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feat(linter): introduce typeCheck config option#19764

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feat(linter): introduce typeCheck config option#19764
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c/02-26-feat_linter_introduce_typecheck_config_option

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@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 Feb 26, 2026
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Merging this PR will not alter performance

✅ 4 untouched benchmarks
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Comparing c/02-26-feat_linter_introduce_typecheck_config_option (ac10479) with main (ed17bbf)

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  1. 51 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports.

@camc314 camc314 self-assigned this Feb 26, 2026
@camc314 camc314 marked this pull request as ready for review February 26, 2026 14:33
Copilot AI review requested due to automatic review settings February 26, 2026 14:33
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Pull request overview

This PR introduces a new typeCheck configuration option to enable experimental TypeScript compiler diagnostics through the config file, mirroring the existing --type-check CLI flag functionality.

Changes:

  • Added typeCheck boolean option to OxlintOptions configuration structure
  • Extended configuration validation to reject typeCheck in nested configs (root-only restriction)
  • Integrated config option with CLI flag system, allowing CLI to override config file settings

Reviewed changes

Copilot reviewed 19 out of 19 changed files in this pull request and generated no comments.

Show a summary per file
File Description
tasks/website_linter/src/snapshots/schema_markdown.snap Added documentation for typeCheck option
tasks/website_linter/src/snapshots/schema_json.snap Added JSON schema definition for typeCheck option
npm/oxlint/configuration_schema.json Added typeCheck property to OxlintOptions schema
crates/oxc_linter/src/config/oxlintrc.rs Added typeCheck field to OxlintOptions, updated is_empty() and merge() methods, extended tests
crates/oxc_linter/src/config/config_store.rs Added type_check_enabled() method and corresponding tests
crates/oxc_linter/src/config/config_builder.rs Added type_check() getter method and extended integration tests
crates/oxc_linter/src/config/config_loader.rs Added validation to reject typeCheck in nested configs, extended tests
apps/oxlint/src/lint.rs Integrated config-based type_check with CLI flag (OR logic), added tests
apps/oxlint/src-js/package/config.generated.ts Added TypeScript type definition for typeCheck option
crates/oxc_linter/fixtures/extends_config/options/type_check_*.json Added fixture files for testing config extension behavior
apps/oxlint/fixtures/tsgolint_type_error/config-type-check*.json Added fixture configs for testing typeCheck functionality
apps/oxlint/test/fixtures/js_config_dynamic_type_check/* Added end-to-end test fixture for JS config with dynamic typeCheck

@camc314 camc314 added the 0-merge Merge with Graphite Merge Queue label Feb 26, 2026
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camc314 commented Feb 26, 2026

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@graphite-app graphite-app bot force-pushed the c/02-26-feat_linter_introduce_typecheck_config_option branch from ac10479 to f34f6fa Compare February 26, 2026 14:54
@graphite-app graphite-app bot merged commit f34f6fa into main Feb 26, 2026
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@graphite-app graphite-app bot deleted the c/02-26-feat_linter_introduce_typecheck_config_option branch February 26, 2026 15:01
@graphite-app graphite-app bot removed the 0-merge Merge with Graphite Merge Queue label Feb 26, 2026
wagenet added a commit to wagenet/oxc that referenced this pull request Feb 27, 2026
Closes oxc-project#15972. Adds `options.reportUnusedDisableDirectives` to
`.oxlintrc.json`, following the same pattern as `typeAware` (oxc-project#19614)
and `typeCheck` (oxc-project#19764).

- Root-config-only (nested configs are rejected with a clear error)
- CLI `--report-unused-disable-directives[-severity]` takes precedence
  over the config file value
- Schema, TypeScript types, and website snapshots regenerated

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
camc314 pushed a commit that referenced this pull request Mar 2, 2026
# Oxlint
### 🚀 Features

- 2e0e1d0 linter/no-unused-vars: Add experimental fix mode controls
(off|suggestion|fix) (#19774) (camc314)
- f34f6fa linter: Introduce typeCheck config option (#19764) (camc314)
- 694be7d linter: Introduce typeAware as config options (#19614)
(camc314)
- 655c38f semantic: Add "did you mean?" suggestions to undefined name
errors (#19102) (copilot-swe-agent)
- e97a57e linter/id-length: Use serde to deserialize rule options
(#19636) (camc314)
- c4a3677 parser: Report error for initializer in ambient context
(#19187) (camc314)
- 346045a linter/id-length: Add `checkGeneric` option (#19634) (camc314)

### 🐛 Bug Fixes

- 1b7a937 linter: Correct double-comparisons fix with swapped operands
(#19846) (camc314)
- c308857 linter/consistent_type_imports: Add missing help and notes to
diagnostics (#19827) (Daniel Osmond)
- 7682e5a linter/plugins: Decode escapes in identifier tokens (#19838)
(overlookmotel)
- f368fcd linter/consistent_type_assertions: Add missing with_help and
with_note to diagnostics (#19826) (Daniel Osmond)
- 04e6223 npm: Add `preferUnplugged` for Yarn PnP compatibility (#19829)
(Boshen)
- 86d5037 linter: Add help text to no-extend-native,
no-useless-backreference (#19733) (Anthony Amaro)
- 50e8eff linter: Add .with_help() to operator-assignment,
no-nonoctal-decimal-escape (#19732) (Anthony Amaro)
- 1417bdc linter/no-wrapper-object-types: Add help messages to missing
diagnostics (#19771) (Daniel Osmond)
- 0838477 linter/ban_ts_comment: Add help and notes to missing
diagnostics (#19781) (Daniel Osmond)
- e8c77cf linter/adjacent_overload_signatures: Add missing diagnostics
(#19780) (Daniel Osmond)
- 28834ac linter/ban_types: Add missing help and note to diagnostics
(#19782) (Daniel Osmond)
- fd938d3 linter/prefer-enum-initializers: Add help messages to missing
diagnostics (#19772) (Daniel Osmond)
- eb928ee linter/no-dynamic-delete: Add help messages to missing
diagnostics (#19768) (Daniel Osmond)
- a985666 linter/no-empty-interface: Add help messages to missing
diagnostics (#19769) (Daniel Osmond)
- 2dc0ceb linter/no-extra-non-null-assertion: Add help messages to
missing diagnostics (#19770) (Daniel Osmond)
- 95d5d66 linter/no-dupe-keys: Handle `__proto__` proto setters in
(#19762) (camc314)
- 24ff0db linter/exhaustive-deps: False positive for member expressions
in IIFEs (#19751) (Dennis Chen)
- 7243a58 linter/no-use-before-define: Honor `ignoreTypeReferences` when
value and type name collisions (#19747) (Dimava)
- eefd818 linter/explicit-module-boundary-types: Add help messages to
missing diagnostics (#19736) (Daniel Osmond)
- 0440e9a linter: Add help text to no_control_regex, no_fallthrough,
no_param_reassign (#19655) (Anthony Amaro)
- e84cb2f react/display-name: Handle merged type+value context symbols
(#19608) (camc314)
- ce7e253 linter/prefer-object-from-entries: Require exact path match in
unicorn helper (#19687) (camc314)
- f5694ce estree/tokens: Reverse field order of `regex` object in tokens
(#19679) (overlookmotel)
- b2b7a55 estree/tokens: Generate tokens for files with BOM (#19535)
(overlookmotel)
- 0722721 linter/jsx-curly-brace-presence: False positive with prop &
mixed quotes (#19674) (camc314)
- 3496acd linter: Enhance diagnostic help messages for eslint rules
(#19653) (Anthony Amaro)
- e384e94 linter: Enhance help diagnostic messages for more eslint rules
(#19658) (Anthony Amaro)
- a4d5b34 linter: Avoid non-promise catch false positives (#19574)
(camc314)
- 5706f38 linter: `unicorn/no-array-callback-reference` skip `Effect.*`
array-like methods name. (#19633) (Said Atrahouch)

### ⚡ Performance

- 05ccf9f linter/plugins: Transfer tokens via raw transfer (#19893)
(overlookmotel)
- 4b0611a estree/tokens: Introduce `ESTreeTokenConfig` trait (#19842)
(overlookmotel)
- ec88f6a estree/tokens: Serialize tokens while visiting AST (#19726)
(overlookmotel)
- d4dcf26 linter/plugins: Remove `typescript` from bundle (#19531)
(overlookmotel)
- 6a6513c linter/plugins: Use Oxc tokens in plugins (#19498) (camc314)

### 📚 Documentation

- d86f59e linter: Improve docs for no-useless-concat, mark as pending
fixer. (#19859) (connorshea)
- caa091d linter/plugins: Correct doc comments for `initTokens` (#19530)
(overlookmotel)
- 2fa936f README.md: Map npm package links to npmx.dev (#19666) (Boshen)
- dc0ff73 linter/no-useless-constructor: Warn for parameter properties
as well (#19638) (Ole Asteo)
# Oxfmt
### 🚀 Features

- 5141bc2 formatter: Support trailing ignore comments (#19304) (Andreas
Lubbe)
- 4888a99 oxfmt/lsp: Support other schemes beside `file://` and
`untitled://` (#19872) (Sysix)
- 14a0181 oxfmt: Support `graphql()` variant for gql-in-js (#19703)
(leaysgur)
- ca68ea6 oxfmt: Support gql-in-js substitution (#19670) (leaysgur)
- 035933c formatter,oxfmt: Support js-in-vue (partially) (#19514)
(leaysgur)
- 9e11dc6 parser,estree,coverage: Collect tokens in parser and convert
to ESTree format (#19497) (camc314)

### 🐛 Bug Fixes

- 8e3842d oxfmt: Avoid embedded TSFN crash by returning errors as data
(take2) (#19806) (Yuji Sugiura)
- 04e6223 npm: Add `preferUnplugged` for Yarn PnP compatibility (#19829)
(Boshen)
- e540585 oxfmt: Support tailwind sort for CSS/LESS/SCSS (#19803)
(leaysgur)
- 93bb861 formatter: Trim trailing whitespace before breaking line
(#19740) (leaysgur)
- b85f97b formatter: Drop blank line between terminal call and first
chain member (#19659) (Dunqing)

### ⚡ Performance

- b3b2d30 parser: Introduce `ParserConfig` (#19637) (overlookmotel)

### 📚 Documentation

- 2fa936f README.md: Map npm package links to npmx.dev (#19666) (Boshen)

Co-authored-by: Boshen <1430279+Boshen@users.noreply.github.com>
camc314 pushed a commit to wagenet/oxc that referenced this pull request Mar 2, 2026
Closes oxc-project#15972. Adds `options.reportUnusedDisableDirectives` to
`.oxlintrc.json`, following the same pattern as `typeAware` (oxc-project#19614)
and `typeCheck` (oxc-project#19764).

- Root-config-only (nested configs are rejected with a clear error)
- CLI `--report-unused-disable-directives[-severity]` takes precedence
  over the config file value
- Schema, TypeScript types, and website snapshots regenerated

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
camc314 pushed a commit to wagenet/oxc that referenced this pull request Mar 2, 2026
Closes oxc-project#15972. Adds `options.reportUnusedDisableDirectives` to
`.oxlintrc.json`, following the same pattern as `typeAware` (oxc-project#19614)
and `typeCheck` (oxc-project#19764).

- Root-config-only (nested configs are rejected with a clear error)
- CLI `--report-unused-disable-directives[-severity]` takes precedence
  over the config file value
- Schema, TypeScript types, and website snapshots regenerated

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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