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feat(linter): no-misleading-character-class add suggestions for regex literal#22681

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05-22-feate_linter_no-misleading-character-class_add_suggestions_for_regex_literal
May 24, 2026
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feat(linter): no-misleading-character-class add suggestions for regex literal#22681
graphite-app[bot] merged 1 commit into
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05-22-feate_linter_no-misleading-character-class_add_suggestions_for_regex_literal

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@Sysix

@Sysix Sysix commented May 22, 2026

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Adds fixer suggestions for no-misleading-character-class when the offending pattern comes from a RegExp literal (either standalone /.../ or passed as the first argument to RegExp(...) / new RegExp(...)). This aligns the rule’s autofix behavior across literal and constructor forms by validating patterns with the correct parser for each input kind.

Changes:

  • Implement a u-flag suggestion for AstKind::RegExpLiteral by appending u to the literal when the pattern is valid under Unicode mode.
  • Extend constructor/call fixes to correctly validate and fix cases where the first argument is a RegExp literal (using LiteralParser rather than ConstructorParser).
  • Update the rule’s fixer tests to include previously skipped RegExp-literal fix expectations.

@github-actions github-actions Bot added the A-linter Area - Linter label May 22, 2026

Sysix commented May 22, 2026

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codspeed-hq Bot commented May 22, 2026

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Merging this PR will not alter performance

✅ 5 untouched benchmarks
⏩ 55 skipped benchmarks1


Comparing 05-22-feate_linter_no-misleading-character-class_add_suggestions_for_regex_literal (cca3ecb) with 05-22-fix_linter_respect_flags_overrides_for_regexp__regex_i_u_ (0e91242)

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Footnotes

  1. 55 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.

@Sysix Sysix force-pushed the 05-22-feate_linter_no-misleading-character-class_add_suggestions_for_regex_literal branch from 411fb34 to 8b87e41 Compare May 22, 2026 18:52
@Sysix Sysix force-pushed the 05-22-fix_linter_respect_flags_overrides_for_regexp__regex_i_u_ branch from 314bcb9 to 8a766d6 Compare May 22, 2026 18:52
@Sysix Sysix changed the title feate(linter): no-misleading-character-class add suggestions for regex literal feat(linter): no-misleading-character-class add suggestions for regex literal May 22, 2026
@Sysix Sysix force-pushed the 05-22-feate_linter_no-misleading-character-class_add_suggestions_for_regex_literal branch from 8b87e41 to 2760270 Compare May 22, 2026 19:14
@Sysix Sysix force-pushed the 05-22-fix_linter_respect_flags_overrides_for_regexp__regex_i_u_ branch from 8a766d6 to 0e91242 Compare May 22, 2026 19:14
@Sysix Sysix force-pushed the 05-22-feate_linter_no-misleading-character-class_add_suggestions_for_regex_literal branch from 2760270 to cca3ecb Compare May 22, 2026 19:30
@Sysix Sysix requested a review from Copilot May 22, 2026 19:33

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Pull request overview

Adds fixer suggestions for no-misleading-character-class when the offending pattern comes from a RegExp literal (either standalone /.../ or passed as the first argument to RegExp(...) / new RegExp(...)). This aligns the rule’s autofix behavior across literal and constructor forms by validating patterns with the correct parser for each input kind.

Changes:

  • Implement a u-flag suggestion for AstKind::RegExpLiteral by appending u to the literal when the pattern is valid under Unicode mode.
  • Extend constructor/call fixes to correctly validate and fix cases where the first argument is a RegExp literal (using LiteralParser rather than ConstructorParser).
  • Update the rule’s fixer tests to include previously skipped RegExp-literal fix expectations.

@Sysix Sysix marked this pull request as ready for review May 22, 2026 19:47
@Sysix Sysix requested a review from camc314 as a code owner May 22, 2026 19:47
@camc314 camc314 added the 0-merge Merge with Graphite Merge Queue label May 24, 2026

camc314 commented May 24, 2026

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Merge activity

…ex literal (#22681)

Adds fixer suggestions for `no-misleading-character-class` when the offending pattern comes from a RegExp *literal* (either standalone `/.../` or passed as the first argument to `RegExp(...)` / `new RegExp(...)`). This aligns the rule’s autofix behavior across literal and constructor forms by validating patterns with the correct parser for each input kind.

**Changes:**
- Implement a `u`-flag suggestion for `AstKind::RegExpLiteral` by appending `u` to the literal when the pattern is valid under Unicode mode.
- Extend constructor/call fixes to correctly validate and fix cases where the first argument is a RegExp literal (using `LiteralParser` rather than `ConstructorParser`).
- Update the rule’s fixer tests to include previously skipped RegExp-literal fix expectations.
@graphite-app graphite-app Bot force-pushed the 05-22-fix_linter_respect_flags_overrides_for_regexp__regex_i_u_ branch from 0e91242 to ed445ba Compare May 24, 2026 13:18
@graphite-app graphite-app Bot force-pushed the 05-22-feate_linter_no-misleading-character-class_add_suggestions_for_regex_literal branch from cca3ecb to 10da26b Compare May 24, 2026 13:18
Base automatically changed from 05-22-fix_linter_respect_flags_overrides_for_regexp__regex_i_u_ to main May 24, 2026 13:21
@graphite-app graphite-app Bot removed the 0-merge Merge with Graphite Merge Queue label May 24, 2026
@graphite-app graphite-app Bot merged commit 10da26b into main May 24, 2026
31 checks passed
@graphite-app graphite-app Bot deleted the 05-22-feate_linter_no-misleading-character-class_add_suggestions_for_regex_literal branch May 24, 2026 13:22
Dunqing added a commit that referenced this pull request May 26, 2026
# Oxlint
### 🚀 Features

- 10da26b linter: `no-misleading-character-class` add suggestions for
regex literal (#22681) (Sysix)
- b84941e linter/vue: Implement no-expose-after-await rule (#22675)
(bab)
- 98b98c1 linter/vue: Implement no-computed-properties-in-data rule
(#22674) (bab)
- 868e2e8 linter: Add suggestion for `no-misleading-character-class`
(#22631) (Sysix)
- 2d4c919 oxlint: Support `vite-plus/resolveConfig` for vite.config.ts
(#22456) (leaysgur)
- 2a60012 linter/vue: Implement require-render-return rule (#22613)
(bab)
- 9f227fd linter/vue: Implement no-deprecated-props-default-this rule
(#21892) (bab)
- 9cd28b3 linter: Add debug option to print files to be linted (#22546)
(camchenry)
- 87f065e linter/vue: Implement return-in-emits-validator rule (#21935)
(bab)
- ea0380c linter/unicorn: Implement `import-style` rule (#22173) (Hao
Chen)
- dde40fe linter/vue: Implement no-watch-after-await rule (#22006) (bab)
- a735eb0 linter/vue: Implement valid-next-tick rule (#22531) (bab)
- 6dc615d linter/vue: Implement no-shared-component-data rule (#21842)
(bab)
- a656418 linter/vue: Implement valid-define-options rule (#22107) (bab)
- bb6f1b2 linter/vue: Implement require-slots-as-functions rule (#22244)
(bab)
- 5fa4774 linter/n: Implement `callback-return` rule (#22470) (Mikhail
Baev)

### 🐛 Bug Fixes

- 52bd016 linter: Respect allow unused disable directives in LSP
(#22715) (camc314)
- fa7c463 semantic: Correct TS enum member symbol spans (#22689)
(camc314)
- ed445ba linter: Respect flags overrides for `RegExp(/regex/i, "u")`
(#22678) (Sysix)
- 26b9396 semantic: Resolve parameter decorators outside parameter scope
(#22623) (camc314)
- 203952d linter: `no-misleading-character-class` fix
`is_unicode_code_point_escape` check (#22655) (Sysix)
- 2f64d3d linter: `no-misleading-character-class` own diagnostic for
surrogate pairs without u flag (#22654) (Sysix)
- 0c6ebc2 linter/eslint/no-lone-blocks: Do not flag empty loops (#22649)
(Mikhail Baev)
- 2a7562e linter/no-focused-tests: Mark fixer as a suggestion (#22645)
(camc314)
- dbe644f linter: Respect args none for unused rest parameters (#22627)
(camc314)
- d0211b0 linter: Allow undefined in DummyRuleMap index (#22626)
(camc314)
- 36fc0ec oxlint/lsp: "ignore this" actions merge with existing
directive (#22604) (Sysix)
- f7f370e linter/vitest/prefer-expect-type-of: Recommend `toBeTypeOf`
instead of `expectTypeOf` (#22612) (Mikhail Baev)
- 77063e5 linter/consistent-indexed-object-style: Preserve interface
modifiers in fixes (#22579) (camc314)
- 4f33aa7 linter: Treat `TSGlobalDeclaration` as ambient in
`has_ambient_typescript_ancestor` (#22577) (camc314)

### ⚡ Performance

- c22938d linter/no-async-endpoint-handlers: Populate node types
(#22601) (camc314)
- 607486e linter/no-negated-condition: Populate node types (#22602)
(camc314)
- 4dcaa59 linter/consistent-type-imports: Populate node types (#22600)
(camc314)
- 5bd3b25 linter/no-unused-vars: Avoid cloned ancestor iterator (#22598)
(camc314)
- 97fe9ba linter/no-extra-non-null-assertion: Reduce node matches
(#22588) (camc314)
- ae98296 linter/consistent-indexed-object-style: Populate node types
(#22578) (camc314)
# Oxfmt
### 🚀 Features

- 16b8058 oxfmt: Support `vite-plus/resolveConfig` for vite.config.ts
(#22454) (leaysgur)

### 🐛 Bug Fixes

- 5a26479 formatter: Preserve import phases (#22692) (Cameron)

### ⚡ Performance

- 78cf83f formatter: Pre-size output buffer using source text length
(#22594) (Dunqing)

Co-authored-by: Dunqing <[email protected]>
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3 participants