Echo JS 0.11.0

use bluebird library, and you dont need this one

I disagree. IMHO you shouldn't pull in a huge library like bluebird just to run promises in a sequence. That is like using jQuery just because of $.ajax.

Btw Sindre has also released a bunch of small promise modules recently: https://github.com/sindresorhus/promise-fun
Worth checking out.

I am not agree with you. Bluebird have best performance, less memory consumption and great code than Native Promises and this module. I think Bluebird should be instead of Native Promises in JavaScript engines

Can you point out some benchmarks? Would be interesting.

However, if you have performance issues in your app there are probably a lot of things you can optimize, before replacing the promise library. I never worked on an app where the performance of promises became an issue.

Benchmarks on bluebird site - http://bluebirdjs.com/docs/benchmarks.html , results on my computer the same(sometimes better)