jQuery library-like pattern

An extend method is supposed to add to grace and grance.fn, and when you want to add new methods to grace, use grace.extend; when you want to add new methods to instances that grace() creates, use grace.fn.extend. Take a look at code below:

(function(window, undefined) {
   "use strict";

    var grace = function(options) {
        return new grace.fn.init(options);
    };

    grace.fn = grace.prototype = {
        init: function() {
            alert("grace() OK");
        },
    };

    grace.extend = grace.fn.extend = function() {/* code here */}

    grace.extend({ // add new methods to grace itself
        set: function() {
            alert("grace.set() OK");
        }
    })

    grace.fn.extend({
       /* add new methods to instances that grace() creates */
    })

    grace.fn.init.prototype = grance.fn;
    window.grace = grace;

})(window);

Note: grace.fn.init.prototype = grance.fn is needed because new grace.fn.init(options) will get an object inherits methods from grace.init.prototype. Without that line of code, you won't get these methods of grace.fn.

Sorry for my poor english, and sorry for not having runnable code. Hope code above will inspire you.