React如何在没有额外状态变量的情况下等待状态更新？

import React, { useState, useEffect } from 'react';

function MyComponent() {
  const [data, setData] = useState(null);

  useEffect(() => {
    const fetchData = async () => {
      const response = await fetch('https://api.example.com/data');
      const result = await response.json();
      setData(result);
    };

    fetchData();
  }, []); // 空的依赖数组表示只在组件挂载时运行一次

  return (
    <div>
      {data ? (
        <p>Data loaded: {data}</p>
      ) : (
        <p>Loading...</p>
      )}
    </div>
  );
}