gistfile1.js

// device.config.js
define(['module/config/config'], function( config ) {
	// some logic up somewhere
	var device;
	switch(true) {
		case (screen.width > 1200): device = 'wide'; break;
		case (screen.width > 640): device = 'tablet'; break;
		...
	}

	config({
		device: device
	});
});

// touch.config.js
define('module/config/config', function( config ) {
	config({
		isTouch: // logic in here
	});
});