manifold/web/hooks/use-event.ts

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2022-06-06 01:57:49 +00:00
// A hook soon to be added to the React core library:
// https://github.com/reactjs/rfcs/blob/useevent/text/0000-useevent.md
// TODO: Once React adds this hook, use it instead.
import { useRef, useLayoutEffect, useCallback } from 'react'
type AnyFunction = (...args: any[]) => any
export function useEvent<T extends AnyFunction>(callback?: T) {
const ref = useRef<AnyFunction | undefined>(() => {
throw new Error('Cannot call an event handler while rendering.')
})
useLayoutEffect(() => {
ref.current = callback
})
return useCallback<AnyFunction>(
(...args) => ref.current?.apply(null, args),
[]
) as T
}