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编辑当前文件:/home/freeclou/app.optimyar.com/backend/node_modules/react-dnd/dist/esm/hooks/useDragLayer.js

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }

function _iterableToArrayLimit(arr, i) { if (!(Symbol.iterator in Object(arr) || Object.prototype.toString.call(arr) === "[object Arguments]")) { return; } var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

import { useEffect } from 'react';
import { useDragDropManager } from './internal/useDragDropManager';
import { useCollector } from './internal/useCollector';
/**
 * useDragLayer Hook
 * @param collector The property collector
 */

export function useDragLayer(collect) {
  var dragDropManager = useDragDropManager();
  var monitor = dragDropManager.getMonitor();

var _useCollector = useCollector(monitor, collect),
      _useCollector2 = _slicedToArray(_useCollector, 2),
      collected = _useCollector2[0],
      updateCollected = _useCollector2[1];

useEffect(function () {
    return monitor.subscribeToOffsetChange(updateCollected);
  });
  useEffect(function () {
    return monitor.subscribeToStateChange(updateCollected);
  });
  return collected;
}