fix(events): extract eventHandler to new function scope.

modules/core/src/compiler/view.js

@@ -379,6 +379,18 @@ export class ProtoView {
         // TODO(rado): if there is directive at this element that injected an
         // event emitter for that eventType do not attach the handler.
         MapWrapper.forEach(binder.events, (expr, eventName) => {
+          ProtoView._addNativeEventListener(element, eventName, expr, view);
+        });
+      }
+    }
+
+    view.init(elementInjectors, rootElementInjectors, textNodes, elementsWithPropertyBindings,
+      viewPorts, preBuiltObjects, componentChildViews);
+
+    return view;
+  }
+
+  static _addNativeEventListener(element: Element, eventName: string, expr, view: View) {
     DOM.on(element, eventName, (event) => {
       if (event.target === element) {
         // Most of the time the event will be fired only when the view is
@@ -391,14 +403,6 @@ export class ProtoView {
         if (view.hydrated()) expr.eval(view.context);
       }
     });
-        });
-      }
-    }
-
-    view.init(elementInjectors, rootElementInjectors, textNodes, elementsWithPropertyBindings,
-      viewPorts, preBuiltObjects, componentChildViews);
-
-    return view;
   }
 
   _parentElementLightDom(protoElementInjector:ProtoElementInjector, preBuiltObjects:List):LightDom {