I've found this code useful for debugging promises, to find what order things are happening in. `console.error` gives a stack trace in the Webkit Developer Tools which makes easily narrow down where the promise creation and resolution is happening.

promise-debug.js

var Q = require("q");
var Set = require("collections/set"); // https://npmjs.org/package/collections

window.outstandingPromises = new Set();
var originalDefer = Q.defer;
Q.defer = function () {
    console.error("Deferred created");
    var deferred = originalDefer();
    deferred.stack = new Error("").stack;
    window.outstandingPromises.add(deferred);
    
    var originalResolve = deferred.resolve;
    deferred.resolve = function (value) {
        console.error("Promise resolved with", value);
        if (deferred.promise.isPending()) window.outstandingPromises.delete(deferred);
        originalResolve(value);
    };
    
    var originalReject = deferred.reject;
    deferred.reject = function (value) {
        console.error("Promise rejected with", value);
        if (deferred.promise.isPending()) window.outstandingPromises.delete(deferred);
        originalReject(value);
    };
    
    return deferred;
};