Draft: fix(deps): update dependency eslint to v9

AV Botrequested to merge
renovate/major-eslint-monorepo into master

This MR contains the following updates:

Package Type Update Change
eslint (source) dependencies major 8.57.1 -> 9.17.0

This MR may involve breaking changes so it should be carefully checked.

Release Notes

eslint/eslint (eslint)

v9.17.0

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Features

Bug Fixes

  • 67d683d fix: fix crash when message.fix is nullish (#​19168) (ntnyq)
  • c618707 fix: ignore vars with non-identifier references in no-useless-assignment (#​19200) (YeonJuan)

Documentation

  • 3c22d2a docs: update yoda to Yoda in yoda.md for consistency (#​19230) (루밀LuMir)
  • e0a2203 docs: add missing backticks to no-sequences (#​19233) (루밀LuMir)
  • 4cc4881 docs: Update README (GitHub Actions Bot)
  • 3db6fdf docs: [no-await-in-loop] expand on benefits and inapplicability (#​19211) (Kirk Waiblinger)
  • bf2a4f6 docs: add missing backticks to func-style (#​19227) (루밀LuMir)
  • ba098bd docs: add missing header to prefer-spread (#​19224) (루밀LuMir)
  • b607ae6 docs: update description of no-param-reassign (#​19220) (루밀LuMir)
  • 1eb424d docs: add missing backticks to prefer-destructuring (#​19223) (루밀LuMir)
  • 85998d1 docs: add missing backticks to no-unneeded-ternary (#​19222) (루밀LuMir)
  • b75b32c docs: add missing backticks to no-new-func (#​19219) (루밀LuMir)
  • a7700bc docs: add missing backticks to id-length (#​19217) (루밀LuMir)
  • e2bb429 docs: add missing backticks to complexity.md (#​19214) (루밀LuMir)
  • 045d716 docs: add missing ) to id-denylist (#​19213) (루밀LuMir)
  • 7fe4114 docs: Update README (GitHub Actions Bot)
  • c743ba6 docs: add CSS language to no-restricted-syntax (#​19208) (Milos Djermanovic)
  • 1416d70 docs: add missing backticks to eqeqeq (#​19207) (루밀LuMir)
  • b950c1b docs: add missing backticks to prefer-object-spread (#​19206) (루밀LuMir)
  • 8a941cb docs: update docs and description of require-unicode-regexp (#​19205) (루밀LuMir)
  • cbab228 docs: Update README (GitHub Actions Bot)
  • f2257ce docs: update comments and description of no-script-url (#​19203) (루밀LuMir)
  • 365f0f4 docs: add missing backtick to default-case-last (#​19202) (루밀LuMir)
  • e6b84f5 docs: add missing punctuation in document (#​19161) (루밀LuMir)
  • c88708e docs: replace quote with backtick in description of for-direction (#​19199) (루밀LuMir)
  • a76f233 docs: use higher contrast color tokens for code comments (#​19187) (Josh Goldberg ✨)
  • db19502 docs: Update README (GitHub Actions Bot)

Chores

  • cc243c9 chore: upgrade to @eslint/js@9.17.0 (#​19242) (Francesco Trotta)
  • 84c5787 chore: package.json update for @​eslint/js release (Jenkins)
  • 4c4f53b chore: add missing backticks to flags.js (#​19226) (루밀LuMir)
  • 4b3132c chore: update dependency eslint-plugin-expect-type to ^0.6.0 (#​19221) (renovate[bot])
  • 9bf2204 chore: add type definitions for the eslint-config-eslint package (#​19050) (Arya Emami)
  • ee8c220 chore: fix incorrect name property in integration-tutorial-code (#​19218) (루밀LuMir)
  • cca801d chore: Upgrade cross-spawn to 7.0.6 (#​19185) (folortin)

v9.16.0

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Features

  • 8f70eb1 feat: Add ignoreComputedKeys option in sort-keys rule (#​19162) (Milos Djermanovic)

Documentation

  • 9eefc8f docs: fix typos in use-isnan (#​19190) (루밀LuMir)
  • 0c8cea8 docs: switch the order of words in no-unreachable (#​19189) (루밀LuMir)
  • 0c19417 docs: add missing backtick to no-async-promise-executor (#​19188) (루밀LuMir)
  • 8df9276 docs: add backtick in -0 in description of no-compare-neg-zero (#​19186) (루밀LuMir)
  • 7e16e3f docs: fix caseSensitive option's title of sort-keys (#​19183) (Tanuj Kanti)
  • 0c6b842 docs: fix typos in migration-guide.md (#​19180) (루밀LuMir)
  • 353266e docs: fix a typo in debug.md (#​19179) (루밀LuMir)
  • 5ff318a docs: delete unnecessary horizontal rule(---) in nodejs-api (#​19175) (루밀LuMir)
  • 576bcc5 docs: mark more rules as handled by TypeScript (#​19164) (Tanuj Kanti)
  • 742d054 docs: note that no-restricted-syntax can be used with any language (#​19148) (Milos Djermanovic)

Chores

v9.15.0

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Features

  • 01557ce feat: Implement Language#normalizeLanguageOptions() (#​19104) (Nicholas C. Zakas)
  • 2edc0e2 feat: add meta.defaultOptions (#​17656) (Josh Goldberg ✨)
  • bdec50e feat: fix no-useless-computed-key false negative with __proto__ (#​19123) (Milos Djermanovic)
  • 3087c9e feat: add meta object to @eslint/js plugin (#​19095) (Francesco Trotta)

Bug Fixes

Documentation

  • d927920 docs: fix styles in no-js mode (#​18916) (Tanuj Kanti)
  • 09bc2a8 docs: Update README (GitHub Actions Bot)
  • 39089c8 docs: add no-useless-computed-key examples with object patterns (#​19109) (Milos Djermanovic)
  • 895c60f docs: add missing messageId property and suggestion properties (#​19122) (fnx)
  • 298625e docs: Change CLI -c to use flat config (#​19103) (Nicholas C. Zakas)
  • 522d8a3 docs: add deprecation on indent, quotes and semi rule types (#​19090) (Marco Pasqualetti)

Chores

v9.14.0

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Features

  • 3fa009f feat: add support for Import Attributes and RegExp Modifiers (#​19076) (Milos Djermanovic)
  • b0faee3 feat: add types for the @eslint/js package (#​19010) (Nitin Kumar)

Bug Fixes

  • 24d0172 fix: enable retry concurrency limit for readFile() (#​19077) (Nicholas C. Zakas)
  • b442067 fix: Don't crash when directory is deleted during traversal. (#​19067) (Nicholas C. Zakas)
  • d474443 fix: avoid call stack overflow while processing globs (#​19035) (Livia Medeiros)

Documentation

Build Related

Chores

v9.13.0

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Features

Bug Fixes

Documentation

  • abdbfa8 docs: mark LintMessage#nodeType as deprecated (#​19019) (Nitin Kumar)
  • 19e68d3 docs: update deprecated rules type definitions (#​19018) (Nitin Kumar)
  • 7dd402d docs: Update examples of passing multiple values to a CLI option (#​19006) (Milos Djermanovic)
  • 5dcbc51 docs: Add example with side-effect imports to no-restricted-imports (#​18997) (Milos Djermanovic)
  • 1ee87ca docs: Update README (GitHub Actions Bot)
  • 2c3dbdc docs: Use prerendered sponsors for README (#​18988) (Milos Djermanovic)

Chores

v9.12.0

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Features

Bug Fixes

Documentation

  • ecbd522 docs: Mention code explorer (#​18978) (Nicholas C. Zakas)
  • 7ea4ecc docs: Clarifying the Use of Meta Objects (#​18697) (Amaresh S M)
  • d3e4b2e docs: Clarify how to exclude .js files (#​18976) (Milos Djermanovic)
  • 57232ff docs: Mention plugin-kit in language docs (#​18973) (Nicholas C. Zakas)
  • b80ed00 docs: Update README (GitHub Actions Bot)
  • cb69ab3 docs: Update README (GitHub Actions Bot)
  • 7fb0d95 docs: Update README (GitHub Actions Bot)
  • 493348a docs: Update README (GitHub Actions Bot)
  • 87a582c docs: fix typo in id-match rule (#​18944) (Jay)

Chores

v9.11.1

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Bug Fixes

  • 20fd916 fix: add @eslint/core, @types/estree, & @types/json-schema deps (#​18938) (Nitin Kumar)
  • 2738322 fix: add missing types for require-atomic-updates rule (#​18937) (Kristóf Poduszló)
  • d71ff30 fix: add missing types for object-shorthand rule (#​18935) (Kristóf Poduszló)
  • 561cadc fix: add missing types for no-unsafe-negation rule (#​18932) (Kristóf Poduszló)
  • 8843656 fix: add missing types for no-underscore-dangle rule (#​18931) (Kristóf Poduszló)
  • 92cde5c fix: add missing types for no-shadow rule (#​18930) (Kristóf Poduszló)
  • b3cbe11 fix: add missing types for no-sequences rule (#​18929) (Kristóf Poduszló)
  • 976f77f fix: add missing types for no-unused-expressions rule (#​18933) (Kristóf Poduszló)

Documentation

  • 3eff709 docs: replace deprecated Linter.FlatConfig type with Linter.Config (#​18941) (Carlos Meira)

Chores

v9.11.0

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Features

  • ec30c73 feat: add "eslint/universal" to export Linter (#​18883) (唯然)
  • c591da6 feat: Add language to types (#​18917) (Nicholas C. Zakas)
  • 492eb8f feat: limit the name given to ImportSpecifier in id-length (#​18861) (Tanuj Kanti)
  • 19c6856 feat: Add no-useless-constructor suggestion (#​18799) (Jordan Thomson)
  • a48f8c2 feat: add type FormatterFunction, update LoadedFormatter (#​18872) (Francesco Trotta)

Bug Fixes

  • 5e5f39b fix: add missing types for no-restricted-exports rule (#​18914) (Kristóf Poduszló)
  • 8f630eb fix: add missing types for no-param-reassign options (#​18906) (Kristóf Poduszló)
  • d715781 fix: add missing types for no-extra-boolean-cast options (#​18902) (Kristóf Poduszló)
  • 2de5742 fix: add missing types for no-misleading-character-class options (#​18905) (Kristóf Poduszló)
  • c153084 fix: add missing types for no-implicit-coercion options (#​18903) (Kristóf Poduszló)
  • fa11b2e fix: add missing types for no-empty-function options (#​18901) (Kristóf Poduszló)
  • a0deed1 fix: add missing types for camelcase options (#​18897) (Kristóf Poduszló)

Documentation

  • e4e5709 docs: correct prefer-object-has-own type definition comment (#​18924) (Nitin Kumar)
  • 91cbd18 docs: add unicode abbreviations in no-irregular-whitespace rule (#​18894) (Alix Royere)
  • 59cfc0f docs: clarify resultsMeta in LoadedFormatter type (#​18881) (Milos Djermanovic)
  • adcc50d docs: Update README (GitHub Actions Bot)
  • 4edac1a docs: Update README (GitHub Actions Bot)

Build Related

  • 959d360 build: Support updates to previous major versions (#​18871) (Milos Djermanovic)

Chores

v9.10.0

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Features

  • 301b90d feat: Add types (#​18854) (Nicholas C. Zakas)
  • bcf0df5 feat: limit namespace import identifier in id-length rule (#​18849) (ChaedongIm)
  • 45c18e1 feat: add requireFlag option to require-unicode-regexp rule (#​18836) (Brett Zamir)
  • 183b459 feat: add error message for duplicate flags in no-invalid-regexp (#​18837) (Tanuj Kanti)
  • c69b406 feat: report duplicate allowed flags in no-invalid-regexp (#​18754) (Tanuj Kanti)

Documentation

  • bee0e7a docs: update README (#​18865) (Milos Djermanovic)
  • 5d80b59 docs: specify that ruleId can be null in custom formatter docs (#​18857) (Milos Djermanovic)
  • 156b1c3 docs: Update README (GitHub Actions Bot)
  • f6fdef9 docs: Update README (GitHub Actions Bot)
  • a20c870 docs: Update README (GitHub Actions Bot)
  • 90e699b docs: Update README (GitHub Actions Bot)

Chores

v9.9.1

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Bug Fixes

  • 9bde90c fix: add logic to handle fixTypes in lintText() (#​18736) (Amaresh S M)

Documentation

Chores

v9.9.0

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Features

  • 41d0206 feat: Add support for TS config files (#​18134) (Arya Emami)
  • 3a4eaf9 feat: add suggestion to require-await to remove async keyword (#​18716) (Dave)

Documentation

  • 9fe068c docs: how to author plugins with configs that extend other configs (#​18753) (Alec Gibson)
  • 48117b2 docs: add version support page in the side navbar (#​18738) (Amaresh S M)
  • fec2951 docs: add version support page to the dropdown (#​18730) (Amaresh S M)
  • 38a0661 docs: Fix typo (#​18735) (Zaina Al Habash)
  • 3c32a9e docs: Update yarn command for creating ESLint config (#​18739) (Temitope Ogunleye)
  • f9ac978 docs: Update README (GitHub Actions Bot)

Chores

v9.8.0

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Features

  • 13d0bd3 feat: Add and use SourceCode#getLoc/getRange (#​18703) (Nicholas C. Zakas)

Bug Fixes

  • ab0ff27 fix: Throw error when invalid flags passed (#​18705) (Nicholas C. Zakas)
  • 70dc803 fix: basePath directory can never be ignored (#​18711) (Milos Djermanovic)

Documentation

Build Related

Chores

v9.7.0

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Features

  • 7bd9839 feat: add support for es2025 duplicate named capturing groups (#​18630) (Yosuke Ota)
  • 1381394 feat: add regex option in no-restricted-imports (#​18622) (Nitin Kumar)

Bug Fixes

  • 14e9f81 fix: destructuring in catch clause in no-unused-vars (#​18636) (Francesco Trotta)

Documentation

  • 9f416db docs: Add Powered by Algolia label to the search. (#​18633) (Amaresh S M)
  • c8d26cb docs: Open JS Foundation -> OpenJS Foundation (#​18649) (Milos Djermanovic)
  • 6e79ac7 docs: loadESLint does not support option cwd (#​18641) (Francesco Trotta)

Chores

v9.6.0

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Features

  • e2b16e2 feat: Implement feature flags (#​18516) (Nicholas C. Zakas)
  • 8824aa1 feat: add ecmaVersion: 2025, parsing duplicate named capturing groups (#​18596) (Milos Djermanovic)

Bug Fixes

  • 1613e2e fix: Allow escaping characters in config patterns on Windows (#​18628) (Milos Djermanovic)
  • 21d3766 fix: no-unused-vars include caught errors pattern in report message (#​18609) (Kirk Waiblinger)
  • d7a7736 fix: improve no-unused-vars message on unused caught errors (#​18608) (Kirk Waiblinger)
  • f9e95d2 fix: correct locations of invalid /* eslint */ comments (#​18593) (Milos Djermanovic)

Documentation

  • 13dbecd docs: Limit search to just docs (#​18627) (Nicholas C. Zakas)
  • 375227f docs: Update getting-started.md - add pnpm to init eslint config (#​18599) (Kostiantyn Ochenash)
  • 44915bb docs: Update README (GitHub Actions Bot)
  • d50db7b docs: Update vscode-eslint info (#​18595) (Nicholas C. Zakas)

Chores

v9.5.0

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Features

  • b2d256c feat: no-sparse-arrays report on "comma" instead of the whole array (#​18579) (fisker Cheung)

Bug Fixes

  • 6880286 fix: treat * as a universal pattern (#​18586) (Milos Djermanovic)
  • 7fbe211 fix: message template for all files ignored (#​18564) (Milos Djermanovic)
  • 469cb36 fix: Don't lint the same file multiple times (#​18552) (Milos Djermanovic)
  • 5cff638 fix: improve message for ignored files without a matching config (#​18404) (Francesco Trotta)

Documentation

  • 455f7fd docs: add section about including .gitignore files (#​18590) (Milos Djermanovic)
  • 721eafe docs: update info about universal files patterns (#​18587) (Francesco Trotta)
  • 8127127 docs: Update README (GitHub Actions Bot)
  • 55c2a66 docs: Update README (GitHub Actions Bot)
  • eb76282 docs: Update README (GitHub Actions Bot)
  • ff6e96e docs: baseConfig and overrideConfig can be arrays (#​18571) (Milos Djermanovic)
  • d2d83e0 docs: Add mention of eslint-transforms to v9 migration guide (#​18566) (Nicholas C. Zakas)
  • 9ce6832 docs: add callout box for unintuitive behavior (#​18567) (Ben McCann)
  • b8db99c docs: Add VS Code info to config migration guide (#​18555) (Nicholas C. Zakas)
  • 518a35c docs: Mention config migrator (#​18561) (Nicholas C. Zakas)
  • eb440fc docs: specifying files with arbitrary or no extension (#​18539) (Francesco Trotta)
  • 38c159e docs: Provide example of reading package.json for plugins meta (#​18530) (Nicholas C. Zakas)
  • d16a659 docs: add link to migration guide for --ext CLI option (#​18537) (Milos Djermanovic)
  • 73408de docs: add link to configuration file docs before examples (#​18535) (Milos Djermanovic)

Chores

v9.4.0

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Features

  • 89a4a0a feat: ignore IIFE's in the no-loop-func rule (#​17528) (Nitin Kumar)

Bug Fixes

  • f6534d1 fix: skip processor code blocks that match only universal patterns (#​18507) (Milos Djermanovic)
  • 7226ebd fix: allow implicit undefined return in no-constructor-return (#​18515) (Ali Rezvani)
  • 389744b fix: use @eslint/config-inspector@latest (#​18483) (唯然)
  • 70118a5 fix: func-style false positive with arrow functions and super (#​18473) (Milos Djermanovic)

Documentation

Chores

v9.3.0

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Features

  • b32153c feat: add overrides.namedExports to func-style rule (#​18444) (Percy Ma)
  • b67eba4 feat: add restrictedNamedExportsPattern to no-restricted-exports (#​18431) (Akul Srivastava)
  • 069aa68 feat: add option allowEscape to no-misleading-character-class rule (#​18208) (Francesco Trotta)
  • 05ef92d feat: deprecate multiline-comment-style & line-comment-position (#​18435) (唯然)
  • db0b174 feat: add enforceForInnerExpressions option to no-extra-boolean-cast (#​18222) (Kirk Waiblinger)

Bug Fixes

  • 8db0eff fix: Improve config error messages (#​18457) (Nicholas C. Zakas)
  • 5c28d9a fix: don't remove comments between key and value in object-shorthand (#​18442) (Kuba Jastrzębski)
  • 39fb0ee fix: object-shorthand loses type parameters when auto-fixing (#​18438) (dalaoshu)
  • 37eba48 fix: don't crash when fs.readFile returns promise from another realm (#​18416) (Milos Djermanovic)

Documentation

  • ceada8c docs: explain how to use "tsc waiting" label (#​18466) (Francesco Trotta)
  • 62e686c docs: Add troubleshooting info for plugin compatibility (#​18451) (Nicholas C. Zakas)
  • e17e1c0 docs: Update README (GitHub Actions Bot)
  • 2465a1e docs: Update README (GitHub Actions Bot)
  • d23574c docs: Clarify usage of no-unreachable with TypeScript (#​18445) (benj-dobs)
  • 1db9bae docs: Fix typos (#​18443) (Frieder Bluemle)
  • 7065196 docs: Update README (GitHub Actions Bot)
  • 04e7c6e docs: update deprecation notice of no-return-await (#​18433) (Tanuj Kanti)
  • e763512 docs: Link global ignores section in config object property list (#​18430) (MaoShizhong)
  • ac7f718 docs: reflect release of v9 in config migration guide (#​18412) (Peter Briggs)
  • 0de0909 docs: fix grammar in configuration file resolution (#​18419) (Mike McCready)

Chores

v9.2.0

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Features

  • 8485d76 feat: no-case-declarations add suggestions (#​18388) (Josh Goldberg ✨)
  • a498f35 feat: update Unicode letter detection in capitalized-comments rule (#​18375) (Francesco Trotta)

Bug Fixes

  • eeec413 fix: do not throw when defining a global named defineSetter (#​18364) (唯然)

Documentation

  • 0f5df50 docs: Update README (GitHub Actions Bot)
  • 1579ce0 docs: update wording regarding indirect eval (#​18394) (Kirk Waiblinger)
  • f12a02c docs: update to eslint v9 in custom-rule-tutorial (#​18383) (唯然)

Chores

v9.1.1

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Bug Fixes

v9.1.0

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Features

Bug Fixes

  • 8d18958 fix: Remove name from eslint/js packages (#​18368) (Nicholas C. Zakas)
  • 594eb0e fix: do not crash on error in fs.walk filter (#​18295) (Francesco Trotta)
  • 0d8cf63 fix: EMFILE errors (#​18313) (Nicholas C. Zakas)
  • e1ac0b5 fix: --inspect-config only for flat config and respect -c (#​18306) (Nicholas C. Zakas)
  • 09675e1 fix: --no-ignore should not apply to non-global ignores (#​18334) (Milos Djermanovic)

Documentation

  • fb50077 docs: include notes about globals in migration-guide (#​18356) (Gabriel Rohden)
  • 71c771f docs: Fix missing accessible name for scroll-to-top link (#​18329) (Germán Freixinós)
  • 200fd4e docs: indicate eslintrc mode for .eslintignore (#​18285) (Francesco Trotta)
  • 16b6a8b docs: Update README (GitHub Actions Bot)
  • df5f8a9 docs: paths and patterns difference in no-restricted-imports (#​18273) (Tanuj Kanti)
  • c537d76 docs: update npm init @​eslint/config generated file names (#​18298) (唯然)
  • e1e305d docs: fix linebreak-style examples (#​18262) (Francesco Trotta)
  • 113f51e docs: Mention package.json config support dropped (#​18305) (Nicholas C. Zakas)
  • 5c35321 docs: add eslintrc-only note to --rulesdir (#​18281) (Adam Lui 刘展鹏)

Build Related

  • 1fa6622 build: do not use --force flag to install dependencies (#​18284) (Francesco Trotta)

Chores

v9.0.0

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Breaking Changes

  • b7cf3bd fix!: correct camelcase rule schema for allow option (#​18232) (eMerzh)
  • 09bd7fe feat!: move AST traversal into SourceCode (#​18167) (Nicholas C. Zakas)
  • 79a95eb feat!: disallow multiple configuration comments for same rule (#​18157) (Milos Djermanovic)
  • 9163646 feat!: Rule Tester checks for missing placeholder data in the message (#​18073) (fnx)
  • 3c4d51d feat!: default for enforceForClassMembers in no-useless-computed-key (#​18054) (Francesco Trotta)
  • 47e60f8 feat!: Stricter rule test validations (#​17654) (fnx)
  • 1a94589 feat!: no-unused-vars default caughtErrors to 'all' (#​18043) (Josh Goldberg ✨)
  • 57089cb feat!: no-restricted-imports allow multiple config entries for same path (#​18021) (Milos Djermanovic)
  • 2e1d549 feat!: detect duplicate test cases (#​17955) (Bryan Mishkin)
  • 701f1af feat!: no-inner-declaration new default behaviour and option (#​17885) (Tanuj Kanti)
  • bde5105 fix!: handle --output-file for empty output when saving to disk (#​17957) (Nitin Kumar)
  • 07107a5 fix!: upgrade eslint-scope@8.0.0 (#​17942) (Milos Djermanovic)
  • 3ee0f6c fix!: no-unused-vars varsIgnorePattern behavior with catch arguments (#​17932) (Tanuj Kanti)
  • 51f8bc8 fix!: configuration comments with just severity should retain options (#​17945) (Milos Djermanovic)
  • d191bdd feat!: Remove CodePath#currentSegments (#​17936) (Milos Djermanovic)
  • 946ae00 feat!: FlatRuleTester -> RuleTester (#​17922) (Nicholas C. Zakas)
  • baff28c feat!: remove no-inner-declarations from eslint:recommended (#​17920) (Milos Djermanovic)
  • cadfbcd feat!: Rename FlatESLint to ESLint (#​17914) (Nicholas C. Zakas)
  • d1018fc feat!: skip running warnings in --quiet mode (#​17274) (Maddy Miller)
  • fb81b1c feat!: Set default schema: [], drop support for function-style rules (#​17792) (Milos Djermanovic)
  • 0b21e1f feat!: add two more cases to no-implicit-coercion (#​17832) (Gürgün Dayıoğlu)
  • 2916c63 feat!: Switch Linter to flat config by default (#​17851) (Nicholas C. Zakas)
  • 200518e fix!: Parsing 'exported' comment using parseListConfig (#​17675) (amondev)
  • bdd6ba1 feat!: Remove valid-jsdoc and require-jsdoc (#​17694) (Nicholas C. Zakas)
  • 12be307 fix!: Behavior of CLI when no arguments are passed (#​17644) (Nicholas C. Zakas)
  • 8fe8c56 feat!: Update shouldUseFlatConfig and CLI so flat config is default (#​17748) (Nicholas C. Zakas)
  • 60dea3e feat!: deprecate no-new-symbol, recommend no-new-native-nonconstructor (#​17710) (Francesco Trotta)
  • 5aa9c49 feat!: check for parsing errors in suggestion fixes (#​16639) (Bryan Mishkin)
  • b3e0bb0 feat!: assert suggestion messages are unique in rule testers (#​17532) (Josh Goldberg ✨)
  • e563c52 feat!: no-invalid-regexp make allowConstructorFlags case-sensitive (#​17533) (Josh Goldberg ✨)
  • e5f02c7 fix!: no-sequences rule schema correction (#​17878) (MHO)
  • 6ee3e9e feat!: Update eslint:recommended configuration (#​17716) (Milos Djermanovic)
  • c2cf85a feat!: drop support for string configurations in flat config array (#​17717) (Milos Djermanovic)
  • c314fd6 feat!: Remove SourceCode#getComments() (#​17715) (Milos Djermanovic)
  • ae78ff1 feat!: Remove deprecated context methods (#​17698) (Nicholas C. Zakas)
  • f71c328 feat!: Swap FlatESLint-ESLint, FlatRuleTester-RuleTester in API (#​17823) (Nicholas C. Zakas)
  • 5304da0 feat!: remove formatters except html, json(-with-metadata), and stylish (#​17531) (Josh Goldberg ✨)
  • e1e827f feat!: Require Node.js ^18.18.0 || ^20.9.0 || >=21.1.0 (#​17725) (Milos Djermanovic)

Features

  • d54a412 feat: Add --inspect-config CLI flag (#​18270) (Nicholas C. Zakas)
  • 97ce45b feat: Add reportUsedIgnorePattern option to no-unused-vars rule (#​17662) (Pearce Ropion)
  • 3e9fcea feat: Show config names in error messages (#​18256) (Nicholas C. Zakas)
  • de40874 feat: Rule Performance Statistics for flat ESLint (#​17850) (Mara Kiefer)
  • d85c436 feat: use-isnan report NaN in indexOf and lastIndexOf with fromIndex (#​18225) (Tanuj Kanti)
  • b8fb572 feat: add reportUnusedFallthroughComment option to no-fallthrough rule (#​18188) (Kirk Waiblinger)
  • 1c173dc feat: add ignoreClassWithStaticInitBlock option to no-unused-vars (#​18170) (Tanuj Kanti)
  • a451b32 feat: make no-misleading-character-class report more granular errors (#​18082) (Francesco Trotta)
  • c49ed63 feat: update complexity rule for optional chaining & default values (#​18152) (Mathias Schreck)
  • 11144a2 feat: no-restricted-imports option added allowImportNames (#​16196) (M Pater)
  • 74124c2 feat: add suggestions to use-isnan in indexOf & lastIndexOf calls (#​18063) (StyleShit)
  • 53f0f47 feat: Add loadESLint() API method for v9 (#​18097) (Nicholas C. Zakas)
  • 2d11d46 feat: add suggestions to use-isnan in binary expressions (#​17996) (StyleShit)
  • 26093c7 feat: fix false negatives in no-this-before-super (#​17762) (Yosuke Ota)
  • 5471e43 feat: convert unsafe autofixes to suggestions in no-implicit-coercion (#​17985) (Gürgün Dayıoğlu)
  • e3051be feat: emit warning when .eslintignore file is detected (#​17952) (Nitin Kumar)
  • a630edd feat: maintain latest ecma version in ESLint (#​17958) (Milos Djermanovic)
  • b4e0503 feat: add no-useless-assignment rule (#​17625) (Yosuke Ota)
  • 287c4b7 feat: no-misleading-character-class granular errors (#​17515) (Josh Goldberg ✨)
  • 8792464 feat: Enable eslint.config.mjs and eslint.config.cjs (#​17909) (Nicholas C. Zakas)
  • 24ce927 feat: warn by default for unused disable directives (#​17879) (Bryan Mishkin)

Bug Fixes

  • 610c148 fix: Support using declarations in no-lone-blocks (#​18269) (Kirk Waiblinger)
  • e508800 fix: rule tester ignore irrelevant test case properties (#​18235) (fnx)
  • a129acb fix: flat config name on ignores object (#​18258) (Nicholas C. Zakas)
  • dadc5bf fix: constructor-super false positives with loops (#​18226) (Milos Djermanovic)
  • ae8103d fix: load plugins in the CLI in flat config mode (#​18185) (Francesco Trotta)
  • e37153f fix: improve error message for invalid rule config (#​18147) (Nitin Kumar)
  • af6e170 fix: stop linting files after an error (#​18155) (Francesco Trotta)
  • 0cb4914 fix: validate options when comment with just severity enables rule (#​18133) (Milos Djermanovic)
  • c4d26fd fix: use-isnan doesn't report on SequenceExpressions (#​18059) (StyleShit)
  • 39076fb fix: handle absolute file paths in RuleTester (#​17989) (Nitin Kumar)
  • 6d11f3d fix: Ensure config keys are printed for config errors (#​17980) (Nicholas C. Zakas)
  • 806f708 fix: no-misleading-character-class edge cases with granular errors (#​17970) (Milos Djermanovic)
  • f182114 fix: deep merge behavior in flat config (#​17906) (Francesco Trotta)
  • b577e8a fix: allow circular references in config (#​17752) (Francesco Trotta)

Documentation

  • e151050 docs: update get-started to the new @eslint/create-config (#​18217) (唯然)
  • 94178ad docs: mention about name field in flat config (#​18252) (Anthony Fu)
  • 1765c24 docs: add Troubleshooting page (#​18181) (Josh Goldberg ✨)
  • 96607d0 docs: version selectors synchronization (#​18260) (Milos Djermanovic)
  • 651ec91 docs: remove /* eslint-env */ comments from rule examples (#​18249) (Milos Djermanovic)
  • 950c4f1 docs: Update README (GitHub Actions Bot)
  • 12f5746 docs: add info about dot files and dir in flat config (#​18239) (Tanuj Kanti)
  • b93f408 docs: update shared settings example (#​18251) (Tanuj Kanti)
  • 26384d3 docs: fix ecmaVersion in one example, add checks (#​18241) (Milos Djermanovic)
  • 7747097 docs: Update MR review process (#​18233) (Nicholas C. Zakas)
  • b07d427 docs: fix typo (#​18246) (Kirill Gavrilov)
  • 778082d docs: add Glossary page (#​18187) (Josh Goldberg ✨)
  • 239a7e2 docs: Clarify the description of sort-imports options (#​18198) (gyeongwoo park)
  • 4769c86 docs: fix incorrect example in no-lone-blocks (#​18215) (Tanuj Kanti)
  • 5251327 docs: Update README (GitHub Actions Bot)
  • 1dc8618 docs: Update README (GitHub Actions Bot)
  • ba1c1bb docs: Update README (GitHub Actions Bot)
  • 337cdf9 docs: Explain limitations of RuleTester fix testing (#​18175) (Nicholas C. Zakas)
  • c7abd89 docs: Explain Node.js version support (#​18176) (Nicholas C. Zakas)
  • d961eeb docs: show red underlines in examples in rules docs (#​18041) (Yosuke Ota)
  • 558274a docs: Update README (GitHub Actions Bot)
  • 2908b9b docs: Update release documentation (#​18174) (Nicholas C. Zakas)
  • 1f1260e docs: replace HackerOne link with GitHub advisory (#​18165) (Francesco Trotta)
  • e5ef3cd docs: add inline cases condition in no-fallthrough (#​18158) (Tanuj Kanti)
  • 450d0f0 docs: fix ignore option docs (#​18154) (Francesco Trotta)
  • 5fe095c docs: show v8.57.0 as latest version in dropdown (#​18142) (Milos Djermanovic)
  • 7db5bb2 docs: Show prerelease version in dropdown (#​18135) (Nicholas C. Zakas)
  • 73a5f06 docs: Update README (GitHub Actions Bot)
  • f95cd27 docs: Disallow multiple rule configuration comments in the same example (#​18116) (Milos Djermanovic)
  • d8068ec docs: Update link for schema examples (#​18112) (Svetlana)
  • f1c7e6f docs: Switch to Ethical Ads (#​18090) (Strek)
  • 15c143f docs: JS Foundation -> OpenJS Foundation in MR template (#​18092) (Nicholas C. Zakas)
  • 6ea339e docs: add stricter rule test validations to v9 migration guide (#​18085) (Milos Djermanovic)
  • 3c816f1 docs: use relative link from CLI to core concepts (#​18083) (Milos Djermanovic)
  • 9458735 docs: fix malformed eslint config comments in rule examples (#​18078) (Francesco Trotta)
  • 07a1ada docs: link from --fix CLI doc to the relevant core concept (#​18080) (Bryan Mishkin)
  • b844324 docs: Update team responsibilities (#​18048) (Nicholas C. Zakas)
  • aadfb60 docs: document languageOptions and other v9 changes for context (#​18074) (fnx)
  • 857e242 docs: tweak explanation for meta.docs rule properties (#​18057) (Bryan Mishkin)
  • 10485e8 docs: recommend messageId over message for reporting rule violations (#​18050) (Bryan Mishkin)
  • 98b5ab4 docs: Update README (GitHub Actions Bot)
  • 505fbf4 docs: update no-restricted-imports rule (#​18015) (Tanuj Kanti)
  • c25b4af docs: Update README (GitHub Actions Bot)
  • 33d1ab0 docs: add more examples to flat config ignores docs (#​18020) (Milos Djermanovic)
  • e6eebca docs: Update sort-keys options properties count (#​18025) (LB (Ben Johnston))
  • 1fedfd2 docs: Improve flat config ignores docs (#​17997) (Nicholas C. Zakas)
  • 38b9b06 docs: update valid-typeof rule (#​18001) (Tanuj Kanti)
  • b4abfea docs: Update note about ECMAScript support (#​17991) (Francesco Trotta)
  • 6788873 docs: Update release blog post template (#​17994) (Nicholas C. Zakas)
  • 1f37442 docs: Add sections on non-npm plugin configuration (#​17984) (Nicholas C. Zakas)
  • 96307da docs: migration guide entry for no-inner-declarations (#​17977) (Tanuj Kanti)
  • 40be60e docs: Update README (GitHub Actions Bot)
  • d31c180 docs: fix number of code-path events on custom rules page (#​17969) (Richard Hunter)
  • 1529ab2 docs: reorder entries in v9 migration guide (#​17967) (Milos Djermanovic)
  • 9507525 docs: Explain how to combine configs (#​17947) (Nicholas C. Zakas)
  • 7c78576 docs: Add more removed context methods to migrate to v9 guide (#​17951) (Milos Djermanovic)
  • 3a877d6 docs: Update removed CLI flags migration (#​17939) (Nicholas C. Zakas)
  • 4a9cd1e docs: Update Linter API for v9 (#​17937) (Milos Djermanovic)
  • 2a8eea8 docs: update docs for v9.0.0-alpha.0 (#​17929) (Milos Djermanovic)
  • 7f0ba51 docs: show NEXT in version selectors (#​17911) (Milos Djermanovic)
  • 0a7911e docs: add flat config default to v9 migration guide (#​17927) (Milos Djermanovic)
  • 94f8065 docs: Add CLI updates to migrate to v9 guide (#​17924) (Nicholas C. Zakas)
  • 16187f2 docs: Add exported and string config notes to migrate to v9 guide (#​17926) (Nicholas C. Zakas)
  • 3ae50cc docs: Add RuleTester changes to migrate to v9 guide (#​17923) (Nicholas C. Zakas)
  • 0831b58 docs: add rule changes to v9 migration guide (#​17925) (Milos Djermanovic)
  • 037abfc docs: update API docs (#​17919) (Milos Djermanovic)
  • afc3c03 docs: add function-style and meta.schema changes to v9 migration guide (#​17912) (Milos Djermanovic)
  • 1da0723 docs: update eslint:recommended section in Migrate to v9.x (#​17908) (Milos Djermanovic)
  • f55881f docs: remove configuration-files-new.md (#​17907) (Milos Djermanovic)
  • 63ae191 docs: Migrate to v9.0.0 (#​17905) (Nicholas C. Zakas)
  • e708496 docs: Switch to flat config by default (#​17840) (Nicholas C. Zakas)
  • fdf0424 docs: Update Create a Plugin for flat config (#​17826) (Nicholas C. Zakas)
  • e6a91bd docs: Switch shareable config docs to use flat config (#​17827) (Nicholas C. Zakas)
  • 3831fb7 docs: updated examples of max-lines rule (#​17898) (Tanuj Kanti)
  • cd1ac20 docs: Update README (GitHub Actions Bot)

Build Related

  • 26010c2 Build: changelog update for 9.0.0-rc.0 (Jenkins)
  • b91f9dc build: fix TypeError in prism-eslint-hooks.js (#​18209) (Francesco Trotta)
  • d7ec0d1 Build: changelog update for 9.0.0-beta.2 (Jenkins)
  • fd9c0a9 Build: changelog update for 9.0.0-beta.1 (Jenkins)
  • c9f2f33 build: changelog update for 8.57.0 (#​18144) (Milos Djermanovic)
  • 1bbc495 Build: changelog update for 9.0.0-beta.0 (Jenkins)
  • 96f8877 Build: changelog update for 9.0.0-alpha.2 (Jenkins)
  • 52d5e7a Build: changelog update for 9.0.0-alpha.1 (Jenkins)
  • c2bf27d build: update docs files when publishing prereleases (#​17940) (Milos Djermanovic)
  • e91d85d Build: changelog update for 9.0.0-alpha.0 (Jenkins)

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