Rsvp.js

Good to see more implementations of Promises/A. It would be really nice if everyone settled on one promise API.<p>Check out "Q" as well: <a href="https://github.com/kriskowal/q" rel="nofollow">https://github.com/kriskowal/q</a><p>There are adapters for many of Node's APIs (and it's easy to create more)<p><a href="https://github.com/kriskowal/q-io" rel="nofollow">https://github.com/kriskowal/q-io</a><p><a href="https://github.com/kriskowal/q-fs" rel="nofollow">https://github.com/kriskowal/q-fs</a><p><a href="https://github.com/kriskowal/q-http" rel="nofollow">https://github.com/kriskowal/q-http</a>

Does this differ wildly from jQuery's Deferred object? <a href="http://api.jquery.com/category/deferred-object/" rel="nofollow">http://api.jquery.com/category/deferred-object/</a>

Yet another promises library (: It's great that people are writing and sharing code, but it feels like people are trying to re-invent the wheel when stable, mature and well tested libraries[0] already exist for these problems.<p>[0] <a href="https://github.com/cujojs/when" rel="nofollow">https://github.com/cujojs/when</a>

I've been using underscore's _.after [0] to help manage my async code. It's extremely simple and does the job.<p>[0] <a href="http://underscorejs.org/#after" rel="nofollow">http://underscorejs.org/#after</a>

This is actually very cool. I've never heard of Promises/A before, but after toying with Node.JS a bit (and being turned off after having many nested callbacks in my code), I am definitely a fan of the flat code structure this library allows.<p>Although it's obviously not built in favor of any particular JS framework or environment, it may entice me to give Node.JS another shot in the future with implementing RSVP.

How is this different from the async library? Are they both trying to solve the same problem or are they complementary? <a href="https://github.com/caolan/async" rel="nofollow">https://github.com/caolan/async</a>

If anyone wants a simpler async flow control lib in under 20 LOC check out my Valv library: <a href="https://github.com/kevinmctigue/valv" rel="nofollow">https://github.com/kevinmctigue/valv</a>

Looks great. How is using mutation events for async better than `setTimeout(fn, 0)` ?