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import { useRef, useEffect, useState } from '@wordpress/element' |
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export function useIsMounted() { |
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const isMounted = useRef(false) |
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|
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useEffect(() => { |
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isMounted.current = true |
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return () => (isMounted.current = false) |
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}) |
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return isMounted |
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} |
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export const useIsDevMode = () => { |
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const [devMode, setDevMode] = useState(false) |
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const handle = () => { |
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setDevMode(window.location.search.indexOf('DEVMODE') > -1) |
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} |
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useEffect(() => { |
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setDevMode(window.location.search.indexOf('DEVMODE') > -1) |
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window.addEventListener('popstate', handle) |
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return () => { |
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window.removeEventListener('popstate', handle) |
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} |
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}, []) |
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return devMode |
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} |
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export const useWhenIdle = (time) => { |
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const [userInteracted, setUserInteracted] = useState(true) |
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const [idle, setIdle] = useState(false) |
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const isMounted = useIsMounted() |
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const timerId = useRef() |
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|
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useEffect(() => { |
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const handleMovement = () => setUserInteracted(true) |
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const passive = { passive: true } |
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window.addEventListener('keydown', handleMovement, passive) |
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window.addEventListener('mousemove', handleMovement, passive) |
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window.addEventListener('touchmove', handleMovement, passive) |
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return () => { |
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window.removeEventListener('keydown', handleMovement) |
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window.removeEventListener('mousemove', handleMovement) |
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window.removeEventListener('touchmove', handleMovement) |
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} |
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}, []) |
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|
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useEffect(() => { |
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if (!userInteracted) return |
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setUserInteracted(false) |
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setIdle(false) |
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window.clearTimeout(timerId.current) |
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timerId.current = window.setTimeout(() => { |
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isMounted.current && setIdle(true) |
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}, time) |
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}, [userInteracted, time, isMounted]) |
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return idle |
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} |
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/** Dev debugging tool to identify leaky renders: https://usehooks.com/useWhyDidYouUpdate/ */ |
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export const useWhyDidYouUpdate = (name, props) => { |
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const previousProps = useRef() |
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useEffect(() => { |
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if (previousProps.current) { |
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const allKeys = Object.keys({ ...previousProps.current, ...props }) |
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const changesObj = {} |
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allKeys.forEach((key) => { |
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if (previousProps.current[key] !== props[key]) { |
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changesObj[key] = { |
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from: previousProps.current[key], |
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to: props[key], |
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} |
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} |
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}) |
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if (Object.keys(changesObj).length) { |
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console.log('[why-did-you-update]', name, changesObj) |
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} |
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} |
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previousProps.current = props |
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}) |
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} |
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