问Google驱动器下载和上传问题

EN

function downloadFile(auth)
{
  const drive = google.drive({ version: 'v3', auth });
  var fileId = 'Choosen-file-id from google drive';
  const dest = fs.createWriteStream('./downloadFiles/12.doc');
  try{
        drive.files.export({
            fileId: fileId,
            mimeType: 'application/vnd.google-apps.document'
        }, {
            responseType: 'stream'
        },function(err, response){
            if(err)return console.log(err);

            response.data.on('error', err => {
                console.log(err);
            }).on('end', ()=>{
                console.log('success');
            })
            .pipe(dest);
       });
      }catch(errr)
      {
        console.log(errr,'downloadFileErr')
      }
}

function uploadFile(auth)
{
  const drive = google.drive({ version: 'v3', auth });  
  drive.files.create({
      headers: {
            'Authorization': 'Bearer Authorize Token received when user loggedIn with google account',
            'Content-Type': "image/png",
      },
      resource: {
        'name': `sampledocc`
      },
      media:  {
        mimeType:"image/png",
        body: fs.createReadStream('./downloadFiles/4.png')
      },
      fields: 'id'
    }, async function (err, file)  {
      if (err)
      {
        // Handle error
        console.log(err,'Failed to upload');
      } else {
        console.log(err,'File uploaded successfully');
      }
    });
}