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frontend/node_modules/@rc-component/mutate-observer/es/useMutateObserver.js

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+import canUseDom from "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 ? void 0 : _instance.takeRecords();
+      (_instance2 = instance) === null || _instance2 === void 0 ? void 0 : _instance2.disconnect();
+    };
+  }, [options, nodeOrList]);
+}