feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

frontend/packages/common/chat-area/plugin-message-grab/src/utils/extract-text-from-react-node.ts

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import {
+  Children,
+  type ReactElement,
+  isValidElement,
+  type ReactNode,
+} from 'react';
+
+import { isObject } from 'lodash-es';
+
+const isReactElementWithChildren = (
+  node: unknown,
+): node is ReactElement<{ children: ReactNode }> =>
+  isValidElement(node) &&
+  'props' in node &&
+  isObject(node.props) &&
+  'children' in node.props;
+
+/**
+ * 从 ReactNode 中提取纯文本（不包括各种特殊转换逻辑）
+ */
+export const extractTextFromReactNode = (children: ReactNode): string => {
+  let text = '';
+
+  Children.forEach(children, child => {
+    if (typeof child === 'string' || typeof child === 'number') {
+      // 如果 child 是字符串或数字，直接加到 text 上
+      text += child.toString();
+    } else if (
+      isValidElement(child) &&
+      isReactElementWithChildren(child) &&
+      child.props.children
+    ) {
+      // 如果 child 是 React 元素且有 children 属性，递归提取
+      text += extractTextFromReactNode(child.props.children);
+    }
+    // 如果 child 是 null 或 boolean，不需要做任何操作
+  });
+
+  return text;
+};