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This PR contains the following updates:
^8.56.0
->^9.0.0
Release Notes
eslint/eslint (eslint)
v9.15.0
Compare Source
Features
01557ce
feat: Implement Language#normalizeLanguageOptions() (#19104) (Nicholas C. Zakas)2edc0e2
feat: add meta.defaultOptions (#17656) (Josh Goldberg ✨)bdec50e
feat: fixno-useless-computed-key
false negative with__proto__
(#19123) (Milos Djermanovic)3087c9e
feat: addmeta
object to@eslint/js
plugin (#19095) (Francesco Trotta)Bug Fixes
fd33f13
fix: update types forno-restricted-imports
rule (#19060) (Nitin Kumar)bd35098
fix: switch away from Node.js node:assert and AssertionError (#19082) (Josh Goldberg ✨)9db5b15
fix: unsafe report forno-lonely-if
(#19087) (Abraham Guo)68fa497
fix: ignore files on a different drive on Windows (#19069) (Francesco Trotta)4ce625a
fix: upgrade @humanwhocodes/retry@0.4.1 to avoid debug logs (#19102) (Milos Djermanovic)Documentation
d927920
docs: fix styles in no-js mode (#18916) (Tanuj Kanti)09bc2a8
docs: Update README (GitHub Actions Bot)39089c8
docs: addno-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 onindent
,quotes
andsemi
rule types (#19090) (Marco Pasqualetti)Chores
2967d91
chore: upgrade @eslint/js@9.15.0 (#19133) (Milos Djermanovic)b441bee
chore: package.json update for @eslint/js release (Jenkins)7d6bf4a
chore: upgrade @eslint/core@0.9.0 (#19131) (Milos Djermanovic)902e707
chore: upgrade @eslint/plugin-kit@0.2.3 (#19130) (Milos Djermanovic)5ff6c1d
chore: bump cross-spawn (#19125) (Ian Bobinac)cceccc7
chore: update dependency @eslint/json to ^0.6.0 (#19117) (renovate[bot])0da3f73
chore: update algolia referrer (#19114) (Strek)4f08332
ci: unpintrunk-io/trunk-action
(#19108) (Francesco Trotta)6b75683
perf: optimizetext-table
by replacing regex withtrimEnd
(#19061) (Nitin Kumar)v9.14.0
Compare Source
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
151c965
docs: updatecontext.languageOptions.parser
description (#19084) (Nitin Kumar)dc34f94
docs: Update README (GitHub Actions Bot)f16e846
docs: Update README (GitHub Actions Bot)ee0a77e
docs: change link from @types/eslint to lib/types (#19049) (Karl Horky)50f03a1
docs: Clarify global ignores in config migration guide (#19032) (Milos Djermanovic)Build Related
37c9177
build: update@wdio/*
dependencies (#19068) (Francesco Trotta)35a8858
build: exclude flawed dendency versions (#19065) (Francesco Trotta)Chores
f36cb16
chore: upgrade @eslint/js@9.14.0 (#19086) (Milos Djermanovic)28be447
chore: package.json update for @eslint/js release (Jenkins)f48a2a0
test: addno-invalid-regexp
tests with RegExp Modifiers (#19075) (Milos Djermanovic)425202e
perf: Fix caching in config loaders (#19042) (Milos Djermanovic)3d44b3c
ci: run tests in Node.js 23 (#19055) (Francesco Trotta)7259627
test: ensure tmp directory cleanup incheck-emfile-handling.js
(#19036) (Livia Medeiros)v9.13.0
Compare Source
Features
381c32b
feat: Allow languages to providedefaultLanguageOptions
(#19003) (Milos Djermanovic)bf723bd
feat: Improve eslintrc warning message (#19023) (Milos Djermanovic)1def4cd
feat: drop support for jiti v1.21 (#18996) (Francesco Trotta)f879be2
feat: exportESLint.defaultConfig
(#18983) (Nitin Kumar)Bug Fixes
78836d4
fix: update thecomplexity
rule type (#19027) (Nitin Kumar)064c8b6
fix: update rule types (#18925) (Nitin Kumar)Documentation
abdbfa8
docs: markLintMessage#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
68d2d9d
chore: upgrade to@eslint/[email protected]
and@eslint/core@^0.7.0
(#19034) (Francesco Trotta)2211f0a
chore: package.json update for @eslint/js release (Jenkins)c7abaef
perf: using Node.js compile cache (#19012) (唯然)1d7c077
chore: add pkg.type "commonjs" (#19011) (唯然)468e3bd
test: fixESLint
tests (#19021) (Francesco Trotta)ed4635f
ci: upgrade [email protected] (#18992) (Milos Djermanovic)efad767
chore: remove unused ignore dependency (#18993) (Amaresh S M)v9.12.0
Compare Source
Features
5a6a053
feat: update tojiti
v2 (#18954) (Arya Emami)17a07fb
feat: Hooks for test cases (RuleTester) (#18771) (Anna Bocharova)2ff0e51
feat: Implement alternate config lookup (#18742) (Nicholas C. Zakas)2d17453
feat: Implement modified cyclomatic complexity (#18896) (Dmitry Pashkevich)Bug Fixes
ea380ca
fix: Upgrade retry to avoid EMFILE errors (#18986) (Nicholas C. Zakas)fdd6319
fix: Issues with type definitions (#18940) (Arya Emami)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 inid-match
rule (#18944) (Jay)Chores
555aafd
chore: upgrade to@eslint/[email protected]
(#18987) (Francesco Trotta)873ae60
chore: package.json update for @eslint/js release (Jenkins)d0a5414
refactor: replace strip-ansi with native module (#18982) (Cristopher)b827029
chore: Enable JSON5 linting (#18979) (Milos Djermanovic)8f55ca2
chore: Upgrade espree, eslint-visitor-keys, eslint-scope (#18962) (Nicholas C. Zakas)c1a2725
chore: update dependency mocha to ^10.7.3 (#18945) (Milos Djermanovic)v9.11.1
Compare Source
Bug Fixes
20fd916
fix: add@eslint/core
,@types/estree
, &@types/json-schema
deps (#18938) (Nitin Kumar)2738322
fix: add missing types forrequire-atomic-updates
rule (#18937) (Kristóf Poduszló)d71ff30
fix: add missing types forobject-shorthand
rule (#18935) (Kristóf Poduszló)561cadc
fix: add missing types forno-unsafe-negation
rule (#18932) (Kristóf Poduszló)8843656
fix: add missing types forno-underscore-dangle
rule (#18931) (Kristóf Poduszló)92cde5c
fix: add missing types forno-shadow
rule (#18930) (Kristóf Poduszló)b3cbe11
fix: add missing types forno-sequences
rule (#18929) (Kristóf Poduszló)976f77f
fix: add missing types forno-unused-expressions
rule (#18933) (Kristóf Poduszló)Documentation
3eff709
docs: replace deprecatedLinter.FlatConfig
type withLinter.Config
(#18941) (Carlos Meira)Chores
df4a859
chore: upgrade @eslint/js@9.11.1 (#18943) (Milos Djermanovic)36d8095
chore: package.json update for @eslint/js release (Jenkins)v9.11.0
Compare Source
Features
ec30c73
feat: add "eslint/universal" to exportLinter
(#18883) (唯然)c591da6
feat: Add language to types (#18917) (Nicholas C. Zakas)492eb8f
feat: limit the name given toImportSpecifier
inid-length
(#18861) (Tanuj Kanti)19c6856
feat: Addno-useless-constructor
suggestion (#18799) (Jordan Thomson)a48f8c2
feat: add typeFormatterFunction
, updateLoadedFormatter
(#18872) (Francesco Trotta)Bug Fixes
5e5f39b
fix: add missing types forno-restricted-exports
rule (#18914) (Kristóf Poduszló)8f630eb
fix: add missing types forno-param-reassign
options (#18906) (Kristóf Poduszló)d715781
fix: add missing types forno-extra-boolean-cast
options (#18902) (Kristóf Poduszló)2de5742
fix: add missing types forno-misleading-character-class
options (#18905) (Kristóf Poduszló)c153084
fix: add missing types forno-implicit-coercion
options (#18903) (Kristóf Poduszló)fa11b2e
fix: add missing types forno-empty-function
options (#18901) (Kristóf Poduszló)a0deed1
fix: add missing types forcamelcase
options (#18897) (Kristóf Poduszló)Documentation
e4e5709
docs: correctprefer-object-has-own
type definition comment (#18924) (Nitin Kumar)91cbd18
docs: add unicode abbreviations in no-irregular-whitespace rule (#18894) (Alix Royere)59cfc0f
docs: clarifyresultsMeta
inLoadedFormatter
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
ca21a64
chore: upgrade @eslint/js@9.11.0 (#18927) (Milos Djermanovic)a10f90a
chore: package.json update for @eslint/js release (Jenkins)e4e02cc
refactor: Extract processor logic into ProcessorService (#18818) (Nicholas C. Zakas)6d4484d
chore: updates for v8.57.1 release (Jenkins)71f37c5
refactor: use optional chaining when validating config rules (#18893) (lucasrmendonca)2c2805f
chore: Add PR note to all templates (#18892) (Nicholas C. Zakas)7b852ce
refactor: useDirective
class from@eslint/plugin-kit
(#18884) (Milos Djermanovic)d594ddd
chore: update dependency @eslint/core to ^0.6.0 (#18863) (renovate[bot])78b2421
chore: Update change.yml (#18882) (Nicholas C. Zakas)a416f0a
chore: enable$ExpectType
comments in .ts files (#18869) (Francesco Trotta)v9.10.0
Compare Source
Features
301b90d
feat: Add types (#18854) (Nicholas C. Zakas)bcf0df5
feat: limit namespace import identifier in id-length rule (#18849) (ChaedongIm)45c18e1
feat: addrequireFlag
option torequire-unicode-regexp
rule (#18836) (Brett Zamir)183b459
feat: add error message for duplicate flags inno-invalid-regexp
(#18837) (Tanuj Kanti)c69b406
feat: report duplicate allowed flags inno-invalid-regexp
(#18754) (Tanuj Kanti)Documentation
bee0e7a
docs: update README (#18865) (Milos Djermanovic)5d80b59
docs: specify thatruleId
can benull
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
24c3ff7
chore: upgrade to @eslint/js@9.10.0 (#18866) (Francesco Trotta)1ebdde1
chore: package.json update for @eslint/js release (Jenkins)e8fc5bd
chore: update dependency @eslint/core to ^0.5.0 (#18848) (renovate[bot])343f992
refactor: don't usenode.value
when removing unused directives (#18835) (Milos Djermanovic)3db18b0
refactor: Extract FileContext into class (#18831) (Nicholas C. Zakas)931d650
refactor: Use @eslint/plugin-kit (#18822) (Nicholas C. Zakas)ed5cf0c
chore: update dependency @eslint/json to ^0.4.0 (#18829) (Milos Djermanovic)d1f0831
chore: added missing ids (#18817) (Strek)ec92813
refactor: Config class (#18763) (Nicholas C. Zakas)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/[email protected]
(#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/[email protected]
(#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](https://togithub.com/eslint/eslint/Configuration
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