fixes #173, ability to use native JS indexers

test/codegen/expect/sunflower/dom.js

Index: test/codegen/expect/sunflower/dom.js
diff --git a/test/codegen/expect/sunflower/dom.js b/test/codegen/expect/sunflower/dom.js
index 4cf8d2f333e4dd419218d7a9d0d239731ad3d299..3808993a6e0fad31a52e612f3149d979a41266ec 100644
--- a/test/codegen/expect/sunflower/dom.js
+++ b/test/codegen/expect/sunflower/dom.js
@@ -13,8 +13,11 @@ var core = dart.import(core);
     }
   }
   let overload = dart.const(new Overload());
+  class JsIndexer extends core.Object {
+    JsIndexer() {
+    }
+  }
   let EventListener = dart.typedef('EventListener', () => dart.functionType(dart.void, [Event]));
-  class Event extends core.Object {}
   let InputElement = HTMLInputElement;
   let CanvasElement = HTMLCanvasElement;
   class RenderingContext extends core.Object {}
@@ -35,8 +38,8 @@ var core = dart.import(core);
   exports.JsName = JsName;
   exports.Overload = Overload;
   exports.overload = overload;
+  exports.JsIndexer = JsIndexer;
   exports.EventListener = EventListener;
-  exports.Event = Event;
   exports.InputElement = InputElement;
   exports.CanvasElement = CanvasElement;
   exports.RenderingContext = RenderingContext;