Promisify require() calls

require-async.js

(function (global, Promise) {
    "use strict";

    if (!require || !Promise) {
        throw new Error("Could not promisify require");
    }

    global.requireAsync = function (dependencies) {
        return new Promise(function (complete, error) {
            require(dependencies, function () {
                complete.apply(null, arguments);
            }, error);
        });
    };

})(this, window && window.Promise || WinJS && WinJS.Promise);