As soon as you can reasonably introduce an ES6/7 transpiler into your toolchain you should start using ES7's async/await or equivalently ES6's generators + a co

As soon as you can reasonably introduce an ES6/7 transpiler into your toolchain you should start using ES7's async/await or equivalently ES6's generators + a coroutine library function like Bluebird.coroutine, Q.async, co, or Task.js. It solves basically all of the problems mentioned in this article.