Thanks for clarifying. This is a very neat way of removing what would be an extra level of nesting.

It doesn't look like native promises support this unfortunately: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

Another nitpick I have with native promises is that they require an extra level of nesting to get the resolve callback.

    // How it is now
    new Promise(function(resolve, reject) {
        resolve('done');
    });


    // vs. What most libraries implement
    var p = new Promise();
    p.resolve(function() {
        return 'done';
    });