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feat(linter/plugins): implement SourceCode#getFirstToken()#16002

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overlookmotel merged 1 commit intooxc-project:mainfrom
lilnasy:feat/linter/token-methods/getFirstToken
Nov 23, 2025
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feat(linter/plugins): implement SourceCode#getFirstToken()#16002
overlookmotel merged 1 commit intooxc-project:mainfrom
lilnasy:feat/linter/token-methods/getFirstToken

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@lilnasy lilnasy commented Nov 23, 2025

Copilot AI review requested due to automatic review settings November 23, 2025 19:48
@lilnasy lilnasy requested a review from camc314 as a code owner November 23, 2025 19:48
@github-actions github-actions bot added A-linter Area - Linter A-cli Area - CLI A-linter-plugins Area - Linter JS plugins C-enhancement Category - New feature or request labels Nov 23, 2025
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Pull request overview

This PR implements the getFirstToken() method in the ESLint plugin source code system, part of ongoing work to achieve feature parity with ESLint's SourceCode API.

Key Changes

  • Implemented getFirstToken() with support for skip, filter, and includeComments options using binary search
  • Added comprehensive test suite with 14 test cases covering various scenarios including edge cases
  • Added imports for future token methods to prevent linter warnings

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File Description
apps/oxlint/src-js/plugins/tokens.ts Implements getFirstToken() with binary search algorithm, filtering, and skip logic
apps/oxlint/test/tokens.test.ts Adds comprehensive test coverage for getFirstToken() and stub references for future methods

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@lilnasy lilnasy force-pushed the feat/linter/token-methods/getFirstToken branch from 381962a to 1b22c12 Compare November 23, 2025 20:06
@overlookmotel overlookmotel self-assigned this Nov 23, 2025
@lilnasy lilnasy force-pushed the feat/linter/token-methods/getFirstToken branch from 1b22c12 to faeae59 Compare November 23, 2025 20:35
@overlookmotel overlookmotel force-pushed the feat/linter/token-methods/getFirstToken branch from faeae59 to 3996888 Compare November 23, 2025 20:45
@lilnasy lilnasy force-pushed the feat/linter/token-methods/getFirstToken branch from 3996888 to 9be81a7 Compare November 23, 2025 20:57
@lilnasy lilnasy force-pushed the feat/linter/token-methods/getFirstToken branch from 9be81a7 to 9e075cf Compare November 23, 2025 21:03
@overlookmotel overlookmotel merged commit 9e61beb into oxc-project:main Nov 23, 2025
17 checks passed
@lilnasy lilnasy deleted the feat/linter/token-methods/getFirstToken branch November 23, 2025 21:12
overlookmotel added a commit that referenced this pull request Nov 23, 2025
- Follow up to review comment in
#16002 (comment).
- We were originally using `assert` because it was a direct analogue to
`eslint` testing, made migrating their tests slightly easier.

---------

Co-authored-by: overlookmotel <theoverlookmotel@gmail.com>
overlookmotel added a commit that referenced this pull request Nov 24, 2025
# Oxlint
### 💥 BREAKING CHANGES

- cbb27fd ast: [**BREAKING**] Add `TSGlobalDeclaration` type (#15712)
(overlookmotel)

### 🚀 Features

- 72660f7 linter: Support auto generate config document for tuple lint
option (#15904) (Duc Nghiem Xuan)
- 0c1f82b linter/plugins: Add `tokens` property to `Program` (#16020)
(overlookmotel)
- 9e61beb linter/plugins: Implement `SourceCode#getFirstToken()`
(#16002) (Arsh)
- 9a548dd linter/plugins: Implement `SourceCode#getLastTokens()`
(#16000) (Arsh)
- 0b6cb11 linter/plugins: Implement `SourceCode#getFirstTokens()`
(#15976) (Arsh)
- 166781e linter/plugins: Implement `SourceCode#getTokenAfter()`
(#15973) (Arsh)
- 6ae232b linter: Expose type errors via tsgolint (#15917) (camc314)
- 2bfdd26 linter/plugins: Implement `SourceCode#getTokensAfter()`
(#15971) (Arsh)
- 45fffc1 linter/plugins: Implement `SourceCode#getTokenBefore()`
(#15956) (Arsh)
- 776e473 linter/plugins: Implement `SourceCode#getTokensBefore()`
(#15955) (Arsh)
- 595867a oxlint: Generate markdownDescription fields for oxlint JSON
schema. (#15959) (connorshea)
- 5569317 vscode: Add quick actions to status bar tooltip (#15962)
(Sysix)
- 986cac1 linter/plugins: Token-related `SourceCode` APIs (TS ESLint
implementation) (#15861) (Arsh)
- a21f9e4 linter: Implement unicorn/prefer-bigint-literals rule (#15923)
(Michiel Vrins)
- 4b9d8d2 linter/type-aware: Include range with tsconfig diagnostics
(#15916) (camc314)
- 220d01e editor: Improve the status bar item for the VS Code extension
by adding a tooltip. (#15819) (connorshea)

### 🐛 Bug Fixes

- 2bd3cb6 apps, editors, napi: Fix `oxlint-disable` comments (#16014)
(overlookmotel)
- 81f5360 linter/prefer-number-properties: Get fixer to replace entire
call expr (#15979) (camc314)
- e4ba07f language_server: Always write to memory file system (#15975)
(Sysix)
- a8a2032 linter: Support missing `range` for internal diagnostics
(#15964) (camc314)
- 619a226 oxlint/lsp: Don't register `textDocument/formatting`
capability (#15882) (Sysix)
- 6ab1a20 linter: Fix no_useless_spread producing invalid syntax when
removing empty object spreads (#15905) (camc314)
- be4b6df linter: Unicorn/prefer-string-replace-all incorrectly escapes
backslashes (#15901) (camc314)
- 9fa9ef2 linter: Gracefully fail when using import plugin, large file
counf and JS plugins (#15864) (camc314)
- c027398 linter/plugins: Correct bindings package names glob in TSDown
config (#15871) (overlookmotel)
- b622ef8 linter: Fix `oxc/bad_array_method_on_arguments` rule behavior.
(#15854) (connorshea)
- aa06c3f linter: Recognize NewExpression as value context in
no-unused-private-class-members (#15843) (camc314)
- e89c5ba typescript/prefer-namespace-keyword: Skip nested
`TSModuleDeclaration`s (#15806) (overlookmotel)
- 646d020 linter/exhaustive-dependencies: Prevent is_callee_of_call_expr
flag from leaking into nested expressions (#15832) (camc314)
- 46bd6bd linter/plugins: Pin `@typescript-eslint/scope-manager`
dependency (#15807) (overlookmotel)
- fba31fa linter: Patch `@typescript-eslint/scope manager` (#15214)
(Arsh)
- 50307c1 linter/jest: Ignore `expect` identifier in argument position
(#15785) (camc314)

### ⚡ Performance

- 024b48a linter/plugins: Lazy-load tokens parsing code (#16011)
(overlookmotel)
- 15365c9 linter/plugins: Reduce var assignments (#15953)
(overlookmotel)
- 84d1f4f linter/plugins: Downgrade some checks to debug-only (#15922)
(overlookmotel)
- a49f704 linter/typescript: Avoid searching source text unless required
(#15805) (overlookmotel)

### 📚 Documentation

- ceffa5a linter: Add config option docs for various rules. (#16024)
(connorshea)
- 9a0ed13 linter: Fix config option docs for eslint/operator-assignment
rule. (#16030) (connorshea)
- 0b18005 linter: Add config docs generation for rules with Regex
arguments (#15978) (connorshea)
- 48d18e0 linter: Improve diagnostic message for promise/catch-or-return
rule (#15980) (connorshea)
- 6c72e84 linter: Use backticks for code elements across more rule
diagnostics (#15958) (connorshea)
- a63dad7 linter/plugins: Add comment (#15952) (overlookmotel)
- 81ea642 vscode: Use markdownDescription for better formatting in
VSCode Settings (#15889) (connorshea)
- db6a110 linter/plugins: Fix JSDoc comment (#15884) (overlookmotel)
- 1487271 linter: Add config option docs for `jsdoc/require-param` and
`jsdoc/require-returns` rules (#15857) (connorshea)
- fbf0fd4 linter/plugins: Add JSDoc comments to `Plugin` and `Rule`
types (#15815) (overlookmotel)
- ac5e4b5 linter/plugins: Add JSDoc comments and improve comments
(#15814) (overlookmotel)
- 9b7b083 linter: Fix error in `curly` `"all"` example (#15801)
(camc314)
- 65a3520 linter: Improve diagnostic for consistent-type-definitions
rule. (#15752) (connorshea)

### 🛡️ Security

- f9b9276 deps: Update dependency rolldown to v1.0.0-beta.51 (#15856)
(renovate[bot])
# Oxfmt
### 💥 BREAKING CHANGES

- a937890 formatter: [**BREAKING**] Default to `lineWidth: 100` (#15933)
(leaysgur)
- 03d5f5a formatter/sort-imports: [**BREAKING**] Change default order to
`natural` with `natord` crate (#15828) (leaysgur)
- cbb27fd ast: [**BREAKING**] Add `TSGlobalDeclaration` type (#15712)
(overlookmotel)

### 🚀 Features

- 7818e22 formatter/sort-imports: Support `options.groups` (#15831)
(leaysgur)
- f9a502c oxfmt: `oxfmt --lsp` support (#15765) (leaysgur)

### 🐛 Bug Fixes

- 4817486 formatter: Revert `FormatElement::BestFitting` printing logic
(#16028) (Dunqing)
- 5562dd6 formatter: Incorrect formatting method chain with trailing
comments (#16027) (Dunqing)
- 6d14c8b formatter: Comments in export class decorators are printing
incorrectly (#15897) (Dunqing)
- 683c764 formatter: Correct a few minor mismatched typescript tests
(#15894) (Dunqing)
- c11cc07 formatter: Improve formatting for default type on type
parameters (#15893) (Dunqing)
- 0bff596 formatter: Handle JSX expresssion dangling comment (#15890)
(leaysgur)
- 16a9dc8 formatter: Inconsistent printing of class extends and
interface extends (#15892) (Dunqing)
- 300b496 formatter: Inconsistent CallExpression and NewExpression
around member chain and logical expression (#15858) (Dunqing)

### ⚡ Performance

- 65174cc formatter: Reduce the size of `TextWidth` to 4 byte (#15827)
(Dunqing)
- 4fe3aac formatter: Use `ArenaVec` and `ArenaBox` (#15420) (Dunqing)

Co-authored-by: overlookmotel <557937+overlookmotel@users.noreply.github.com>
overlookmotel pushed a commit that referenced this pull request Nov 24, 2025
- Trying to get the simpler stylistic and consistency edits out of the
way.
- Originally added in #16002 and
#15956.
taearls pushed a commit to taearls/oxc that referenced this pull request Dec 11, 2025
…oject#16016)

- Follow up to review comment in
oxc-project#16002 (comment).
- We were originally using `assert` because it was a direct analogue to
`eslint` testing, made migrating their tests slightly easier.

---------

Co-authored-by: overlookmotel <theoverlookmotel@gmail.com>
taearls pushed a commit to taearls/oxc that referenced this pull request Dec 11, 2025
# Oxlint
### 💥 BREAKING CHANGES

- cbb27fd ast: [**BREAKING**] Add `TSGlobalDeclaration` type (oxc-project#15712)
(overlookmotel)

### 🚀 Features

- 72660f7 linter: Support auto generate config document for tuple lint
option (oxc-project#15904) (Duc Nghiem Xuan)
- 0c1f82b linter/plugins: Add `tokens` property to `Program` (oxc-project#16020)
(overlookmotel)
- 9e61beb linter/plugins: Implement `SourceCode#getFirstToken()`
(oxc-project#16002) (Arsh)
- 9a548dd linter/plugins: Implement `SourceCode#getLastTokens()`
(oxc-project#16000) (Arsh)
- 0b6cb11 linter/plugins: Implement `SourceCode#getFirstTokens()`
(oxc-project#15976) (Arsh)
- 166781e linter/plugins: Implement `SourceCode#getTokenAfter()`
(oxc-project#15973) (Arsh)
- 6ae232b linter: Expose type errors via tsgolint (oxc-project#15917) (camc314)
- 2bfdd26 linter/plugins: Implement `SourceCode#getTokensAfter()`
(oxc-project#15971) (Arsh)
- 45fffc1 linter/plugins: Implement `SourceCode#getTokenBefore()`
(oxc-project#15956) (Arsh)
- 776e473 linter/plugins: Implement `SourceCode#getTokensBefore()`
(oxc-project#15955) (Arsh)
- 595867a oxlint: Generate markdownDescription fields for oxlint JSON
schema. (oxc-project#15959) (connorshea)
- 5569317 vscode: Add quick actions to status bar tooltip (oxc-project#15962)
(Sysix)
- 986cac1 linter/plugins: Token-related `SourceCode` APIs (TS ESLint
implementation) (oxc-project#15861) (Arsh)
- a21f9e4 linter: Implement unicorn/prefer-bigint-literals rule (oxc-project#15923)
(Michiel Vrins)
- 4b9d8d2 linter/type-aware: Include range with tsconfig diagnostics
(oxc-project#15916) (camc314)
- 220d01e editor: Improve the status bar item for the VS Code extension
by adding a tooltip. (oxc-project#15819) (connorshea)

### 🐛 Bug Fixes

- 2bd3cb6 apps, editors, napi: Fix `oxlint-disable` comments (oxc-project#16014)
(overlookmotel)
- 81f5360 linter/prefer-number-properties: Get fixer to replace entire
call expr (oxc-project#15979) (camc314)
- e4ba07f language_server: Always write to memory file system (oxc-project#15975)
(Sysix)
- a8a2032 linter: Support missing `range` for internal diagnostics
(oxc-project#15964) (camc314)
- 619a226 oxlint/lsp: Don't register `textDocument/formatting`
capability (oxc-project#15882) (Sysix)
- 6ab1a20 linter: Fix no_useless_spread producing invalid syntax when
removing empty object spreads (oxc-project#15905) (camc314)
- be4b6df linter: Unicorn/prefer-string-replace-all incorrectly escapes
backslashes (oxc-project#15901) (camc314)
- 9fa9ef2 linter: Gracefully fail when using import plugin, large file
counf and JS plugins (oxc-project#15864) (camc314)
- c027398 linter/plugins: Correct bindings package names glob in TSDown
config (oxc-project#15871) (overlookmotel)
- b622ef8 linter: Fix `oxc/bad_array_method_on_arguments` rule behavior.
(oxc-project#15854) (connorshea)
- aa06c3f linter: Recognize NewExpression as value context in
no-unused-private-class-members (oxc-project#15843) (camc314)
- e89c5ba typescript/prefer-namespace-keyword: Skip nested
`TSModuleDeclaration`s (oxc-project#15806) (overlookmotel)
- 646d020 linter/exhaustive-dependencies: Prevent is_callee_of_call_expr
flag from leaking into nested expressions (oxc-project#15832) (camc314)
- 46bd6bd linter/plugins: Pin `@typescript-eslint/scope-manager`
dependency (oxc-project#15807) (overlookmotel)
- fba31fa linter: Patch `@typescript-eslint/scope manager` (oxc-project#15214)
(Arsh)
- 50307c1 linter/jest: Ignore `expect` identifier in argument position
(oxc-project#15785) (camc314)

### ⚡ Performance

- 024b48a linter/plugins: Lazy-load tokens parsing code (oxc-project#16011)
(overlookmotel)
- 15365c9 linter/plugins: Reduce var assignments (oxc-project#15953)
(overlookmotel)
- 84d1f4f linter/plugins: Downgrade some checks to debug-only (oxc-project#15922)
(overlookmotel)
- a49f704 linter/typescript: Avoid searching source text unless required
(oxc-project#15805) (overlookmotel)

### 📚 Documentation

- ceffa5a linter: Add config option docs for various rules. (oxc-project#16024)
(connorshea)
- 9a0ed13 linter: Fix config option docs for eslint/operator-assignment
rule. (oxc-project#16030) (connorshea)
- 0b18005 linter: Add config docs generation for rules with Regex
arguments (oxc-project#15978) (connorshea)
- 48d18e0 linter: Improve diagnostic message for promise/catch-or-return
rule (oxc-project#15980) (connorshea)
- 6c72e84 linter: Use backticks for code elements across more rule
diagnostics (oxc-project#15958) (connorshea)
- a63dad7 linter/plugins: Add comment (oxc-project#15952) (overlookmotel)
- 81ea642 vscode: Use markdownDescription for better formatting in
VSCode Settings (oxc-project#15889) (connorshea)
- db6a110 linter/plugins: Fix JSDoc comment (oxc-project#15884) (overlookmotel)
- 1487271 linter: Add config option docs for `jsdoc/require-param` and
`jsdoc/require-returns` rules (oxc-project#15857) (connorshea)
- fbf0fd4 linter/plugins: Add JSDoc comments to `Plugin` and `Rule`
types (oxc-project#15815) (overlookmotel)
- ac5e4b5 linter/plugins: Add JSDoc comments and improve comments
(oxc-project#15814) (overlookmotel)
- 9b7b083 linter: Fix error in `curly` `"all"` example (oxc-project#15801)
(camc314)
- 65a3520 linter: Improve diagnostic for consistent-type-definitions
rule. (oxc-project#15752) (connorshea)

### 🛡️ Security

- f9b9276 deps: Update dependency rolldown to v1.0.0-beta.51 (oxc-project#15856)
(renovate[bot])
# Oxfmt
### 💥 BREAKING CHANGES

- a937890 formatter: [**BREAKING**] Default to `lineWidth: 100` (oxc-project#15933)
(leaysgur)
- 03d5f5a formatter/sort-imports: [**BREAKING**] Change default order to
`natural` with `natord` crate (oxc-project#15828) (leaysgur)
- cbb27fd ast: [**BREAKING**] Add `TSGlobalDeclaration` type (oxc-project#15712)
(overlookmotel)

### 🚀 Features

- 7818e22 formatter/sort-imports: Support `options.groups` (oxc-project#15831)
(leaysgur)
- f9a502c oxfmt: `oxfmt --lsp` support (oxc-project#15765) (leaysgur)

### 🐛 Bug Fixes

- 4817486 formatter: Revert `FormatElement::BestFitting` printing logic
(oxc-project#16028) (Dunqing)
- 5562dd6 formatter: Incorrect formatting method chain with trailing
comments (oxc-project#16027) (Dunqing)
- 6d14c8b formatter: Comments in export class decorators are printing
incorrectly (oxc-project#15897) (Dunqing)
- 683c764 formatter: Correct a few minor mismatched typescript tests
(oxc-project#15894) (Dunqing)
- c11cc07 formatter: Improve formatting for default type on type
parameters (oxc-project#15893) (Dunqing)
- 0bff596 formatter: Handle JSX expresssion dangling comment (oxc-project#15890)
(leaysgur)
- 16a9dc8 formatter: Inconsistent printing of class extends and
interface extends (oxc-project#15892) (Dunqing)
- 300b496 formatter: Inconsistent CallExpression and NewExpression
around member chain and logical expression (oxc-project#15858) (Dunqing)

### ⚡ Performance

- 65174cc formatter: Reduce the size of `TextWidth` to 4 byte (oxc-project#15827)
(Dunqing)
- 4fe3aac formatter: Use `ArenaVec` and `ArenaBox` (oxc-project#15420) (Dunqing)

Co-authored-by: overlookmotel <557937+overlookmotel@users.noreply.github.com>
taearls pushed a commit to taearls/oxc that referenced this pull request Dec 11, 2025
…16029)

- Trying to get the simpler stylistic and consistency edits out of the
way.
- Originally added in oxc-project#16002 and
oxc-project#15956.
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3 participants