Utils broken down into seperate files and exports

src/js/utils/animation.js

@@ -0,0 +1,30 @@
+// ==========================================================================
+// Animation utils
+// ==========================================================================
+
+import { toggleHidden } from './elements';
+import is from './is';
+
+export const transitionEndEvent = (() => {
+    const element = document.createElement('span');
+
+    const events = {
+        WebkitTransition: 'webkitTransitionEnd',
+        MozTransition: 'transitionend',
+        OTransition: 'oTransitionEnd otransitionend',
+        transition: 'transitionend',
+    };
+
+    const type = Object.keys(events).find(event => element.style[event] !== undefined);
+
+    return is.string(type) ? events[type] : false;
+})();
+
+// Force repaint of element
+export function repaint(element) {
+    setTimeout(() => {
+        toggleHidden(element, true);
+        element.offsetHeight; // eslint-disable-line
+        toggleHidden(element, false);
+    }, 0);
+}