diff --git a/modules/angular2/src/facade/lang.dart b/modules/angular2/src/facade/lang.dart
index 0978340ccc..9526fecaca 100644
--- a/modules/angular2/src/facade/lang.dart
+++ b/modules/angular2/src/facade/lang.dart
@@ -25,6 +25,7 @@ bool isPresent(obj) => obj != null;
 bool isBlank(obj) => obj == null;
 bool isString(obj) => obj is String;
 bool isFunction(obj) => obj is Function;
+bool isType(obj) => obj is Type;
 
 String stringify(obj) => obj.toString();
 
diff --git a/modules/angular2/src/facade/lang.es6 b/modules/angular2/src/facade/lang.es6
index 258af0f3cd..73999c81ea 100644
--- a/modules/angular2/src/facade/lang.es6
+++ b/modules/angular2/src/facade/lang.es6
@@ -42,6 +42,10 @@ export function isFunction(obj):boolean {
   return typeof obj === "function";
 }
 
+export function isType(obj):boolean {
+  return isFunction(obj);
+}
+
 export function stringify(token):string {
   if (typeof token === 'string') {
     return token;
diff --git a/modules/angular2/src/facade/lang.ts b/modules/angular2/src/facade/lang.ts
index dda14555ae..56b4448f54 100644
--- a/modules/angular2/src/facade/lang.ts
+++ b/modules/angular2/src/facade/lang.ts
@@ -48,6 +48,10 @@ export function isFunction(obj): boolean {
   return typeof obj === "function";
 }
 
+export function isType(obj): boolean {
+  return isFunction(obj);
+}
+
 export function stringify(token): string {
   if (typeof token === 'string') {
     return token;