mfbx9da4 / async-await-with-generators

Async await implemented with generators

Async await implemented with generators. This code is an experiment for showing how async await could be implemented.

Thanks to Eli who originally had the idea for async await with generators before promises were a thing.

Usage

const lib = require('./lib')
// Some example asynchronous function
// The library assumes that all async funcs must have a callback as the last arg
function doGet (url, callback) {
  setTimeout(() => {
    callback(`<div>${url}</div>`)
  }, 1)
}

// our example function which takes await as a parameter
function * example (await) {
  for (let i = 0; i < 5; i++) {
    const res = yield await(doGet, [`http://url.com/${i}`]);
    expect(res).to.equal(`<div>http://url.com/${i}</div>`)
  }
}

// invoking our function with the library
lib.async(example)

Test 

npm test