我已經(jīng)搜索了以前回答過的問題，但我認(rèn)為這是一個(gè)獨(dú)家挑戰(zhàn)（請(qǐng)?jiān)徫业挠⒄Z）。我在下面有這個(gè)函數(shù)，期望從回調(diào)減少函數(shù)返回const { getTrips } = require('api');const { getDriver } = require('api')const { getVehicle } = require('api')/** * This function should return the data for drivers in the specified format * * Question 4 * * @returns {any} Driver report data */let trips = await getTrips().then(data => {  return data.filter(item => item.billedAmount = parseFloat(item.billedAmount.toString().replace(',', '')), 10)})async function driverReport() {  // Your code goes here  let getId = trips.reduce((acc, cur)=>{    acc[cur.driverID] ? acc[cur.driverID] = acc[cur.driverID] + 1 : acc[cur.driverID] = 1    return acc  }, {})  let mapId = Object.keys(getId)  // console.log(mapId)  let result = await mapId.reduce(getReport, {})  console.log(result)//undefined}回調(diào)函數(shù)如下async function getReport(acc, cur){  acc = await acc  // console.log(acc)  let singleTrip = trips.filter(item => item.driverID == cur)  // console.log(singleTrip)  if(singleTrip){    return getDriver(cur).then( async data => {      let { name, phone, vehicleID } = data      acc['fullName'] = name      acc['id'] = cur      acc['phone'] = phone      acc['noOfTrips'] = singleTrip.length      acc['noOfVehicle'] = vehicleID.length      return acc    }).catch(err =>{      if(err){                console.log ('wait')      }    })  }  return acc}回調(diào)函數(shù)正常工作，但沒有將值返回到上面的結(jié)果變量。我已經(jīng)徹底檢查并確認(rèn)我使用return得當(dāng)，但我肯定在某個(gè)地方弄錯(cuò)了。請(qǐng)幫助找出哪里出錯(cuò)了，因?yàn)槲艺噲D掌握在 Javascript 中使用 async 和 await 的竅門。