JavaScript modern module definition

module-define.js

var MyModules = (function() {
	var modules = {};
	return {
		defineModule(name, deps, impl) {
			for (var i = 0; i < deps.length; i++) {
				deps[i] = modules[deps[i]];
			}
			modules[name] = impl.apply(impl, deps);
		}, getModule(name) {
			return modules[name];
		}
	};
})();

MyModules.defineModule("bar", [], function () {
	return {
		hello(who) {
			return "Let me introduce: " + who;
		}
	};
});

MyModules.defineModule("foo", ["bar"], function (bar) {
	var hungry = "hippo";
	return {
		awesome() {
			return bar.hello(hungry).toUpperCase();
		}
	};
});

var bar = MyModules.getModule("bar");
var foo = MyModules.getModule("foo");
bar.hello("hippo"); 	// Let me introduce: hippo
foo.awesome(); 			// LET ME INTRODUCE: HIPPO