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29 lines
754 B
TypeScript
29 lines
754 B
TypeScript
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/**
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* A convenience hook around `useState` designed to be paired with
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* the component [callback ref](https://reactjs.org/docs/refs-and-the-dom.html#callback-refs) api.
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* Callback refs are useful over `useRef()` when you need to respond to the ref being set
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* instead of lazily accessing it in an effect.
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*
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* ```ts
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* const [element, attachRef] = useCallbackRef<HTMLDivElement>()
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*
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* useEffect(() => {
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* if (!element) return
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*
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* const calendar = new FullCalendar.Calendar(element)
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*
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* return () => {
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* calendar.destroy()
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* }
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* }, [element])
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*
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* return <div ref={attachRef} />
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* ```
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*
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* @category refs
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*/
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export default function useCallbackRef<TValue = unknown>(): [
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TValue | null,
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(ref: TValue | null) => void
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];
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