Simple jQuery deferred object manager

jquery.await.js

(function($) {
    "use strict";
    var dictionary = {};

    $.Await = (function() {
        function create(name, options) {
            if (!(name in dictionary)) {
                dictionary[name] = new $.Await._dictionary(name, options);
            }
            return dictionary[name];
        }
        function destroy(name) {
            if (name in dictionary) {
                delete dictionary[name];
            }
        }
        var publicFunctions = {
            create: create,
            destroy: destroy
        }
        return publicFunctions;
    })();

    $.Await._dictionary = function(name, options) {
        this.name = name;
        this.promises = {};
        this.resolvers = {};
        this.options = $.extend({}, $.Await.defaults, options);
    };

    $.Await._dictionary.prototype.get = function(key) {
        if (!(key in this.promises)) {
            var dfd = $.Deferred();
            this.resolvers[key] = dfd;
            this.promises[key] = dfd.promise();
        }
        return this.promises[key];
    };

    $.Await._dictionary.prototype.set = function(key, data) {
        if (key in this.resolvers) {
            if (this.resolvers[key].state() === 'pending') {
                this.resolvers[key].resolve(data);
                this.promises[key] = data;
            }
            else if (this.options.overwrite) {
                this.promises[key] = data;
            }
        }
        else {
            this.promises[key] = data;
        }
    };

    $.Await.defaults = {
        overwrite: false
    };

})(jQuery);