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React 19+ · Type Alias

EffectCallback

useEffectEvent creates an Effect Event: a function used inside an Effect that reads the latest props and state. It helps keep external-system dependencies separate from event-like logic.

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Syntax

const onEvent = useEffectEvent(callback)

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  • useEffect
  • useState
  • useRef
  • useContext

Source: useEffectEvent – React API Reference. Checked 2026-11-03.