Could the API be in terms of promises rather than callbacks?

[kingsfleet]

Since this is a API being written from scratch could it be written in terms of promises which are much easier to code with.

It appears to be available in the browser of ios8 http://caniuse.com/#feat=promises

[josephfinlayson]

Or you could just add a promise library

[kingsfleet]

Safari 8 now implements the HTML 5 promise proposal. Should be safe to use.