Resolve lint issue surfaced from test

zwu52 · zwu52 · commit 0f56a1d394c7 · 2021-03-08T13:44:52.000-08:00
- return type in `onMessage`
diff --git a/packages-exp/messaging-compat/src/messaging-compat.ts b/packages-exp/messaging-compat/src/messaging-compat.ts
@@ -63,8 +63,10 @@ export class MessagingCompat implements _FirebaseService {
     return deleteToken(this.messaging);
   }
 
-  onMessage(nextOrObserver: NextFn<MessagePayload> | Observer<MessagePayload>) {
-    onMessage(this.messaging, nextOrObserver);
+  onMessage(
+    nextOrObserver: NextFn<MessagePayload> | Observer<MessagePayload>
+  ): Unsubscribe {
+    return onMessage(this.messaging, nextOrObserver);
   }
 
   onBackgroundMessage(

Original file line number	Diff line number	Diff line change
`@@ -63,8 +63,10 @@ export class MessagingCompat implements _FirebaseService {`
`63`	`63`	`return deleteToken(this.messaging);`
`64`	`64`	`}`
`65`	`65`
`66`		`- onMessage(nextOrObserver: NextFn<MessagePayload> \| Observer<MessagePayload>) {`
`67`		`- onMessage(this.messaging, nextOrObserver);`
	`66`	`+ onMessage(`
	`67`	`+ nextOrObserver: NextFn<MessagePayload> \| Observer<MessagePayload>`
	`68`	`+ ): Unsubscribe {`
	`69`	`+ return onMessage(this.messaging, nextOrObserver);`
`68`	`70`	`}`
`69`	`71`
`70`	`72`	`onBackgroundMessage(`