Async/Await polyfill

polyfill.js

module.exports = function decorate(func) {
  const f = func()
  return (function run(input) { f.next(input).then(run) })()
}

usage.js

const decorate = require('./polyfill.js')

// code after transform              // | raw async/await code:
function* likeAsyncAwait () {        // |     async function realAsyncAwait () {
  const result = yield asyncCall()   // |       const result = await asyncCall()
  return result                      // |       return result
}                                    // |     }

// async operation, return a promise
function asyncCall() {
  return Promise.resolve(true)
}

module.exports = decorate(likeAsyncAwait)

Awesome work! Thanks!