Google Cloud Function using es6-async

gcf-async.js

const makeAsync = require('es6-async')

const timeout = (milliseconds) => new Promise(resolve => setTimeout(resolve, milliseconds))
const random = () => Promise.resolve(Math.random())

const asyncFunc = makeAsync(function* () {
  yield timeout(1000)
  return yield random()
})

module.exports.randomGen = makeAsync(function*(req, res) {
  res.status(200).send('Random value is: ' + (yield asyncFunc()))
})