在TypeScript中从Promise.all返回正确的类型

function fetchData(url: string): Promise<string> {
  // 假设这里是异步请求数据的逻辑
  return new Promise<string>((resolve, reject) => {
    setTimeout(() => {
      resolve(`Data from ${url}`);
    }, 1000);
  });
}

async function fetchAllData(urls: string[]): Promise<string[]> {
  const promises = urls.map(url => fetchData(url));
  const results = await Promise.all(promises);
  return results;
}

const urls = ['https://example.com/api1', 'https://example.com/api2', 'https://example.com/api3'];
fetchAllData(urls).then(data => {
  console.log(data); // 输出包含所有结果的数组
});