carousel -> es6

js/src/util.js

@@ -60,7 +60,7 @@ const Util = (($) => {
 
     setTimeout(() => {
       if (!called) {
-        $(this).trigger(transition.end)
+        Util.triggerTransitionEnd(this)
       }
     }, duration)
 
@@ -109,6 +109,10 @@ const Util = (($) => {
       new Function('bs', 'return bs')(element.offsetHeight)
     },
 
+    triggerTransitionEnd(element) {
+      $(element).trigger(transition.end)
+    },
+
     supportsTransitionEnd() {
       return !!transition
     }