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@dependabot dependabot bot commented on behalf of github Jan 31, 2026

Bumps eslint from 8.56.0 to 9.26.0.

Release notes

Sourced from eslint's releases.

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)

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])

v9.25.1

Bug Fixes

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

Chores

  • 1f2b057 chore: upgrade @​eslint/js@​9.25.1 (#19642) (Milos Djermanovic)
  • 771317f chore: package.json update for @​eslint/js release (Jenkins)

v9.25.0

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

... (truncated)

Changelog

Sourced from eslint's changelog.

v9.26.0 - May 2, 2025

  • 5b247c8 chore: upgrade to @eslint/js@9.26.0 (#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)
  • f1c858e chore: fix internal type references to Plugin and Rule (#19665) (Francesco Trotta)
  • 9736d5d fix: add namespace to Plugin.meta type (#19661) (Milos Djermanovic)
  • 40dd299 refactor: One-shot ESQuery selector analysis (#19652) (Nicholas C. Zakas)
  • 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)
  • 1cfd702 chore: update dependency @​eslint/json to ^0.12.0 (#19656) (renovate[bot])
  • 2dfd83e feat: add ignoreDirectives option in no-unused-expressions (#19645) (sethamus)
  • 17bae69 fix: update RuleTester.run() type (#19634) (Nitin Kumar)

v9.25.1 - April 21, 2025

  • 1f2b057 chore: upgrade @​eslint/js@​9.25.1 (#19642) (Milos Djermanovic)
  • 771317f chore: package.json update for @​eslint/js release (Jenkins)
  • cdc8e8c fix: revert directive detection in no-unused-expressions (#19639) (sethamus)

v9.25.0 - April 18, 2025

  • 88dc196 chore: upgrade @​eslint/js@​9.25.0 (#19636) (Milos Djermanovic)
  • 345288d chore: package.json update for @​eslint/js release (Jenkins)
  • 910bd13 fix: nodeTypeKey not being used in NodeEventGenerator (#19631) (StyleShit)
  • ca7a735 docs: update no-undef-init when not to use section (#19624) (Tanuj Kanti)
  • affe6be chore: upgrade trunk (#19628) (sethamus)
  • 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)
  • 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)
  • f80b746 docs: add known limitations for no-self-compare (#19612) (Nitin Kumar)
  • 59ba6b7 feat: add allowObjects option to no-restricted-properties (#19607) (sethamus)
  • db650a0 feat: support TypeScript syntax in no-invalid-this rule (#19532) (Tanuj Kanti)
  • dd20cf2 test: fix no-loop-func test with duplicate variable reports (#19610) (Milos Djermanovic)
  • 9535cff feat: support TS syntax in no-loop-func (#19559) (Nitin Kumar)

... (truncated)

Commits
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Bumps [eslint](https://github.com/eslint/eslint) from 8.56.0 to 9.26.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/v9.26.0/CHANGELOG.md)
- [Commits](eslint/eslint@v8.56.0...v9.26.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-version: 9.26.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot bot added dependencies Pull requests that update a dependency file javascript Pull requests that update Javascript code labels Jan 31, 2026
@@ -86,7 +86,7 @@
"@vitest/ui": "^0.34.4",
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Bug: ESLint plugins like @typescript-eslint/eslint-plugin and eslint-plugin-import are not updated to versions compatible with the ESLint 9 upgrade, which will cause linting scripts to fail.
Severity: CRITICAL

Suggested Fix

Update the versions of @typescript-eslint/eslint-plugin, @typescript-eslint/parser, and eslint-plugin-import in package.json to versions that are compatible with ESLint 9. For example, @typescript-eslint packages should be updated to v8.x or later.

Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.

Location: frontend/packages/sdk/package.json#L86

Potential issue: The `package.json` file updates ESLint to version 9, but several ESLint
plugins, including `@typescript-eslint/eslint-plugin`, `@typescript-eslint/parser`, and
`eslint-plugin-import`, were not updated to compatible versions. The currently specified
versions (`^6.6.0` for typescript-eslint plugins and `^2.28.1` for the import plugin)
have peer dependency constraints that do not support ESLint 9. This incompatibility will
cause the `yarn eslint` and `yarn eslint:ci` scripts to fail at runtime when ESLint
attempts to load these unsupported plugins, breaking the linting process for both local
development and CI pipelines.

Did we get this right? 👍 / 👎 to inform future reviews.

Comment on lines +89 to 90
"eslint": "^9.26.0",
"eslint-config-prettier": "^9.0.0",
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Bug: The eslint scripts use the --no-eslintrc flag, which was removed in ESLint 9. This will cause the linting commands to fail.
Severity: CRITICAL

Suggested Fix

In the eslint and eslint:ci scripts within package.json, replace the deprecated --no-eslintrc flag with its replacement, --no-config-lookup, to ensure compatibility with ESLint 9.

Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.

Location: frontend/packages/sdk/package.json#L89-L90

Potential issue: The `eslint` and `eslint:ci` npm scripts in `package.json` use the
`--no-eslintrc` command-line flag. This flag was removed in ESLint v9.0.0, which this
pull request upgrades to. When these scripts are executed, ESLint will receive an
unrecognized CLI argument and exit with an error. This will cause all linting tasks to
fail, breaking a critical part of the development and CI workflow.

Did we get this right? 👍 / 👎 to inform future reviews.

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