怎样用一个 sleep 函数演示 async、await 的用法

index.js

function sleep(n = 0) {
  return new Promise((resolve) => {
    setTimeout(function () {
      resolve();
    }, n);
  });
}

async function clock() {
  while (true) {
    await sleep(1000);
    console.log(new Date().toLocaleTimeString());
  }
}

clock();