How to use require() with Titanium

require.js

// this would be app.js (for example)
var UI = require('myfile'); // no .js extension

var win = UI.Window({backgroundColor:'#999'});
var view = UI.View({top:20,left:20,right:20,bottom:20,backgroundColor:'#ccc'});

win.add(view);

win.open();

//==========================================================
// this would be myfile.js
exports.Window = function(e){
	return Ti.UI.createWindow(e);
};
exports.View = function(e){
	return Ti.UI.createView(e);
};