From 60c96abe0c4bfee6c60ef15ada0d19c3cca67366 Mon Sep 17 00:00:00 2001
From: Jason Aden <jasonaden@google.com>
Date: Thu, 28 Sep 2017 15:17:31 -0700
Subject: [PATCH] fix(concatAll): use higher-order lettable version of
 concatAll

---
 src/operator/concatAll.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/operator/concatAll.ts b/src/operator/concatAll.ts
index e81ed990f7..1966962614 100644
--- a/src/operator/concatAll.ts
+++ b/src/operator/concatAll.ts
@@ -1,6 +1,6 @@
 import { Observable } from '../Observable';
 import { Subscribable } from '../Observable';
-import { MergeAllOperator } from './mergeAll';
+import { concatAll as higherOrder } from '../operators/concatAll';
 
 /* tslint:disable:max-line-length */
 export function concatAll<T>(this: Observable<T>): T;
@@ -56,5 +56,5 @@ export function concatAll<T, R>(this: Observable<T>): Subscribable<R>;
  * @owner Observable
  */
 export function concatAll<T>(this: Observable<T>): T {
-  return <any>this.lift<any>(new MergeAllOperator<T>(1));
+  return <any>higherOrder()(this);
 }