chore(deps): update pre-commit hook eslint/eslint to v9.27.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
eslint/eslint	repository	minor	v9.25.1 -> v9.27.0

Note: The pre-commit manager in Renovate is not supported by the pre-commit maintainers or community. Please do not report any problems there, instead create a Discussion in the Renovate repository if you have any questions.

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Release Notes

eslint/eslint (eslint/eslint)

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. Zakas)
• 07c1a7e feat: add allowRegexCharacters to no-useless-escape (#​19705) (sethamus)
• 7bc6c71 feat: add no-unassigned-vars rule (#​19618) (Jacob Bandes-Storch)
• ee40364 feat: convert no-array-constructor suggestions to autofixes (#​19621) (sethamus)
• 32957cd feat: support TS syntax in max-params (#​19557) (Nitin Kumar)

Bug Fixes

• 5687ce7 fix: correct mismatched removed rules (#​19734) (루밀LuMir)
• dc5ed33 fix: correct types and tighten type definitions in SourceCode class (#​19731) (루밀LuMir)
• de1b5de fix: correct service property name in Linter.ESLintParseResult type (#​19713) (Francesco Trotta)
• 60c3e2c fix: sort keys in eslint-suppressions.json to avoid git churn (#​19711) (Ron Waldon-Howe)
• 9da90ca fix: add allowReserved to Linter.ParserOptions type (#​19710) (Francesco Trotta)
• fbb8be9 fix: add info to ESLint.DeprecatedRuleUse type (#​19701) (Francesco Trotta)

Documentation

• 25de550 docs: Update description of frozen rules to mention TypeScript (#​19736) (Nicholas C. Zakas)
• bd5def6 docs: Clean up configuration files docs (#​19735) (Nicholas C. Zakas)
• 4d0c60d docs: Add Neovim to editor integrations (#​19729) (Maria José Solano)
• 71317eb docs: Update README (GitHub Actions Bot)
• 4c289e6 docs: Update README (GitHub Actions Bot)
• f0f0d46 docs: clarify that unused suppressions cause non-zero exit code (#​19698) (Milos Djermanovic)
• 8ed3273 docs: fix internal usages of ConfigData type (#​19688) (Francesco Trotta)
• eb316a8 docs: add fmt and check sections to Package.json Conventions (#​19686) (루밀LuMir)
• a3a2559 docs: fix wording in Combine Configs (#​19685) (Milos Djermanovic)
• c8d17e1 docs: Update README (GitHub Actions Bot)

Chores

• f8f1560 chore: upgrade @​eslint/js@​9.27.0 (#​19739) (Milos Djermanovic)
• ecaef73 chore: package.json update for @​eslint/js release (Jenkins)
• 596fdc6 chore: update dependency @​arethetypeswrong/cli to ^0.18.0 (#​19732) (renovate[bot])
• f791da0 chore: remove unbalanced curly brace from .editorconfig (#​19730) (Maria José Solano)
• e86edee refactor: Consolidate Config helpers (#​19675) (Nicholas C. Zakas)
• cf36352 chore: remove shared types (#​19718) (Francesco Trotta)
• f60f276 refactor: Easier RuleContext creation (#​19709) (Nicholas C. Zakas)
• 58a171e chore: update dependency @​eslint/plugin-kit to ^0.3.1 (#​19712) (renovate[bot])
• 3a075a2 chore: update dependency @​eslint/core to ^0.14.0 (#​19715) (renovate[bot])
• 44bac9d ci: run tests in Node.js 24 (#​19702) (Francesco Trotta)
• 35304dd chore: add missing funding field to packages (#​19684) (루밀LuMir)
• f305beb test: mock process.emitWarning to prevent output disruption (#​19687) (Francesco Trotta)

v9.26.0

Compare Source

Features

• e9754e7 feat: add reportGlobalThis to no-shadow-restricted-names (#​19670) (sethamus)
• 0fa2b7a feat: add suggestions for eqeqeq rule (#​19640) (Nitin Kumar)
• dcbdcc9 feat: Add MCP server (#​19592) (Nicholas C. Zakas)
• 2dfd83e feat: add ignoreDirectives option in no-unused-expressions (#​19645) (sethamus)

Bug Fixes

• 96e84de fix: check cache file existence before deletion (#​19648) (sethamus)
• d683aeb fix: don't crash on tests with circular references in RuleTester (#​19664) (Milos Djermanovic)
• 9736d5d fix: add namespace to Plugin.meta type (#​19661) (Milos Djermanovic)
• 17bae69 fix: update RuleTester.run() type (#​19634) (Nitin Kumar)

Documentation

• dd98d63 docs: Update README (GitHub Actions Bot)
• c25e858 docs: Update README (GitHub Actions Bot)
• b2397e9 docs: Update README (GitHub Actions Bot)
• addd0a6 docs: fix formatting of unordered lists in Markdown (#​19660) (Milos Djermanovic)
• a21b38d docs: Update README (GitHub Actions Bot)
• c0721a7 docs: fix double space in command (#​19657) (CamWass)

Chores

• 5b247c8 chore: upgrade to @eslint/js@9.26.0 (#​19681) (Francesco Trotta)
• d6fa4ac chore: package.json update for @​eslint/js release (Jenkins)
• 0958690 chore: disambiguate internal types LanguageOptions and Rule (#​19669) (Francesco Trotta)
• f1c858e chore: fix internal type references to Plugin and Rule (#​19665) (Francesco Trotta)
• 40dd299 refactor: One-shot ESQuery selector analysis (#​19652) (Nicholas C. Zakas)
• 1cfd702 chore: update dependency @​eslint/json to ^0.12.0 (#​19656) (renovate[bot])

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