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fix(linter/eslint/no-lone-blocks): do not flag empty loops#22649

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camc314 merged 2 commits into
oxc-project:mainfrom
baevm:fix/eslint-no-lone-blocks-on-loops
May 21, 2026
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fix(linter/eslint/no-lone-blocks): do not flag empty loops#22649
camc314 merged 2 commits into
oxc-project:mainfrom
baevm:fix/eslint-no-lone-blocks-on-loops

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@baevm

@baevm baevm commented May 21, 2026

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fixes #22648. matches upstream

@baevm baevm requested a review from camc314 as a code owner May 21, 2026 15:07
Copilot AI review requested due to automatic review settings May 21, 2026 15:07
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Pull request overview

Fixes a false positive in the eslint/no-lone-blocks linter rule by ensuring empty loop bodies are not treated as “lone blocks”, aligning Oxlint behavior with ESLint (issue #22648).

Changes:

  • Skip reporting empty BlockStatements when their parent node is an iteration statement (while, do-while, for, for-in, for-of).
  • Add regression test cases covering empty loop bodies to prevent reintroducing the false positive.

@codspeed-hq

codspeed-hq Bot commented May 21, 2026

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Merging this PR will not alter performance

✅ 5 untouched benchmarks
⏩ 55 skipped benchmarks1


Comparing baevm:fix/eslint-no-lone-blocks-on-loops (eea61c0) with main (d7cd951)

Open in CodSpeed

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.

@camc314 camc314 self-assigned this May 21, 2026
@camc314 camc314 added the A-linter Area - Linter label May 21, 2026

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wierd behaviour 🤷

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thanks!

@camc314 camc314 merged commit 0c6ebc2 into oxc-project:main May 21, 2026
28 checks passed
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 <29533304+Dunqing@users.noreply.github.com>
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linter: eslint/no-lone-blocks flags empty loops

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