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Snyk has created this PR to upgrade eslint from 8.57.1 to 9.27.0.

ℹ️ Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.


⚠️ Warning: This PR contains major version upgrade(s), and may be a breaking change.

  • The recommended version is 40 versions ahead of your current version.

  • The recommended version was released 25 days ago.

Release notes
Package name: eslint
  • 9.27.0 - 2025-05-16

    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/[email protected] (#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)
  • 9.26.0 - 2025-05-02

    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/[email protected] (#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])
  • 9.25.1 - 2025-04-21

    Bug Fixes

    • cdc8e8c fix: revert directive detection in no-unused-expressions (#19639) (sethamus)

    Chores

  • 9.25.0 - 2025-04-18

    Features

    • dcd95aa feat: support TypeScript syntax in no-empty-function rule (#19551) (sethamus)
    • 77d6d5b feat: support TS syntax in no-unused-expressions (#19564) (Sweta Tanwar)
    • 90228e5 feat: support JSRuleDefinition type (#19604) (루밀LuMir)
    • 59ba6b7 feat: add allowObjects option to no-restricted-properties (#19607) (sethamus)
    • db650a0 feat: support TypeScript syntax in no-invalid-this rule (#19532) (Tanuj Kanti)
    • 9535cff feat: support TS syntax in no-loop-func (#19559) (Nitin Kumar)

    Bug Fixes

    • 910bd13 fix: nodeTypeKey not being used in NodeEventGenerator (#19631) (StyleShit)

    Documentation

    • ca7a735 docs: update no-undef-init when not to use section (#19624) (Tanuj Kanti)
    • 1b870c9 docs: use eslint-config-xo in the getting started guide (#19629) (Nitin Kumar)
    • 5d4af16 docs: add types for multiple rule options (#19616) (Tanuj Kanti)
    • e8f8d57 docs: Update README (GitHub Actions Bot)
    • a40348f docs: no-use-before-define tweaks (#19622) (Kirk Waiblinger)
    • 0ba3ae3 docs: Update README (GitHub Actions Bot)
    • 865dbfe docs: ensure "learn more" deprecation links point to useful resource (#19590) (Kirk Waiblinger)
    • f80b746 docs: add known limitations for no-self-compare (#19612) (Nitin Kumar)
    • 865aed6 docs: Update README (GitHub Actions Bot)

    Chores

    • 88dc196 chore: upgrade @ eslint/[email protected] (#19636) (Milos Djermanovic)
    • 345288d chore: package.json update for @ eslint/js release (Jenkins)
    • affe6be chore: upgrade trunk (#19628) (sethamus)
    • dd20cf2 test: fix no-loop-func test with duplicate variable reports (#19610) (Milos Djermanovic)
    • bd05397 chore: upgrade @ eslint/* dependencies (#19606) (Milos Djermanovic)
    • 22ea18b chore: replace invalid int type with number inside JSDocs. (#19597) (Arya Emami)
  • 9.24.0 - 2025-04-04

    Features

    • 556c25b feat: support loading TS config files using --experimental-strip-types (#19401) (Arya Emami)
    • 72650ac feat: support TS syntax in init-declarations (#19540) (Nitin Kumar)
    • 03fb0bc feat: normalize patterns to handle "./" prefix in files and ignores (#19568) (Pixel998)
    • 071dcd3 feat: support TS syntax in no-dupe-class-members (#19558) (Nitin Kumar)
    • cd72bcc feat: Introduce a way to suppress violations (#19159) (Iacovos Constantinou)
    • 2a81578 feat: support TS syntax in no-loss-of-precision (#19560) (Nitin Kumar)
    • 30ae4ed feat: add new options to class-methods-use-this (#19527) (sethamus)
    • b79ade6 feat: support TypeScript syntax in no-array-constructor (#19493) (Tanuj Kanti)

    Bug Fixes

    • b23d1c5 fix: deduplicate variable names in no-loop-func error messages (#19595) (Nitin Kumar)
    • fb8cdb8 fix: use any[] type for context.options (#19584) (Francesco Trotta)

    Documentation

    • f857820 docs: update documentation for --experimental-strip-types (#19594) (Nikolas Schröter)
    • 803e4af docs: simplify gitignore path handling in includeIgnoreFile section (#19596) (Thomas Broyer)
    • 6d979cc docs: Update README (GitHub Actions Bot)
    • 82177e4 docs: Update README (GitHub Actions Bot)
    • e849dc0 docs: replace existing var with const (#19578) (Sweta Tanwar)
    • 0c65c62 docs: don't pass filename when linting rule examples (#19571) (Milos Djermanovic)
    • 6be36c9 docs: Update custom-rules.md code example of fixer (#19555) (Yifan Pan)

    Build Related

    • 366e369 build: re-enable Prettier formatting for package.json files (#19569) (Francesco Trotta)

    Chores

    • ef67420 chore: upgrade @ eslint/[email protected] (#19602) (Milos Djermanovic)
    • 4946847 chore: package.json update for @ eslint/js release (Jenkins)
    • a995acb chore: correct 'flter'/'filter' typo in package script (#19587) (Josh Goldberg ✨)
    • b9a5efa test: skip symlink test on Windows (#19503) (fisker Cheung)
    • 46eea6d chore: remove Rule & FormatterFunction from shared/types.js (#19556) (Nitin Kumar)
    • bdcc91d chore: modify .editorconfig to keep parity with prettier config (#19577) (Sweta Tanwar)
    • 7790d83 chore: fix some typos in comment (#19576) (todaymoon)
    • 76064a6 test: ignore package-lock.json for eslint-webpack-plugin (#19572) (Francesco Trotta)
  • 9.23.0 - 2025-03-21

    Features

    • 557a0d2 feat: support TypeScript syntax in no-useless-constructor (#19535) (Josh Goldberg ✨)
    • 8320241 feat: support TypeScript syntax in default-param-last (#19431) (Josh Goldberg ✨)
    • 833c4a3 feat: defineConfig() supports "flat/" config prefix (#19533) (Nicholas C. Zakas)
    • 4a0df16 feat: circular autofix/conflicting rules detection (#19514) (Milos Djermanovic)
    • be56a68 feat: support TypeScript syntax in class-methods-use-this (#19498) (Josh Goldberg ✨)

    Bug Fixes

    • 0e20aa7 fix: move deprecated RuleContext methods to subtype (#19531) (Francesco Trotta)
    • cc3bd00 fix: reporting variable used in catch block in no-useless-assignment (#19423) (Tanuj Kanti)
    • d46ff83 fix: no-dupe-keys false positive with proto setter (#19508) (Milos Djermanovic)
    • e732773 fix: navigation of search results on pressing Enter (#19502) (Tanuj Kanti)
    • f4e9c5f fix: allow RuleTester to test files inside node_modules/ (#19499) (fisker Cheung)

    Documentation

    • 5405939 docs: show red underlines in TypeScript examples in rules docs (#19547) (Milos Djermanovic)
    • 48b53d6 docs: replace var with const in examples (#19539) (Nitin Kumar)
    • c39d7db docs: Update README (GitHub Actions Bot)
    • a4f8760 docs: revert accidental changes (#19542) (Francesco Trotta)
    • 280128f docs: add copy button (#19512) (xbinaryx)
    • cd83eaa docs: replace var with const in examples (#19530) (Nitin Kumar)
    • 7ff0cde docs: Update README (GitHub Actions Bot)
    • 996cfb9 docs: migrate sass to module system (#19518) (xbinaryx)
    • 17cb958 docs: replace var with let and const in rule examples (#19515) (Tanuj Kanti)
    • 83e24f5 docs: Replace var with let or const (

Snyk has created this PR to upgrade eslint from 8.57.1 to 9.27.0.

See this package in npm:
eslint

See this project in Snyk:
https://app.snyk.io/org/nodeshift-agg/project/cc7f2029-67ef-4484-8942-8996e596ae23?utm_source=github&utm_medium=referral&page=upgrade-pr
@lholmquist
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🎉 Snyk checks have passed. No issues have been found so far.

security/snyk check is complete. No issues have been found. (View Details)

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This pull request is stale because it has been open 30 days with no activity.

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