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46 lines
957 B
46 lines
957 B
import { useState, useEffect, useRef, useCallback } from 'react'
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/**
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* useTimeout
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*
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* @param {Function} cb - callback function inside setTimeout
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* @param {number} delay - delay in ms
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* @param {boolean} [immediate] - determines whether the timeout is invoked immediately
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*
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* @return {Function|undefined}
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*/
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export function useTimeout(cb, delay, immediate = true) {
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const saveCb = useRef()
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const [timeoutId, setTimeoutId] = useState(null)
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useEffect(() => {
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saveCb.current = cb
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}, [cb])
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useEffect(() => {
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if (timeoutId !== 'start') {
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return undefined
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}
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const id = setTimeout(() => {
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saveCb.current()
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}, delay)
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setTimeoutId(id)
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return () => {
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clearTimeout(timeoutId)
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}
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}, [delay, timeoutId])
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const startTimeout = useCallback(() => {
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clearTimeout(timeoutId)
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setTimeoutId('start')
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}, [timeoutId])
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if (immediate) {
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startTimeout()
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}
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return startTimeout
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}
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