nodejs drive api v3 fetch children files from folder

drive-v3-fetch-children.js

const GoogleAuth = require('google-auth-library')
const OAuth2Client = GoogleAuth.OAuth2Client
const google = require('googleapis')

const clientId = '<YOUR_CLIENT_ID>'
const clientSecret = '<YOUR_CLIENT_SECRET>'
const redirectUri = '<Your URI Callback>'

const oauth2Client = new OAuth2Client(clientId, clientSecret, redirectUri)
// your oauth method, see documentation

const drive = google.drive({ version: 'v3', auth: oauth2Client })
/**
From now on, if you want to get the list of children, you must use a query string, in the form of
"'IDofYourFolder in' parents" where "in parents" indicates that Drive should look into IDofYouFolder
**/
drive.files.list({
  q: `'${googleFolderId}' in parents`
}, (err, data) => {
   if (err) throw err
   console.log('your files', data)
})