flashlight chore(deps): update dependency eslint to v9

Note: This PR body was truncated due to platform limits.

This PR contains the following updates:

Package	Change	Age	Confidence
eslint (source)	`^8.57.0` -> `^9.0.0`

Release Notes

eslint/eslint (eslint)

Features

ce40f74 feat: update complexity rule to only highlight function header (#20048) (Atul Nair)
e37e590 feat: correct no-loss-of-precision false positives with e notation (#20187) (Francesco Trotta)

Bug Fixes

50c3dfd fix: improve type support for isolated dependencies in pnpm (#20201) (Francesco Trotta)
a1f06a3 fix: correct SourceCode typings (#20114) (Pixel998)

Documentation

462675a docs: improve web accessibility by hiding non-semantic character (#20205) (루밀LuMir)
c070e65 docs: correct formatting in no-irregular-whitespace rule documentation (#20203) (루밀LuMir)
b39e71a docs: Update README (GitHub Actions Bot)
cd39983 docs: move custom-formatters type descriptions to nodejs-api (#20190) (Percy Ma)

Chores

d17c795 chore: upgrade @eslint/js@9.38.0 (#20221) (Milos Djermanovic)
25d0e33 chore: package.json update for @eslint/js release (Jenkins)
c82b5ef refactor: Use types from @eslint/core (#20168) (Nicholas C. Zakas)
ff31609 ci: add Node.js 25 to ci.yml (#20220) (루밀LuMir)
004577e ci: bump github/codeql-action from 3 to 4 (#20211) (dependabot[bot])
eac71fb test: remove use of nodejsScope option of eslint-scope from tests (#20206) (Milos Djermanovic)
4168a18 chore: fix typo in legacy-eslint.js (#20202) (Sweta Tanwar)
205dbd2 chore: fix typos (#20200) (ntnyq)
dbb200e chore: use team member's username when name is not available in data (#20194) (Milos Djermanovic)
8962089 chore: mark deprecated rules as available until v11.0.0 (#20184) (Pixel998)

`v9.37.0`

Compare Source

Features

39f7fb4 feat: preserve-caught-error should recognize all static "cause" keys (#20163) (Pixel998)
f81eabc feat: support TS syntax in no-restricted-imports (#19562) (Nitin Kumar)

Bug Fixes

a129cce fix: correct no-loss-of-precision false positives for leading zeros (#20164) (Francesco Trotta)
09e04fc fix: add missing AST token types (#20172) (Pixel998)
861c6da fix: correct ESLint typings (#20122) (Pixel998)

Documentation

b950359 docs: fix typos across the docs (#20182) (루밀LuMir)
42498a2 docs: improve ToC accessibility by hiding non-semantic character (#20181) (Percy Ma)
29ea092 docs: Update README (GitHub Actions Bot)
5c97a04 docs: show availableUntil in deprecated rule banner (#20170) (Pixel998)
90a71bf docs: update README files to add badge and instructions (#20115) (루밀LuMir)
1603ae1 docs: update references from master to main (#20153) (루밀LuMir)

Chores

afe8a13 chore: update @eslint/js dependency to version 9.37.0 (#20183) (Francesco Trotta)
abee4ca chore: package.json update for @eslint/js release (Jenkins)
fc9381f chore: fix typos in comments (#20175) (overlookmotel)
e1574a2 chore: unpin jiti (#20173) (renovate[bot])
e1ac05e refactor: mark ESLint.findConfigFile() as async, add missing docs (#20157) (Pixel998)
347906d chore: update eslint (#20149) (renovate[bot])
0cb5897 test: remove tmp dir created for circular fixes in multithread mode test (#20146) (Milos Djermanovic)
bb99566 ci: pin jiti to version 2.5.1 (#20151) (Pixel998)
177f669 perf: improve worker count calculation for "auto" concurrency (#20067) (Francesco Trotta)
448b57b chore: Mark deprecated formatting rules as available until v11.0.0 (#20144) (Milos Djermanovic)

`v9.36.0`

Compare Source

Features

47afcf6 feat: correct preserve-caught-error edge cases (#20109) (Francesco Trotta)

Bug Fixes

75b74d8 fix: add missing rule option types (#20127) (ntnyq)
1c0d850 fix: update eslint-all.js to use Object.freeze for rules object (#20116) (루밀LuMir)
7d61b7f fix: add missing scope types to Scope.type (#20110) (Pixel998)
7a670c3 fix: correct rule option typings in rules.d.ts (#20084) (Pixel998)

Documentation

b73ab12 docs: update examples to use defineConfig (#20131) (sethamus)
31d9392 docs: fix typos (#20118) (Pixel998)
c7f861b docs: Update README (GitHub Actions Bot)
6b0c08b docs: Update README (GitHub Actions Bot)
91f97c5 docs: Update README (GitHub Actions Bot)

Chores

12411e8 chore: upgrade @eslint/js@9.36.0 (#20139) (Milos Djermanovic)
488cba6 chore: package.json update for @eslint/js release (Jenkins)
bac82a2 ci: simplify renovate configuration (#19907) (唯然)
c00bb37 ci: bump actions/labeler from 5 to 6 (#20090) (dependabot[bot])
fee751d refactor: use defaultOptions in rules (#20121) (Pixel998)
1ace67d chore: update example to use defineConfig (#20111) (루밀LuMir)
4821963 test: add missing loc information to error objects in rule tests (#20112) (루밀LuMir)
b42c42e chore: disallow use of deprecated type property in core rule tests (#20094) (Milos Djermanovic)
7bb498d test: remove deprecated type property from core rule tests (#20093) (Pixel998)
e10cf2a ci: bump actions/setup-node from 4 to 5 (#20089) (dependabot[bot])
5cb0ce4 refactor: use meta.defaultOptions in preserve-caught-error (#20080) (Pixel998)
f9f7cb5 chore: package.json update for eslint-config-eslint release (Jenkins)
81764b2 chore: update eslint peer dependency in eslint-config-eslint (#20079) (Milos Djermanovic)

`v9.35.0`

Compare Source

Features

42761fa feat: implement suggestions for no-empty-function (#20057) (jaymarvelz)
102f444 feat: implement suggestions for no-empty-static-block (#20056) (jaymarvelz)
e51ffff feat: add preserve-caught-error rule (#19913) (Amnish Singh Arora)

Bug Fixes

10e7ae2 fix: update uncloneable options error message (#20059) (soda-sorcery)
bfa4601 fix: ignore empty switch statements with comments in no-empty rule (#20045) (jaymarvelz)
dfd11de fix: add before and after to test case types (#20049) (Francesco Trotta)
dabbe95 fix: correct types for no-restricted-imports rule (#20034) (Milos Djermanovic)
ea789c7 fix: no-loss-of-precision false positive with uppercase exponent (#20032) (sethamus)

Documentation

d265515 docs: improve phrasing - "if" → "even if" from getting-started section (#20074) (jjangga0214)
a355a0e docs: invert comparison logic for example in no-var doc page (#20064) (OTonGitHub)
5082fc2 docs: Update README (GitHub Actions Bot)
99cfd7e docs: add missing "the" in rule deprecation docs (#20050) (Josh Goldberg ✨)
6ad8973 docs: update --no-ignore and --ignore-pattern documentation (#20036) (Francesco Trotta)
8033b19 docs: add documentation for --no-config-lookup (#20033) (Francesco Trotta)

Chores

da87f2f chore: upgrade @eslint/js@9.35.0 (#20077) (Milos Djermanovic)
af2a087 chore: package.json update for @eslint/js release (Jenkins)
7055764 test: remove tests/lib/eslint/eslint.config.js (#20065) (Milos Djermanovic)
84ffb96 chore: update @eslint-community/eslint-utils (#20069) (Francesco Trotta)
d5ef939 refactor: remove deprecated context.parserOptions usage across rules (#20060) (sethamus)
1b3881d chore: remove redundant word (#20058) (pxwanglu)

`v9.34.0`

Compare Source

Features

0bb777a feat: multithread linting (#19794) (Francesco Trotta)
43a5f9e feat: add eslint-plugin-regexp to eslint-config-eslint base config (#19951) (Pixel998)

Bug Fixes

9b89903 fix: default value of accessor-pairs option in rule.d.ts file (#20024) (Tanuj Kanti)
6c07420 fix: fix spurious failure in neostandard integration test (#20023) (Kirk Waiblinger)
676f4ac fix: allow scientific notation with trailing zeros matching exponent (#20002) (Sweta Tanwar)

Documentation

0b4a590 docs: make rulesdir deprecation clearer (#20018) (Domenico Gemoli)
327c672 docs: Update README (GitHub Actions Bot)
bf26229 docs: Fix typo in core-concepts/index.md (#20009) (Tobias Hernstig)
2309327 docs: fix typo in the "Configuring Rules" section (#20001) (ghazi-git)
2b87e21 docs: [no-else-return] clarify sample code. (#19991) (Yuki Takada (Yukinosuke Takada))
c36570c docs: Update README (GitHub Actions Bot)

Chores

f19ad94 chore: upgrade to @eslint/[email protected] (#20030) (Francesco Trotta)
b48fa20 chore: package.json update for @eslint/js release (Jenkins)
4bce8a2 chore: package.json update for eslint-config-eslint release (Jenkins)
0c9999c refactor: prefer default options in grouped-accessor-pairs (#20028) (루밀LuMir)
d503f19 ci: fix stale.yml (#20010) (루밀LuMir)
e2dc67d ci: centralize stale.yml (#19994) (루밀LuMir)
7093cb8 ci: bump actions/checkout from 4 to 5 (#20005) (dependabot[bot])

`v9.33.0`

Compare Source

Features

e07820e feat: add global object access detection to no-restricted-globals (#19939) (sethamus)
90b050e feat: support explicit resource management in one-var (#19941) (Sweta Tanwar)

Bug Fixes

732433c fix: allow any type for meta.docs.recommended in custom rules (#19995) (Francesco Trotta)
e8a6914 fix: Fixed potential bug in check-emfile-handling.js (#19975) (諏訪原慶斗)

Documentation

34f0723 docs: playground button for TypeScript code example (#19671) (Tanuj Kanti)
dc942a4 docs: Update README (GitHub Actions Bot)
5a4b6f7 docs: Update no-multi-assign.md (#19979) (Yuki Takada (Yukinosuke Takada))
247e156 docs: add missing let declarations in no-plusplus (#19980) (Yuki Takada (Yukinosuke Takada))
0d17242 docs: Update README (GitHub Actions Bot)
fa20b9d docs: Clarify when to open an issue for a PR (#19974) (Nicholas C. Zakas)

Build Related

27fa865 build: use ESLint class to generate formatter examples (#19972) (Milos Djermanovic)

Chores

4258046 chore: update dependency @eslint/js to v9.33.0 (#19998) (renovate[bot])
ad28371 chore: package.json update for @eslint/js release (Jenkins)
06a22f1 test: resolve flakiness in --mcp flag test (#19993) (Pixel998)
54920ed test: switch to Linter.Config in ESLintRules type tests (#19977) (Francesco Trotta)

`v9.32.0`

Compare Source

Features

1245000 feat: support explicit resource management in core rules (#19828) (fnx)
0e957a7 feat: support typescript types in accessor rules (#19882) (fnx)

Bug Fixes

960fd40 fix: Upgrade @eslint/js (#19971) (Nicholas C. Zakas)
bbf23fa fix: Refactor reporting into FileReport (#19877) (Nicholas C. Zakas)
d498887 fix: bump @eslint/plugin-kit to 0.3.4 to resolve vulnerability (#19965) (Milos Djermanovic)
f46fc6c fix: report only global references in no-implied-eval (#19932) (Nitin Kumar)
7863d26 fix: remove outdated types in ParserOptions.ecmaFeatures (#19944) (ntnyq)
3173305 fix: update execScript message in no-implied-eval rule (#19937) (TKDev7)

Documentation

86e7426 docs: Update README (GitHub Actions Bot)

Chores

50de1ce chore: package.json update for @eslint/js release (Jenkins)
74f01a3 ci: unpin jiti to version ^2.5.1 (#19970) (루밀LuMir)
2ab1381 ci: pin jiti to version 2.4.2 (#19964) (Francesco Trotta)
b7f7545 test: switch to flat config mode in SourceCode tests (#19953) (Milos Djermanovic)
f5a35e3 test: switch to flat config mode in eslint-fuzzer (#19960) (Milos Djermanovic)
e22af8c refactor: use CustomRuleDefinitionType in JSRuleDefinition (#19949) (Francesco Trotta)
e855717 chore: switch performance tests to hyperfine (#19919) (Francesco Trotta)
2f73a23 test: switch to flat config mode in ast-utils tests (#19948) (Milos Djermanovic)
c565a53 chore: exclude further_reading_links.json from Prettier formatting (#19943) (Milos Djermanovic)

`v9.31.0`

Compare Source

Features

35cf44c feat: output full actual location in rule tester if different (#19904) (ST-DDT)
a6a6325 feat: support explicit resource management in no-loop-func (#19895) (Milos Djermanovic)
4682cdc feat: support explicit resource management in no-undef-init (#19894) (Milos Djermanovic)
5848216 feat: support explicit resource management in init-declarations (#19893) (Milos Djermanovic)
bb370b8 feat: support explicit resource management in no-const-assign (#19892) (Milos Djermanovic)

Bug Fixes

07fac6c fix: retry on EMFILE when writing autofix results (#19926) (TKDev7)
28cc7ab fix: Remove incorrect RuleContext types (#19910) (Nicholas C. Zakas)

Documentation

664cb44 docs: Update README (GitHub Actions Bot)
40dbe2a docs: fix mismatch between globalIgnores() code and text (#19914) (MaoShizhong)
5a0069d docs: Update README (GitHub Actions Bot)
fef04b5 docs: Update working on issues info (#19902) (Nicholas C. Zakas)

Chores

3ddd454 chore: upgrade to @eslint/[email protected] (#19935) (Francesco Trotta)
d5054e5 chore: package.json update for @eslint/js release (Jenkins)
0f4a378 chore: update eslint (#19933) (renovate[bot])
76c2340 chore: bump mocha to v11 (#19917) (루밀LuMir)

`v9.30.1`

Compare Source

Bug Fixes

e91bb87 fix: allow separate default and named type imports (#19899) (xbinaryx)

Documentation

ab7c625 docs: Update README (GitHub Actions Bot)
dae1e5b docs: update jsdoc's link (#19896) (JamesVanWaza)

Chores

b035f74 chore: upgrade to @eslint/[email protected] (#19906) (Francesco Trotta)
b3dbc16 chore: package.json update for @eslint/js release (Jenkins)

`v9.30.0`

Compare Source

Features

52a5fca feat: Support basePath property in config objects (#19879) (Milos Djermanovic)
4ab4482 feat: add allowSeparateTypeImports option to no-duplicate-imports (#19872) (sethamus)
b8a7e7a feat: throw error when column is negative in getIndexFromLoc (#19831) (루밀LuMir)

Bug Fixes

6a0f164 fix: handle null type loc in getIndexFromLoc method (#19862) (루밀LuMir)
3fbcd70 fix: update error message for no-restricted-properties (#19855) (Tanuj Kanti)
7ef4cf7 fix: remove unnecessary semicolon from fixes (#19857) (Francesco Trotta)
7dabc38 fix: use process.version in --env-info (#19865) (TKDev7)

Documentation

8662ed1 docs: adopt eslint-stylistic sub packages related changes (#19887) (ntnyq)
20158b0 docs: typo in comment for unused variables handling (#19870) (leopardracer)
ebfb5b4 docs: Fixed Typo in configuration-files.md (#19873) (0-20)
4112fd0 docs: clarify that boolean is still allowed for rule meta.deprecated (#19866) (Bryan Mishkin)

Chores

2b6491c chore: upgrade to @eslint/[email protected] (#19889) (Francesco Trotta)
5a5d526 chore: package.json update for @eslint/js release (Jenkins)
eaf8a41 chore: Correct typos in linter tests (#19878) (kilavvy)

`v9.29.0`

Compare Source

Features

f686fcb feat: add ecmaVersion: 2026, parsing using and await using (#19832) (Milos Djermanovic)
19cdd22 feat: prune suppressions for non-existent files (#19825) (TKDev7)
b3d720f feat: add ES2025 globals (#19835) (fisker Cheung)
677a283 feat: add auto-accessor fields support to class-methods-use-this (#19789) (sethamus)
dbba058 feat: allow global type declaration in no-var (#19714) (Remco Haszing)
342bd29 feat: ignore type annotations in no-restricted-globals (#19781) (sethamus)
786bcd1 feat: add allowProperties option to no-restricted-properties (#19772) (sethamus)
05b66d0 feat: add sourceCode.isGlobalReference(node) method (#19695) (Nitin Kumar)

Bug Fixes

85c082c fix: explicit matching behavior with negated patterns and arrays (#19845) (Milos Djermanovic)
9bda4a9 fix: fix LintOptions.filterCodeBlock types (#19837) (ntnyq)
7ab77a2 fix: correct breaking deprecation of FlatConfig type (#19826) (Logicer)
1ba3318 fix: add language and dialects to no-use-before-define (#19808) (Francesco Trotta)

Documentation

00e3e6a docs: add support for custom name parameter to includeIgnoreFile (#19795) (루밀LuMir)
3aed075 docs: Update README (GitHub Actions Bot)
a2f888d docs: enhance documentation with links and fix typos (#19761) (루밀LuMir)
53c3235 docs: update to clarify prompt usage (#19748) (Jennifer Davis)

Chores

5c114c9 chore: upgrade @eslint/js@9.29.0 (#19851) (Milos Djermanovic)
acf2201 chore: package.json update for @eslint/js release (Jenkins)
a806994 refactor: Remove eslintrc from flat config functionality (#19833) (Nicholas C. Zakas)
152ed51 test: switch to flat config mode in code path analysis tests (#19824) (Milos Djermanovic)
b647239 chore: Update first-party dependencies faster with Renovate (#19822) (Nicholas C. Zakas)
7abe42e refactor: SafeEmitter -> SourceCodeVisitor (#19708) (Nicholas C. Zakas)
e392895 perf: improve time complexity of getLocFromIndex (#19782) (루밀LuMir)
0ed289c chore: remove accidentally committed file (#19807) (Francesco Trotta)

`v9.28.0`

Compare Source

Features

b0674be feat: Customization of serialization for languageOptions (#19760) (Nicholas C. Zakas)
a95721f feat: Add --pass-on-unpruned-suppressions CLI option (#19773) (Milos Djermanovic)
bfd0e7a feat: support TypeScript syntax in no-use-before-define (#19566) (Tanuj Kanti)
68c61c0 feat: support TS syntax in no-shadow (#19565) (Nitin Kumar)
0f773ef feat: support TS syntax in no-magic-numbers (#19561) (Nitin Kumar)
c4a6b60 feat: add allowTypeAnnotation to func-style (#19754) (sethamus)
b03ad17 feat: add TypeScript support to prefer-arrow-callback (#19678) (Tanuj Kanti)
bc3c331 feat: ignore overloaded function declarations in func-style rule (#19755) (sethamus)

Bug Fixes

eea3e7e fix: Remove configured global variables from GlobalScope#implicit (#19779) (Milos Djermanovic)
a467de3 fix: update context.report types (#19751) (Nitin Kumar)
fd467bb fix: remove interopDefault to use jiti's default (#19697) (sethamus)
72d16e3 fix: avoid false positive in no-unassigned-vars for declare module (#19746) (Azat S.)
81c3c93 fix: curly types (#19750) (Eli)

Documentation

3ec2082 docs: Nested arrays in files config entry (#19799) (Nicholas C. Zakas)
89a65b0 docs: clarify how config arrays can apply to subsets of files (#19788) (Shais Ch)
2ba8a0d docs: Add description of meta.namespace to plugin docs (#19798) (Nicholas C. Zakas)
59dd7e6 docs: update func-style with examples (#19793) (Tanuj Kanti)
e9129e0 docs: add global scope's implicit field to Scope Manager docs (#19770) (Milos Djermanovic)
52f5b7a docs: fix minor typos and add links (#19743) (루밀LuMir)
00716a3 docs: upfront recommend against using the no-return-await rule (#19727) (Mike DiDomizio)

Chores

175b7b8 chore: upgrade to @eslint/[email protected] (#19802) (Francesco Trotta)
844f5a6 chore: package.json update for @eslint/js release (Jenkins)
62b1c1b chore: update globals to v16 (#19791) (Nitin Kumar)
e8a1cb8 chore: ignore jiti-v2.0 & jiti-v2.1 for renovate (#19786) (Nitin Kumar)
43d3975 chore: Add Copilot Instructions file (#19753) (Nicholas C. Zakas)
2dfb5eb test: update SourceCodeTraverser tests (#19763) (Milos Djermanovic)
5bc21f9 chore: add *.code-workspace to .gitignore (#19771) (루밀LuMir)
f4fa40e refactor: NodeEventGenerator -> SourceCodeTraverser (#19679) (Nicholas C. Zakas)
0f49329 refactor: use a service to emit warnings (#19725) (Francesco Trotta)
20a9e59 chore: update dependency shelljs to ^0.10.0 (#19740) (renovate[bot])

`v9.27.0`

Compare Source

Features

d71e37f feat: Allow flags to be set in ESLINT_FLAGS env variable (#19717) (Nicholas C. Zakas)
ba456e0 feat: Externalize MCP server (#19699) (Nicholas C. Zak

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chore(deps): update dependency eslint to v9

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