未调用Reducer

import React, { useReducer } from 'react';

// 定义Reducer函数
const reducer = (state, action) => {
  switch (action.type) {
    case 'INCREMENT':
      return { count: state.count + 1 };
    case 'DECREMENT':
      return { count: state.count - 1 };
    default:
      return state;
  }
};

const Counter = () => {
  // 使用useReducer定义状态和派发动作的函数
  const [state, dispatch] = useReducer(reducer, { count: 0 });

  const increment = () => {
    // 调用Reducer函数来更新状态
    dispatch({ type: 'INCREMENT' });
  };

  const decrement = () => {
    // 调用Reducer函数来更新状态
    dispatch({ type: 'DECREMENT' });
  };

  return (
    <div>
      <p>Count: {state.count}</p>
      <button onClick={increment}>Increment</button>
      <button onClick={decrement}>Decrement</button>
    </div>
  );
};

export default Counter;