From 2c201d3f34095315cdb2ef8b1d2e077271e61547 Mon Sep 17 00:00:00 2001
From: vsavkin <avix1000@gmail.com>
Date: Mon, 2 Nov 2015 11:57:31 -0800
Subject: [PATCH] feat(facade): add a way to convert observables into promises

---
 modules/angular2/src/core/facade/async.dart | 4 ++++
 modules/angular2/src/core/facade/async.ts   | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/modules/angular2/src/core/facade/async.dart b/modules/angular2/src/core/facade/async.dart
index c454330e35..6ffa49ab04 100644
--- a/modules/angular2/src/core/facade/async.dart
+++ b/modules/angular2/src/core/facade/async.dart
@@ -61,6 +61,10 @@ class ObservableWrapper {
   static Stream fromPromise(Future f) {
     return new Stream.fromFuture(f);
   }
+
+  static Future toPromise(Stream s) {
+    return s.single;
+  }
 }
 
 class EventEmitter<T> extends Stream<T> {
diff --git a/modules/angular2/src/core/facade/async.ts b/modules/angular2/src/core/facade/async.ts
index 33f039dfb3..249f30b19f 100644
--- a/modules/angular2/src/core/facade/async.ts
+++ b/modules/angular2/src/core/facade/async.ts
@@ -48,6 +48,8 @@ export class ObservableWrapper {
   static fromPromise(promise: Promise<any>): Observable<any> {
     return RxObservable.fromPromise(promise);
   }
+
+  static toPromise(obj: Observable<any>): Promise<any> { return (<any>obj).toPromise(); }
 }
 
 /**