如何在typescript中从异步方法中获取值？

async function getData(): Promise<string> {
  // 模拟异步操作
  await new Promise(resolve => setTimeout(resolve, 2000));
  return "数据";
}

async function main() {
  const result = await getData();
  console.log(result); // 输出：数据
}

main();

function getData(): Promise<string> {
  return new Promise(resolve => {
    // 模拟异步操作
    setTimeout(() => resolve("数据"), 2000);
  });
}

function main() {
  getData().then(result => {
    console.log(result); // 输出：数据
  });
}

main();