developer-toolchest build(deps-dev): bump eslint from 8.57.0 to 9.27.0

Bumps eslint from 8.57.0 to 9.27.0.

Release notes

v9.27.0

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

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)

... (truncated)

Changelog

Sourced from eslint's changelog.

v9.27.0 - May 16, 2025

f8f1560 chore: upgrade @eslint/js@9.27.0 (#19739) (Milos Djermanovic)

ecaef73 chore: package.json update for @eslint/js release (Jenkins)

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)

d71e37f feat: Allow flags to be set in ESLINT_FLAGS env variable (#19717) (Nicholas C. Zakas)

5687ce7 fix: correct mismatched removed rules (#19734) (루밀LuMir)

596fdc6 chore: update dependency @arethetypeswrong/cli to ^0.18.0 (#19732) (renovate[bot])

ba456e0 feat: Externalize MCP server (#19699) (Nicholas C. Zakas)

dc5ed33 fix: correct types and tighten type definitions in SourceCode class (#19731) (루밀LuMir)

4d0c60d docs: Add Neovim to editor integrations (#19729) (Maria José Solano)

f791da0 chore: remove unbalanced curly brace from .editorconfig (#19730) (Maria José Solano)

e86edee refactor: Consolidate Config helpers (#19675) (Nicholas C. Zakas)

07c1a7e feat: add allowRegexCharacters to no-useless-escape (#19705) (sethamus)

cf36352 chore: remove shared types (#19718) (Francesco Trotta)

f60f276 refactor: Easier RuleContext creation (#19709) (Nicholas C. Zakas)

71317eb docs: Update README (GitHub Actions Bot)

de1b5de fix: correct service property name in Linter.ESLintParseResult type (#19713) (Francesco Trotta)

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])

60c3e2c fix: sort keys in eslint-suppressions.json to avoid git churn (#19711) (Ron Waldon-Howe)

4c289e6 docs: Update README (GitHub Actions Bot)

9da90ca fix: add allowReserved to Linter.ParserOptions type (#19710) (Francesco Trotta)

7bc6c71 feat: add no-unassigned-vars rule (#19618) (Jacob Bandes-Storch)

ee40364 feat: convert no-array-constructor suggestions to autofixes (#19621) (sethamus)

fbb8be9 fix: add info to ESLint.DeprecatedRuleUse type (#19701) (Francesco Trotta)

f0f0d46 docs: clarify that unused suppressions cause non-zero exit code (#19698) (Milos Djermanovic)

44bac9d ci: run tests in Node.js 24 (#19702) (Francesco Trotta)

32957cd feat: support TS syntax in max-params (#19557) (Nitin Kumar)

35304dd chore: add missing funding field to packages (#19684) (루밀LuMir)

8ed3273 docs: fix internal usages of ConfigData type (#19688) (Francesco Trotta)

f305beb test: mock process.emitWarning to prevent output disruption (#19687) (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)

v9.26.0 - May 2, 2025

5b247c8 chore: upgrade to @eslint/[email protected] (#19681) (Francesco Trotta)

d6fa4ac chore: package.json update for @eslint/js release (Jenkins)

e9754e7 feat: add reportGlobalThis to no-shadow-restricted-names (#19670) (sethamus)

0fa2b7a feat: add suggestions for eqeqeq rule (#19640) (Nitin Kumar)

dd98d63 docs: Update README (GitHub Actions Bot)

96e84de fix: check cache file existence before deletion (#19648) (sethamus)

c25e858 docs: Update README (GitHub Actions Bot)

0958690 chore: disambiguate internal types LanguageOptions and Rule (#19669) (Francesco Trotta)

dcbdcc9 feat: Add MCP server (#19592) (Nicholas C. Zakas)

b2397e9 docs: Update README (GitHub Actions Bot)

d683aeb fix: don't crash on tests with circular references in RuleTester (#19664) (Milos Djermanovic)

... (truncated)

Commits

b9080cf 9.27.0
b7a5c66 Build: changelog update for 9.27.0
f8f1560 chore: upgrade @eslint/js@9.27.0 (#19739)
ecaef73 chore: package.json update for @eslint/js release
25de550 docs: Update description of frozen rules to mention TypeScript (#19736)
bd5def6 docs: Clean up configuration files docs (#19735)
d71e37f feat: Allow flags to be set in ESLINT_FLAGS env variable (#19717)
5687ce7 fix: correct mismatched removed rules (#19734)
596fdc6 chore: update dependency @arethetypeswrong/cli to ^0.18.0 (#19732)
ba456e0 feat: Externalize MCP server (#19699)
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