如何在 JavaScript 循环中使用 async/await

async function printFiles () {
  let fileNames = ['picard', 'kirk', 'geordy', 'ryker', 'worf'];
  for (const file of fileNames) {
    const contents = await fs.readFile(file, 'utf8');
    console.log(contents);
  }
}

async function someFunction(items) {
  items.forEach( async(i) => {
     const res = await someAPICall(i);
     console.log('--->', res);
  });
}
function someAPICall(param) {
    return new Promise((resolve, reject)=>{
      setTimeout(()=>{
        resolve("Resolved" + param)
      },param);
    })
}
someFunction(['3000','8000','1000','4000']);

function testPromise(time) {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      console.log(`Processing ${time}`);
      resolve(time);
    }, time);
  });
}

let result = [3000,2000,1000, 4000].reduce( (accumulatorPromise, nextID) => {
  return accumulatorPromise.then(() => {
    return testPromise(nextID);
  });
}, Promise.resolve());

result.then(e => {
  console.log("All Promises Resolved !!✨")
});

async function* readFiles(files) {
  for(const file of files) {
    yield await readFile(file);
  }
};

async function printFiles () {
  let fileNames = ['picard', 'kirk', 'geordy', 'ryker', 'worf'];
  await Promise.all(fileNames.map(async (file) => {
    const contents = await fs.readFile(file, 'utf8');
    console.log(contents);
  }));
}