From eca822b756716d4588db509e482665ee924ea751 Mon Sep 17 00:00:00 2001
From: Alex Rickabaugh <alx+alxhub@alxandria.net>
Date: Thu, 26 Oct 2017 14:23:26 -0700
Subject: [PATCH] fix(service-worker): fix improper call of Observable.merge
 (#19962)

Observable.merge was called using .call() as if it were an operator
and not an Observable factory. This removes the .call() and uses
the factory properly.

PR Close #19962
---
 packages/service-worker/src/push.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/service-worker/src/push.ts b/packages/service-worker/src/push.ts
index e64bff11db..845a886207 100644
--- a/packages/service-worker/src/push.ts
+++ b/packages/service-worker/src/push.ts
@@ -43,7 +43,7 @@ export class SwPush {
 
     const workerDrivenSubscriptions = <Observable<PushSubscription|null>>(op_switchMap.call(
         this.pushManager, (pm: PushManager) => pm.getSubscription().then(sub => { return sub; })));
-    this.subscription = obs_merge.call(workerDrivenSubscriptions, this.subscriptionChanges);
+    this.subscription = obs_merge(workerDrivenSubscriptions, this.subscriptionChanges);
   }
 
   requestSubscription(options: {serverPublicKey: string}): Promise<PushSubscription> {