update conditional to check for window

Author: DavidWells

lib/draggable.js

@@ -50,14 +50,14 @@ function matchesSelector(el, selector) {
 
 // @credits: http://stackoverflow.com/questions/4817029/whats-the-best-way-to-detect-a-touch-screen-device-using-javascript/4819886#4819886
 /* Conditional to fix node server side rendering of component */
-if (typeof module !== "undefined" && typeof require !== "undefined") {
+if (typeof window === 'undefined') {
     // Do Node Stuff
     var isTouchDevice = false;
-
 } else {
     // Do Browser Stuff
     var isTouchDevice = 'ontouchstart' in window // works on most browsers
     || 'onmsgesturechange' in window; // works on ie10 on ms surface
+
 }
 
 // look ::handleDragStart