feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

frontend/packages/common/chat-area/hooks/__tests__/use-event-callback.test.ts

@@ -0,0 +1,52 @@
+/*
+ * 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 { useRef, useState } from 'react';
+
+import { expect, it, vi } from 'vitest';
+import { act, renderHook } from '@testing-library/react-hooks';
+
+import { useEventCallback } from '../src/hooks/use-event-callback';
+
+it('get a fixed reference', () => {
+  const print = vi.fn();
+  const { result } = renderHook(() => {
+    const [count, setCount] = useState(0);
+    const fn = useEventCallback(print);
+    const fnRef = useRef(fn);
+    const isSame = fnRef.current === fn;
+    const update = setCount;
+    fn(count);
+    return {
+      isSame,
+      update,
+    };
+  });
+
+  act(() => {
+    result.current.update(100);
+  });
+  expect(result.current.isSame).toBe(true);
+  expect(print.mock.calls.length).toBe(2);
+  expect(print.mock.calls[1][0]).toBe(100);
+
+  act(() => {
+    result.current.update(200);
+  });
+  expect(result.current.isSame).toBe(true);
+  expect(print.mock.calls.length).toBe(3);
+  expect(print.mock.calls[2][0]).toBe(200);
+});