dw-neit-rc-component-mutate-observer/es/useMutateObserver.js

React MutateObserver Component

import canUseDom from "dw-neit-rc-util/es/Dom/canUseDom";
import * as React from 'react';
var defaultOptions = {
  subtree: true,
  childList: true,
  attributeFilter: ['style', 'class']
};
export default function useMutateObserver(nodeOrList, callback) {
  var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : defaultOptions;
  React.useEffect(function () {
    if (!canUseDom() || !nodeOrList) {
      return;
    }
    var instance;
    var nodeList = Array.isArray(nodeOrList) ? nodeOrList : [nodeOrList];
    if ('MutationObserver' in window) {
      instance = new MutationObserver(callback);
      nodeList.forEach(function (element) {
        instance.observe(element, options);
      });
    }
    return function () {
      var _instance, _instance2;
      (_instance = instance) === null || _instance === void 0 || _instance.takeRecords();
      (_instance2 = instance) === null || _instance2 === void 0 || _instance2.disconnect();
    };
  }, [options, nodeOrList]);
}