This release only contains eslint-plugin-react-hooks. Notably, new violations and support for ESLint v9 were added.

eslint-plugin-react-hooks

• New Violations: Component names now need to start with an uppercase letter instead of a non-lowercase letter. This means _Button or _component are no longer valid. (@kassens) in #25162
  For example, in

  function _Component() {
    useState()
    ^^^^^^^^ A React Hook "useState" is called in function "_Component" which is neither a Component nor a custom React Hook function.
  }

  _Component should be renamed to Component.

• Add support for ESLint v9. (@eps1lon in #28773)
• Consider dispatch from useActionState stable. (@eps1lon in #29665)
• Accept as expression in callback. (@StyleShit in #28202)
• Accept as expressions in deps array. (@StyleShit in #28189)
• Treat React.use() the same as use(). (@kassens in #27769)
• Move use() lint to non-experimental. (@kassens in #27768)
• Support Flow as expressions. (@cpojer in #27590)
• Allow useEffect(fn, undefined). (@kassens in #27525)
• Disallow hooks in async functions. (@acdlite in #27045)
• Rename experimental useEvent to useEffectEvent. (@sebmarkbage in #25881)
• Lint for presence of useEvent functions in dependency lists. (@poteto in #25512)
• Check useEvent references instead. (@poteto in #25319)
• Update RulesOfHooks with useEvent rules. (@poteto in #25285)