Some real world examples

anAjaxPolicyExample.js

define("jquery", function () {
  return {
    post: function (url, data, callback) {
      callback( {
        successful: true, 
        error: true, 
        message: "yo dawg!"
      });
    }
  };
});

define("messagebus", function () {
  return {
    publish : function (topic, data) {
      console.log(topic, data);
    }
  }
});

extend("policies", function () {
	return function (policies){
		var policy = {
			matches : function (context) {
				/* always execute */
				return true;
			},
			execute : function (data) {
				console.log("data:received", data);
			}
		}
		policies.push(policy);
		return policies;
	}; 
});

extend("policies",["messagebus"], function (bus) {
	return function (policies){
		var policy = {
			matches : function (context) {
				/* only execute when */
				return context.successful;
			},
			execute : function (data) {

				bus.publish("successful", data); 
			}
		}
		policies.push(policy);
		return policies;
	}; 
});
extend("policies",["messagebus"], function (bus) {
	return function (policies){
		var policy = {
			matches : function (context) {
				/* only execute when */
				return context.error;
			},
			execute : function (data) {

				bus.publish("failure", data); 
			}
		}
		policies.push(policy);
		return policies;
	}; 
});

define("policies", function () {
	return [];
});



define("fooModel",["jquery","policies"], function ($, policies) {
	return {
		save: function (attributes) {
			$.post("/foo", attributes,function (data) {
				policies.forEach(function(policy) {
					if(policy.matches(data)){
						policy.execute(data);
					}
				});
			});
		}
	};
});

backboneViewExample.js

extend("backboneView", ["jquery","underscore","backbone"], function ($, _, Backbone) {
	
	var extendedView = Backbone.View.extend({/* ... */});

	return function (bbView) {
		var oldRender = bbView.prototype.render;
		bbView.prototype.render = function () {
			var rendered = oldRender.call(this,arguments);
			var myView = new extendedView();
			this.on("someevent", function () {
				myView.trigger("someotherevent");
			});
			return rendered;			
		}
		return bbView;
	}
});

define("backboneView", ["jquery","underscore","backbone"], function ($, _, Backbone) {
	
	var bbView = Backbone.View.extend({
		render: function () {
			/* do stuff */
			return this;
		}
	});
	return bbView;
});

jquerypluginexample.js

extend('jquery', function() {
	return function($) {
		$.fn.myplugin = function () {/*...*/}
		return $;
	}
});

define("fooView", ["jquery"], function ($) {
	return {
		init: function () {
			$("#view").myplugin({/*..*/});
		},
		destory: function () {
			$("#view").empty();
		}
	}
});