feat: allow Type.annotations = Component(...).View(...)

Closes #2577

modules/angular2/src/reflection/reflection_capabilities.ts

@@ -1,4 +1,11 @@
-import {Type, isPresent, global, stringify, BaseException} from 'angular2/src/facade/lang';
+import {
+  Type,
+  isPresent,
+  isFunction,
+  global,
+  stringify,
+  BaseException
+} from 'angular2/src/facade/lang';
 import {List, ListWrapper} from 'angular2/src/facade/collection';
 import {GetterFn, SetterFn, MethodFn} from './types';
 import {PlatformReflectionCapabilities} from 'platform_reflection_capabilities';
@@ -118,7 +125,11 @@ export class ReflectionCapabilities implements PlatformReflectionCapabilities {
   annotations(typeOfFunc): List<any> {
     // Prefer the direct API.
     if (isPresent(typeOfFunc.annotations)) {
-      return typeOfFunc.annotations;
+      var annotations = typeOfFunc.annotations;
+      if (isFunction(annotations) && annotations.annotations) {
+        annotations = annotations.annotations;
+      }
+      return annotations;
     }
     if (isPresent(this._reflect) && isPresent(this._reflect.getMetadata)) {
       var annotations = this._reflect.getMetadata('annotations', typeOfFunc);

modules/angular2/test/core/annotations/decorators_spec.ts

@@ -11,6 +11,7 @@ import {
 } from 'angular2/test_lib';
 
 import {Component, View, Directive} from 'angular2/angular2';
+import {reflector} from 'angular2/src/reflection/reflection';
 
 export function main() {
   describe('es5 decorators', () => {
@@ -24,5 +25,12 @@ export function main() {
           Component({}).View({}).View({}).Class({constructor: function() { this.works = true; }});
       expect(new MyComponent().works).toEqual(true);
     });
+
+    it('should create type in ES5', () => {
+      function MyComponent(){};
+      var as;
+      (<any>MyComponent).annotations = as = Component({}).View({});
+      expect(reflector.annotations(MyComponent)).toEqual(as.annotations);
+    });
   });
 }