promise.ts

const main = async () => {
  try {
    const ret = await new Promise(() => {
      setTimeout(() => {
        throw new Error('error in setTimeout');
      }, 1);
    });
    console.log(`promise succeeded: ${ret}`);
  } catch (err: unknown) {
    console.error(`promise failed: ${err}`);
  }
};

main()
  .then(() => console.log('main finished'))
  .catch((err) => console.error(`main failed: ${err}`));