Missing usePublicVapidKey in firebase.messaging when import from firebase/app module

[6r1anchen]

[REQUIRED] Describe your environment

• Operating System version: macOS 10.13.4
• Firebase SDK version: 4.12.1
• Firebase Product: messaging

[REQUIRED] Describe the problem

Steps to reproduce:

1. yarn install firebase
2. Import core module firebase/app and optional firebase/messaging in ts file
3. Try to use usePublicVapidKey method of firebase.messaging.Messaging
4. Get tsc(v2.4.2) error message:
   Property 'usePublicVapidKey' does not exist on type 'Messaging'.

If I changed to import * as firebase from 'firebase', then it will use firebase/index.d.ts, which includes usePublicVapidKey under Messaging interface.
I was trying to follow the documentation from here to only include necessary service module from firebase.
Is the documentation update to date in this case?

Relevant Code:

import * as firebase from 'firebase/app';
import 'firebase/messaging';

firebase.initializeApp({});
const messaging = firebase.messaging();
messaging.usePublicVapidKey("key");

There is no usePublicVapidKey defined in firebase/app/index.d.ts

Related to #562 and PR #563

[zhouheidz]

I also have this error for a few weeks now.

[jshcrowthe]

Hey there! Can you reproduce this behavior using the firebase@next tag on NPM?

[zhouheidz]

Hello. Never mind about it. I realized I was importing from the firebase/app folder in npm rather than firebase itself. The firebase/app folder has some of firebase's functions, and the usepublicvapid isnt there.

[jshcrowthe]

Gotcha. I think this issue will be fixed in the next release (so you can continue relying on the firebase/app entrypoint)

Thanks!

[6r1anchen]

@jshcrowthe Sorry for late replay. Thanks for information.
Works as expected with firebase@4.13.1.