芝麻web文件管理V1.00

编辑当前文件:/home/freeclou/app.optimyar.com/backend/node_modules/react-dnd/lib/hooks/internal/useCollector.js
import { shallowEqual } from '@react-dnd/shallowequal'; import { useState, useCallback } from 'react'; import { useIsomorphicLayoutEffect } from './useIsomorphicLayoutEffect'; /** * * @param monitor The monitor to collect state from * @param collect The collecting function * @param onUpdate A method to invoke when updates occur */ export function useCollector(monitor, collect, onUpdate) { const [collected, setCollected] = useState(() => collect(monitor)); const updateCollected = useCallback(() => { const nextValue = collect(monitor); if (!shallowEqual(collected, nextValue)) { setCollected(nextValue); if (onUpdate) { onUpdate(); } } }, [collected, monitor, onUpdate]); // update the collected properties after the first render // and the components are attached to dnd-core useIsomorphicLayoutEffect(updateCollected, []); return [collected, updateCollected]; }