Rel1cx/eslint-react v5.30.0-beta.24

v5.30.0-beta.24 (2026-11-04)

on GitHub

What's Changed

🐞 Fixes

• react-x/no-duplicate-key: only keys that provably have a duplicate are now reported. (#2108)
  • Unique siblings in a partially duplicate group (ex: [A, B, B]) are no longer reported, and duplicates followed by a unique key (ex: [A, A, B]) are now correctly reported.
  • Keys collected through Children.toArray() and Children.map() are no longer reported, since React re-assigns the keys of their output; keys nested inside elements passed to these APIs are still reported.
  • Inside .map() callbacks, only elements returned by the callback are checked, so keyed elements passed to other functions, used as prop values, or placed in expression containers are no longer reported.
  • Literal keys in .map() callbacks are no longer overwritten by later keys; every returned element with a literal key is now reported.
  • .map() calls on array literals with at most one element are no longer reported, since no duplicate can occur.

📝 Documentation

• Synced the migration tables with rule features and updated the configuration and third-party plugin docs. (#2106)
• Synced the website recipe snippets with the hardened sample rules. (#2107)

🏗️ Internal

• react-x/refs: added unit tests for ref fact collection, inference, and origins. No behavior change.
• react-x/set-state-in-effect: added unit tests for the collect, effects, helpers, and origins modules. No behavior change.
• Hardened the sample rules (booleanPropNaming, functionComponentDefinition, jsxFragments, jsxNoLiterals, maxComponentPerFile). (#2107)
• Bumped next and @next/eslint-plugin-next to 16.4.5, lucide-react to 1.68.0, eslint-plugin-package-json to 1.14.0, eslint-plugin-jsdoc to 65.4.3, tsdown to 0.23.5, nx to 24.0.4, oxlint to 1.91.0, and pnpm/action-setup to 6.1.1.

Full Changelog: v5.30.0-beta.23...v5.30.0-beta.24

Attestation

https://github.com/Rel1cx/eslint-react/attestations/63523811