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This PR contains the following updates:
^8.57.0
->^9.0.0
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Release Notes
eslint/eslint (eslint)
v9.9.1
Compare Source
Bug Fixes
9bde90c
fix: add logic to handlefixTypes
inlintText()
(#18736) (Amaresh S M)Documentation
4840930
docs: Update README with version support and clean up content (#18804) (Nicholas C. Zakas)f61f40d
docs: Update globals examples (#18805) (Nicholas C. Zakas)241fcea
docs: Use and define languages (#18795) (Nicholas C. Zakas)5dbdd63
docs: eslint-plugin-markdown -> @eslint/markdown (#18797) (Nicholas C. Zakas)c6c8ddd
docs: update links to eslint-visitor-keys repo (#18796) (Francesco Trotta)f981d05
docs: Update README (GitHub Actions Bot)b516974
docs: update links toeslint/js
repo (#18781) (Francesco Trotta)fb7a3f5
docs: update note for package managers (#18779) (Jay)Chores
b0c34d0
chore: upgrade to @eslint/js@9.9.1 (#18809) (Francesco Trotta)cd5a0da
chore: package.json update for @eslint/js release (Jenkins)e112642
refactor: Extract parsing logic from Linter (#18790) (Nicholas C. Zakas)0f68a85
chore: use eslint-plugin-yml on yaml files only (#18801) (Milos Djermanovic)f8d1b3c
chore: update dependencies for browser tests (#18794) (Christian Bromann)aed2624
chore: update dependency @eslint/config-array to ^0.18.0 (#18788) (renovate[bot])5c29128
chore: update dependency @eslint/core to ^0.4.0 (#18789) (renovate[bot])5d66fb2
chore: migrate linting workflow to use trunk check meta-linter (#18643) (Chris Clearwater)bf96855
chore: add ids to github issue templates (#18775) (Strek)v9.9.0
Compare Source
Features
41d0206
feat: Add support for TS config files (#18134) (Arya Emami)3a4eaf9
feat: add suggestion torequire-await
to removeasync
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
461b2c3
chore: upgrade to@eslint/js@9.9.0
(#18765) (Francesco Trotta)59dba1b
chore: package.json update for @eslint/js release (Jenkins)fea8563
chore: update dependency @eslint/core to ^0.3.0 (#18724) (renovate[bot])aac191e
chore: update dependency @eslint/json to ^0.3.0 (#18760) (renovate[bot])b97fa05
chore: update wdio dependencies for more stable tests (#18759) (Christian Bromann)v9.8.0
Compare Source
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
282df1a
docs: Add system theme option (#18617) (Amaresh S M)53b1ff0
docs: Debug config docs (#18698) (Nicholas C. Zakas)a7016a5
docs: fix search input stylings (#18682) (Amaresh S M)Build Related
4514424
build: Enable JSON linting (#18681) (Nicholas C. Zakas)Chores
deee448
chore: upgrade to@eslint/js@9.8.0
(#18720) (Francesco Trotta)4aaf2b3
chore: package.json update for @eslint/js release (Jenkins)8e1a627
chore: update dependency @eslint/core to ^0.2.0 (#18700) (renovate[bot])v9.7.0
Compare Source
Features
7bd9839
feat: add support for es2025 duplicate named capturing groups (#18630) (Yosuke Ota)1381394
feat: addregex
option inno-restricted-imports
(#18622) (Nitin Kumar)Bug Fixes
14e9f81
fix: destructuring in catch clause inno-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 optioncwd
(#18641) (Francesco Trotta)Chores
793b718
chore: upgrade @eslint/js@9.7.0 (#18680) (Francesco Trotta)7ed6f9a
chore: package.json update for @eslint/js release (Jenkins)7bcda76
refactor: Add type references (#18652) (Nicholas C. Zakas)51bf57c
chore: add tech sponsors through actions (#18624) (Strek)6320732
refactor: don't useparent
property inNodeEventGenerator
(#18653) (Milos Djermanovic)9e6d640
refactor: move "Parsing error" prefix adding to Linter (#18650) (Milos Djermanovic)v9.6.0
Compare Source
Features
e2b16e2
feat: Implement feature flags (#18516) (Nicholas C. Zakas)8824aa1
feat: addecmaVersion: 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: improveno-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
b15ee30
chore: upgrade @eslint/js@9.6.0 (#18632) (Milos Djermanovic)d655503
chore: package.json update for @eslint/js release (Jenkins)7c78ad9
refactor: Use language.visitorKeys and check for non-JS SourceCode (#18625) (Nicholas C. Zakas)69ff64e
refactor: Return value of applyInlineConfig() (#18623) (Nicholas C. Zakas)d2d06f7
refactor: use/
separator when adjustingignorePatterns
on Windows (#18613) (Milos Djermanovic)6421973
refactor: fix disable directives for languages with 0-based lines (#18605) (Milos Djermanovic)0a13539
refactor: Allow optional methods for languages (#18604) (Nicholas C. Zakas)c7ddee0
chore: make internal-rules not being a package (#18601) (Milos Djermanovic)3379164
chore: remove.eslintrc.js
(#18011) (唯然)d0c3a32
chore: update knip (with webdriver-io plugin) (#18594) (Lars Kappert)v9.5.0
Compare Source
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 universalfiles
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
andoverrideConfig
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
f588160
chore: upgrade @eslint/js@9.5.0 (#18591) (Milos Djermanovic)5890841
chore: package.json update for @eslint/js release (Jenkins)e9f4ccd
chore: remove unused eslint-disable directive (#18589) (Milos Djermanovic)4b23ffd
refactor: Move JS parsing logic into JS language (#18448) (Nicholas C. Zakas)1495b93
chore: update WebdriverIO packages (#18558) (Christian Bromann)cea7ede
chore: add website donate link instead of opencollective (#18582) (Strek)ec94880
chore: package.json update for eslint-config-eslint release (Jenkins)6912586
chore: extract formatting rules into separate config (#18560) (Milos Djermanovic)9738f7e
ci: fix CLI flags for c8, raise thresholds (#18554) (Francesco Trotta)c6de7bb
chore: update dependency markdownlint-cli to ^0.41.0 (#18538) (renovate[bot])2c8fd34
ci: pin @wdio/browser-runner v8.36.0 (#18540) (唯然)v9.4.0
Compare Source
Features
89a4a0a
feat: ignore IIFE's in theno-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 inno-constructor-return
(#18515) (Ali Rezvani)389744b
fix: use@eslint/config-inspector@latest
(#18483) (唯然)70118a5
fix:func-style
false positive with arrow functions andsuper
(#18473) (Milos Djermanovic)Documentation
d7ab6f5
docs: update theme when whenprefers-color-scheme
changes (#18510) (Nitin Kumar)525fdff
docs: fix components files (#18519) (Tanuj Kanti)80747d2
docs: refactorprefer-destructuring
rule (#18472) (Tanuj Kanti)f06e0b5
docs: clarify func-style (#18477) (Cameron Steffen)Chores
010dd2e
chore: upgrade to@eslint/js@9.4.0
(#18534) (Francesco Trotta)5e1b5dc
chore: package.json update for @eslint/js release (Jenkins)594145f
refactor: switch to@eslint/config-array
(#18527) (Francesco Trotta)v9.3.0
Compare Source
Features
b32153c
feat: addoverrides.namedExports
tofunc-style
rule (#18444) (Percy Ma)b67eba4
feat: addrestrictedNamedExportsPattern
tono-restricted-exports
(#18431) (Akul Srivastava)069aa68
feat: add optionallowEscape
tono-misleading-character-class
rule (#18208) (Francesco Trotta)05ef92d
feat: deprecatemultiline-comment-style
&line-comment-position
(#18435) (唯然)db0b174
feat: addenforceForInnerExpressions
option tono-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 whenfs.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 ofno-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 ofno-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
58e2719
chore: update dependencies for v9.3.0 release (#18469) (Francesco Trotta)b681ecb
chore: package.json update for @eslint/js release (Jenkins)06f1d1c
chore: update dependency @humanwhocodes/retry to ^0.3.0 (#18463) (renovate[bot])a63ed72
refactor: Usenode:
protocol for built-in Node.js modules (#18434) (Milos Djermanovic)040700a
chore: update dependency markdownlint-cli to ^0.40.0 (#18425) (renovate[bot])f47847c
chore: update actions/stale action to v9 (#18426) (renovate[bot])c18ad25
chore: update actions/upload-artifact action to v4 (#18427) (renovate[bot])27e3060
chore: Disable documentation label (#18423) (Nicholas C. Zakas)v9.2.0
Compare Source
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
b346605
chore: upgrade @eslint/js@9.2.0 (#18413) (Milos Djermanovic)c4c18e0
chore: package.json update for @eslint/js release (Jenkins)284722c
chore: package.json update for eslint-config-eslint release (Jenkins)347d44f
chore: remove eslintrc export from eslint-config-eslint (#18400) (Milos Djermanovic)f316e20
ci: run tests in Node.js 22 (#18393) (Francesco Trotta)v9.1.1
Compare Source
Bug Fixes
a26b402
fix: use @eslint/create-config latest (#18373) (唯然)v9.1.0
Compare Source
Features
03068f1
feat: Provide helpful error message for nullish configs (#18357) (Nicholas C. Zakas)751b518
feat: replace dependency graphemer withIntl.Segmenter
(#18110) (Francesco Trotta)4d11e56
feat: addname
to eslint configs (#18289) (唯然)1cbe1f6
feat: allowwhile(true)
inno-constant-condition
(#18286) (Tanuj Kanti)0db676f
feat: addIntl
in es6 globals (#18318) (唯然)Bug Fixes
8d18958
fix: Remove name from eslint/js packages (#18368) (Nicholas C. Zakas)594eb0e
fix: do not crash on error infs.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
andpatterns
difference inno-restricted-imports
(#18273) (Tanuj Kanti)c537d76
docs: updatenpm init @​eslint/config
generated file names (#18298) (唯然)e1e305d
docs: fixlinebreak-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
d9a2983
chore: upgrade @eslint/js to v9.1.1 (#18367) (Francesco Trotta)50d406d
chore: package.json update for @eslint/js release (Jenkins)155c71c
chore: package.json update for @eslint/js release (Jenkins)0588fc5
refactor: Move directive gathering to SourceCode (#18328) (Nicholas C. Zakas)9048e21
chore: lintdocs/src/_data
js files (#18335) (Milos Djermanovic)4820790
chore: upgrade globals@15.0.0 dev dependency (#18332) (Milos Djermanovic)698d9ff
chore: upgrade jsdoc & unicorn plugins in eslint-config-eslint (#18333) (Milos Djermanovic)32c08cf
chore: drop Node < 18 and use @eslint/js v9 in eslint-config-eslint (#18323) (Milos Djermanovic)a76fb55
chore: @eslint-community/eslint-plugin-eslint-comments v4.3.0 (#18319) (Milos Djermanovic)78e45b1
chore: eslint-plugin-eslint-plugin v6.0.0 (#18316) (唯然)36103a5
chore: eslint-plugin-n v17.0.0 (#18315) (唯然)v9.0.0
Compare Source
Breaking Changes
b7cf3bd
fix!: correctcamelcase
rule schema forallow
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 forenforceForClassMembers
inno-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-varsvarsIgnorePattern
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!: removeno-inner-declarations
fromeslint: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 defaultschema: []
, drop support for function-style rules (#17792) (Milos Djermanovic)0b21e1f
feat!: add two more cases tono-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!: Updateeslint:recommended
configuration (#17716) (Milos Djermanovic)c2cf85a
feat!: drop support for string configurations in flat config array (#17717) (Milos Djermanovic)c314fd6
feat!: RemoveSourceCode#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: AddreportUsedIgnorePattern
option tono-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](https://redirect.github.com/eslint/eslint/Configuration
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