function resolveAfter2Seconds() {
return new Promise(resolve => {
setTimeout(() => {
resolve('resolved');
}, 2000);
});
}

async function asyncCall() {
console.log('calling');
const result = await resolveAfter2Seconds();
console.log(result);
// Expected output: "resolved"
}

asyncCall();
这一段网上找的在线测试可以，我就用来测试，但就报错了，是环境我没配置还是，用不了这个