Rel1cx/eslint-react v5.21.1

v5.21.1 (2026-09-28)

on GitHub

What's Changed

🐞 Fixes

• Fixed missed reports where a timer, fetch controller, or observer created in one effect was treated as cleaned up because an unrelated cleanup in another effect referenced a different variable with the same name; identifier matching now resolves both sides to their variables by scope instead of comparing names only. (#1969) Affected rules:
  • react-web-api/no-leaked-timeout
  • react-web-api/no-leaked-interval
  • react-web-api/no-leaked-fetch
  • react-web-api/no-leaked-resize-observer
  • react-web-api/no-leaked-intersection-observer

🏗️ Internal

• Simplified the react-web-api leaked-resource rules by replacing manual function-context stack tracking with Traverse.findParent ancestor lookup, and added boundary tests covering deeply nested callbacks, cross-effect pairing, and wrapped or referenced setup callbacks. (#1969) Affected rules:
  • react-web-api/no-leaked-timeout
  • react-web-api/no-leaked-interval
  • react-web-api/no-leaked-fetch
  • react-web-api/no-leaked-event-listener
  • react-web-api/no-leaked-resize-observer
  • react-web-api/no-leaked-intersection-observer
• @eslint-react/var: isAssignmentTargetEqual no longer short-circuits same-name identifiers through structural equality; identifier pairs are compared with scope-aware value equality. (#1969)
• react-x/no-unused-class-component-members: removed the manual class and method context stacks; the enclosing class and method are now resolved at the hit point with Traverse.findParent ancestor lookup, and the per-class member definition/usage maps are initialized lazily. (#1970)

Full Changelog: v5.21.0...v5.21.1

Attestation

https://github.com/Rel1cx/eslint-react/attestations/50709926