve JSDoc comment for `DiagnosticReport`
(oxc-project#19103) (overlookmotel)
- 9561e7f linter/plugins: Alter JS plugins example (oxc-project#18900)
(overlookmotel)
- 501e3b6 linter: Regenerate `config.generated.ts` (oxc-project#18897)
(overlookmotel)
- b425a0c linter: Document jsPlugins examples (oxc-project#18671) (Cameron)
- df2b7fa linter: Expand settings example with reference to custom
plugins (oxc-project#18670) (camc314)
# Oxfmt
### 💥 BREAKING CHANGES

- 856a01f formatter/sort_imports: [**BREAKING**] Replace prefix match
with glob pattern in `customGroups.elementNamePattern` (oxc-project#19066)
(leaysgur)

### 🚀 Features

- 91e67f3 oxfmt/lsp: Do not refer `.gitignore` (oxc-project#19206) (leaysgur)
- 23c0753 oxfmt: Better Tailwind CSS intergration (oxc-project#19000) (Dunqing)
- 87a920d ci: Add riscv64 and s390x napi targets for oxlint and oxfmt
(oxc-project#19039) (Boshen)
- 8536dce oxfmt: Support glob for CLI paths (oxc-project#18976) (leaysgur)
- 6ee2d59 oxfmt: Use `oxc_formatter` in js-in-xxx part (oxc-project#18373)
(leaysgur)
- 9788a96 oxlint,oxfmt: Add more native builds (oxc-project#18853) (Boshen)

### 🐛 Bug Fixes

- 119348b oxfmt: Resolve relative -> absolute path for other usages
(oxc-project#19207) (leaysgur)
- 5f4cf30 oxfmt: Fix relative -> absolute path resolution with
refactoring (oxc-project#19202) (leaysgur)
- dc335d1 oxfmt: Temporarily disable the override for js-in-xxx (not
ready yet) (oxc-project#19043) (leaysgur)
- 5ea5bda oxfmt: Handle `isSingleJsxExpressionStatementInMarkdown()`
check for js-in-md (oxc-project#19042) (leaysgur)
- 5243307 formatter: Preserve numeric separators in number literals
(oxc-project#19015) (Dunqing)
- 9b205b3 formatter: Fallback to formatting when package.json sorting
fails (oxc-project#19097) (Boshen)
- b79c065 formatter: Preserve comment between callee and optional
chaining operator (oxc-project#19020) (Dunqing)
- 01d1be1 formatter: Remove unnecessary parentheses for single-member
union types (oxc-project#19018) (Dunqing)
- f5c7e75 formatter: Preserve parentheses around await with private
field access (oxc-project#19014) (Dunqing)
- 5a75785 formatter: Preserve parentheses around nested sequence
expressions (oxc-project#19013) (Dunqing)
- f39c96c oxfmt: Do not override `babel-ts` for now (oxc-project#19030) (leaysgur)
- 0ef11bb formatter: Add space before type annotation with leading
comment (oxc-project#19012) (Dunqing)
- cc232e1 formatter: Keep spread with callback on same line (oxc-project#18999)
(Dunqing)
- ef5bfab oxfmt: Workaround Node.js ThreadsafeFunction cleanup race
condition (oxc-project#18980) (Boshen)
- d53f5c4 formatter: Require string first arg in test calls (oxc-project#18935)
(Dunqing)
- 57917ee parser: Parse decorators on rest parameters (oxc-project#18938) (Boshen)
- 2db8c05 formatter: Avoid breaking generic call assignments (oxc-project#18933)
(Dunqing)
- 1e023e1 formatter: Preserve trailing comma in mts/cts arrow generics
(oxc-project#18928) (Dunqing)
- 7c4e558 formatter/detect_code_removal: Do not count `TemplateLiteral`
content (oxc-project#18848) (leaysgur)

### ⚡ Performance

- 467724f oxfmt: Collect glob paths in parallel (oxc-project#19209) (leaysgur)
- 61e0efa oxfmt: Use RwLock instead of Mutex for TSFN handles (oxc-project#18888)
(Boshen)

Co-authored-by: camc314 <[email protected]>
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oxfmt: Investigate perf regression by #18723

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