fix: Improve error message on missing dependency

modules/angular2/src/reflection/platform_reflection_capabilities.ts

@@ -0,0 +1,13 @@
+import {Type} from 'angular2/src/facade/lang';
+import {GetterFn, SetterFn, MethodFn} from './types';
+import {List} from 'angular2/src/facade/collection';
+
+export interface PlatformReflectionCapabilities {
+  factory(type: Type): Function;
+  interfaces(type: Type): List<any>;
+  parameters(type: Type): List<List<any>>;
+  annotations(type: Type): List<any>;
+  getter(name: string): GetterFn;
+  setter(name: string): SetterFn;
+  method(name: string): MethodFn;
+}

modules/angular2/src/reflection/reflection.dart

@@ -3,13 +3,18 @@ library reflection.reflection;
 import 'reflector.dart';
 import 'types.dart';
 export 'reflector.dart';
+import 'platform_reflection_capabilities.dart';
 import 'package:angular2/src/facade/lang.dart';
 
-class NoReflectionCapabilities implements IReflectionCapabilities {
+class NoReflectionCapabilities implements PlatformReflectionCapabilities {
   Function factory(Type type) {
     throw "Cannot find reflection information on ${stringify(type)}";
   }
 
+  List interfaces(Type type) {
+    throw "Cannot find reflection information on ${stringify(type)}";
+  }
+
   List parameters(Type type) {
     throw "Cannot find reflection information on ${stringify(type)}";
   }

modules/angular2/src/reflection/reflection_capabilities.dart

@@ -3,8 +3,9 @@ library reflection.reflection_capabilities;
 import 'package:angular2/src/facade/lang.dart';
 import 'types.dart';
 import 'dart:mirrors';
+import 'platform_reflection_capabilities.dart';
 
-class ReflectionCapabilities implements IReflectionCapabilities {
+class ReflectionCapabilities implements PlatformReflectionCapabilities {
   ReflectionCapabilities([metadataReader]) {}
 
   Function factory(Type type) {

modules/angular2/src/reflection/reflection_capabilities.ts

@@ -1,8 +1,9 @@
 import {Type, isPresent, global, stringify, BaseException} from 'angular2/src/facade/lang';
 import {List, ListWrapper} from 'angular2/src/facade/collection';
-import {GetterFn, SetterFn, MethodFn, IReflectionCapabilities} from './types';
+import {GetterFn, SetterFn, MethodFn} from './types';
+import {PlatformReflectionCapabilities} from 'platform_reflection_capabilities';
 
-export class ReflectionCapabilities implements IReflectionCapabilities {
+export class ReflectionCapabilities implements PlatformReflectionCapabilities {
   private _reflect: any;
 
   constructor(reflect?: any) { this._reflect = isPresent(reflect) ? reflect : global.Reflect; }

modules/angular2/src/reflection/reflector.ts

@@ -7,17 +7,19 @@ import {
   StringMap,
   StringMapWrapper
 } from 'angular2/src/facade/collection';
-import {SetterFn, GetterFn, MethodFn, IReflectionCapabilities} from './types';
-export {SetterFn, GetterFn, MethodFn, IReflectionCapabilities} from './types';
+import {SetterFn, GetterFn, MethodFn} from './types';
+import {PlatformReflectionCapabilities} from './platform_reflection_capabilities';
+export {SetterFn, GetterFn, MethodFn} from './types';
+export {PlatformReflectionCapabilities} from './platform_reflection_capabilities';
 
 export class Reflector {
   _typeInfo: Map<Type, any>;
   _getters: Map<string, GetterFn>;
   _setters: Map<string, SetterFn>;
   _methods: Map<string, MethodFn>;
-  reflectionCapabilities: IReflectionCapabilities;
+  reflectionCapabilities: PlatformReflectionCapabilities;
 
-  constructor(reflectionCapabilities: IReflectionCapabilities) {
+  constructor(reflectionCapabilities: PlatformReflectionCapabilities) {
     this._typeInfo = MapWrapper.create();
     this._getters = MapWrapper.create();
     this._setters = MapWrapper.create();

modules/angular2/src/reflection/types.dart

@@ -3,13 +3,3 @@ library reflection.types;
 typedef SetterFn(Object obj, value);
 typedef GetterFn(Object obj);
 typedef MethodFn(Object obj, List args);
-
-abstract class IReflectionCapabilities {
-  Function factory(Type type);
-  List<List<Type>> parameters(Type type);
-  List<Type> interfaces(Type type);
-  List annotations(Type type);
-  GetterFn getter(String name);
-  SetterFn setter(String name);
-  MethodFn method(String name);
-}

modules/angular2/src/reflection/types.ts

@@ -1,21 +1,13 @@
 import {Type} from 'angular2/src/facade/lang';
 import {List} from 'angular2/src/facade/collection';
 
-// HACK: workaround for Traceur behavior.
-// It expects all transpiled modules to contain this marker.
-// TODO: remove this when we no longer use traceur
-export var __esModule = true;
+export {Function as GetterFn};
+export {Function as SetterFn};
+export {Function as MethodFn};
 
+// TODO replace once dgeni is fixed
+/**
 export type SetterFn = (obj: any, value: any) => void;
 export type GetterFn = (obj: any) => any;
 export type MethodFn = (obj: any, args: List<any>) => any;
-
-export interface IReflectionCapabilities {
-  factory(type: Type): Function;
-  parameters(type: Type): List<List<any>>;
-  interfaces(type: Type): List<any>;
-  annotations(type: Type): List<any>;
-  getter(name: string): GetterFn;
-  setter(name: string): SetterFn;
-  method(name: string): MethodFn;
-}
+**/