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perf(linter/plugins): apply replace globals TSDown plugin to JS files#20305

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om/03-12-perf_linter_plugins_apply_replace_globals_tsdown_plugin_to_js_files
Mar 12, 2026
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perf(linter/plugins): apply replace globals TSDown plugin to JS files#20305
graphite-app[bot] merged 1 commit intomainfrom
om/03-12-perf_linter_plugins_apply_replace_globals_tsdown_plugin_to_js_files

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@overlookmotel overlookmotel commented Mar 12, 2026

TSDown build uses a custom plugin to replace global property lookups e.g. Object.assign with top level vars e.g. const ObjectAssign = Object.assign;, and then replace the usages with those top-level vars.

The plugin was only applied to .ts files. Broaden the filter to include .js files too, so it applies to the large generated files deserialize.js and walk.js.

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overlookmotel commented Mar 12, 2026


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@github-actions github-actions bot added A-linter Area - Linter A-cli Area - CLI labels Mar 12, 2026
@github-actions github-actions bot added the C-performance Category - Solution not expected to change functional behavior, only performance label Mar 12, 2026
@overlookmotel overlookmotel marked this pull request as ready for review March 12, 2026 19:11
@overlookmotel overlookmotel requested a review from camc314 as a code owner March 12, 2026 19:11
Copilot AI review requested due to automatic review settings March 12, 2026 19:11
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Pull request overview

Broadens the TSDown replace-globals plugin filter to also apply to .js files (in addition to .ts), so generated JS files like deserialize.js and walk.js benefit from the same global-to-local-var optimization.

Changes:

  • Updated the regex filter in the replace-globals plugin from \.ts$ to \.[jt]s$ to match both .js and .ts files.

@overlookmotel overlookmotel added the 0-merge Merge with Graphite Merge Queue label Mar 12, 2026
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overlookmotel commented Mar 12, 2026

Merge activity

…#20305)

TSDown build uses a custom plugin to replace global property lookups e.g. `Object.assign` with top level vars e.g. `const ObjectAssign = Object.assign;`, and then replace the usages with those top-level vars.

The plugin was only applied to `.ts` files. Broaden the filter to include `.js` files too, so it applies to the large generated files `deserialize.js` and `walk.js`.
@graphite-app graphite-app bot force-pushed the om/03-12-refactor_linter_plugins_split_tsdown_plugins_into_separate_files branch from 1f54c53 to c6cbe42 Compare March 12, 2026 19:23
@graphite-app graphite-app bot force-pushed the om/03-12-perf_linter_plugins_apply_replace_globals_tsdown_plugin_to_js_files branch from aea465b to fe24afe Compare March 12, 2026 19:23
Base automatically changed from om/03-12-refactor_linter_plugins_split_tsdown_plugins_into_separate_files to main March 12, 2026 19:36
@graphite-app graphite-app bot removed the 0-merge Merge with Graphite Merge Queue label Mar 12, 2026
@graphite-app graphite-app bot merged commit fe24afe into main Mar 12, 2026
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@graphite-app graphite-app bot deleted the om/03-12-perf_linter_plugins_apply_replace_globals_tsdown_plugin_to_js_files branch March 12, 2026 19:37
camc314 pushed a commit that referenced this pull request Mar 16, 2026
# Oxlint
### 🚀 Features

- c95951f linter/plugins: Implement `sourceCode.markVariableAsUsed` (#20357) (overlookmotel)
- 7a2a7d0 linter: Implement `n/handle-callback-err` rule (#19616) (Mikhail Baev)

### 🐛 Bug Fixes

- f8fbd6e linter/plugins: Remove `hashbang` property from AST (#20365) (overlookmotel)
- 6eb5b01 linter/prefer-await-to-then: Ignore Promise static methods (#20347) (camc314)
- a4b61f7 linter: Remove `defineConfig` check (#20308) (camc314)
- 3ad7f53 linter/explicit-module-boundary-types: False positive with satisfies expr (#20309) (camc314)
- f547401 linter/no-unused-private-class-members: Treat switch discriminants as read (#20307) (camc314)
- 1c07b3b diagnostics: Handle `WouldBlock` in stdout writes to prevent panic (#20295) (Boshen)

### ⚡ Performance

- e4f7248 linter: Remove unnecessary clone of owned String in drain loop (#20388) (Boshen)
- 4a67f1d linter: Eliminate Vec allocation in disable directive matching (#20387) (Boshen)
- 618a598 linter/plugins: Add fast path for files with no comments (#20366) (overlookmotel)
- b0125c5 linter/plugins: Deserialize comments without AST (#20364) (overlookmotel)
- 9cd612f linter/plugins: Recycle comment objects (#20362) (overlookmotel)
- bf442f8 linter/plugins: Cheaper `Token` creation (#20360) (overlookmotel)
- 5474d0a semantic: V8-style walk-up reference resolution (#20292) (Boshen)
- 7946eba linter/plugins: Avoid arguments spread and temp array when merging (#20318) (overlookmotel)
- fc7cf8a linter/plugins: Pre-define less CFG merger functions (#20317) (overlookmotel)
- 3b9eb28 linter/plugins: Streamline getting/creating visit fn mergers (#20319) (overlookmotel)
- f04e850 linter/plugins: Inline binary search functions into call sites (#20312) (overlookmotel)
- fe24afe linter/plugins: Apply replace globals TSDown plugin to JS files (#20305) (overlookmotel)
- 77cdacc linter/plugins: Use array buffer views for tokens (#20301) (overlookmotel)
- 910c941 linter/plugins: Reorder branches in `getTokenByRangeStart` (#20296) (overlookmotel)
- af7674c linter/tokens: Avoid extra token value allocation (#20013) (camc314)

### 📚 Documentation

- 24490b5 linter: Improve formatting for 80ish rules' docs. (#20411) (connorshea)
- 3383523 linter: Improve `--tsconfig` flag docs (#20342) (camc314)
# Oxfmt
### 🚀 Features

- d22c443 oxfmt: Export `OxfmtConfig` type (#20275) (leaysgur)
- a11ecff oxfmt/lsp: Respect `angular` language id as `.component.html` file (#20242) (Sysix)

### 🐛 Bug Fixes

- ce65099 formatter: Preserve parentheses around as expression before private field access (#20419) (bab)
- f908742 oxfmt: Revert #20326 partially (#20413) (leaysgur)
- 4ef93ea formatter: Honor trailing ignore comments after list separators (#19925) (Andreas Lubbe)
- 68fb0d0 oxfmt: Skip vite.config.ts which fails to import (#20326) (leaysgur)
- 88ee826 oxfmt: Handle literalline for script-in-vue (#20130) (leaysgur)
- 1c07b3b diagnostics: Handle `WouldBlock` in stdout writes to prevent panic (#20295) (Boshen)

Co-authored-by: Boshen <1430279+Boshen@users.noreply.github.com>
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