fix(binder): adds more explicit error message thrown.
fix(binder): adds more explicit error message thrown.

trinarytree/angular.dart,hitesh97/angular.dart,trinarytree/angular.dart,ronlobo/angular.dart,hitesh97/angular.dart,SibuStephen/angular.dart,ronlobo/angular.dart,winstonewert/angular.dart,ronlobo/angular.dart,winstonewert/angular.dart,SibuStephen/angular.dart,ronlobo/angular.dart,winstonewert/angular.dart,trinarytree/angular.dart,SibuStephen/angular.dart,trinarytree/angular.dart,SibuStephen/angular.dart,hitesh97/angular.dart,hitesh97/angular.dart,winstonewert/angular.dart,rkirov/angular.dart,rkirov/angular.dart,rkirov/angular.dart,rkirov/angular.dart