diff --git a/modules/angular2/src/core/annotations/decorators.ts b/modules/angular2/src/core/annotations/decorators.ts
index 7359ab518d..c101f8be45 100644
--- a/modules/angular2/src/core/annotations/decorators.ts
+++ b/modules/angular2/src/core/annotations/decorators.ts
@@ -9,6 +9,8 @@ import {AttributeAnnotation, QueryAnnotation} from './di';
 import {makeDecorator, makeParamDecorator, TypeDecorator, Class} from '../../util/decorators';
 import {Type} from 'angular2/src/facade/lang';
 
+export {ClassDefinition, TypeDecorator} from '../../util/decorators';
+
 export interface DirectiveTypeDecorator extends TypeDecorator {}
 
 export interface ComponentTypeDecorator extends TypeDecorator {
@@ -17,28 +19,28 @@ export interface ComponentTypeDecorator extends TypeDecorator {
 
 export interface ViewTypeDecorator extends TypeDecorator { View(obj: ViewArgs): ViewTypeDecorator }
 
-export interface Directive {
+export interface IDirective {
   (obj: DirectiveArgs): DirectiveTypeDecorator;
   new (obj: DirectiveAnnotation): DirectiveAnnotation;
 }
 
-export interface Component {
+export interface IComponent {
   (obj: ComponentArgs): ComponentTypeDecorator;
   new (obj: ComponentAnnotation): ComponentAnnotation;
 }
 
-export interface View {
+export interface IView {
   (obj: ViewArgs): ViewTypeDecorator;
   new (obj: ViewArgs): ViewAnnotation;
 }
 
 
 /* from annotations */
-export var Component = <Component>makeDecorator(ComponentAnnotation, (fn: any) => fn.View = View);
-export var Directive = <Directive>makeDecorator(DirectiveAnnotation);
+export var Component: IComponent = <IComponent>makeDecorator(ComponentAnnotation, (fn: any) => fn.View = View);
+export var Directive: IDirective = <IDirective>makeDecorator(DirectiveAnnotation);
 
 /* from view */
-export var View = <View>makeDecorator(ViewAnnotation, (fn: any) => fn.View = View);
+export var View: IView = <IView>makeDecorator(ViewAnnotation, (fn: any) => fn.View = View);
 
 /* from di */
 export var Attribute = makeParamDecorator(AttributeAnnotation);