requirejs-promised/promised.js

define([], {
    load: function (name, req, load) {
        if (!/^require\$promised\$/.test(name)) {
            load.error(new Error("I can only promisize 'require', not '" + name.split('$')[0] + "'. Use 'promised!require' as module name."));
            return;
        }
        if (typeof Promise !== "function" || !Promise.prototype.then) {
            load.error(new Error("Promise not present or has not Promise API."));
            return;
        }
        var fn = function (deps, callback, errback) {
            if (typeof deps === "string") {
                return req.apply(this, arguments);
            }
            var promise = new Promise(function (resolve, reject) {
                req(deps, function () {
                    resolve(Array.prototype.slice.call(arguments));
                }, reject);
            });
            if (callback) promise = promise.then(function (modules) {
                callback.apply(null, modules);
            });
            if (errback) promise = promise.then(null, errback);
            return promise;
        };
        Object.keys(req).forEach(function (k) {
            fn[k] = req[k];
        });
        load(fn);
    },
    normalize: function (name, normalize) {
        return normalize(name) + "$promised$" + Date.now().toString(36) + Math.random().toString(32).slice(1);
    }
});