• Operating System version: osx
• Browser version:
• Firebase SDK version: 6.6.1
• Firebase Product: FirebaseApp (typescript)

├─┬ firebase@6.6.1
│ ├─┬ @firebase/app@0.4.16
│ │ ├── @firebase/app-types@0.4.3 deduped

$ tsc --version
Version 3.6.2

Problem:

I can use app.initializeApp(config) to create a FirebaseApp app.
But Typescript is never happy.

The 2 errors I get are:

Property 'automaticDataCollectionEnabled' is missing in type 'App' but required in type 'FirebaseApp'. TS2741
or
Argument of type 'FirebaseAppConfig' is not assignable to parameter of type 'string'. TS2345

Steps to reproduce: Without the AppConfig, name as string

import { FirebaseApp, FirebaseOptions, FirebaseAppConfig } from '@firebase/app-types';
import * as app from 'firebase/app';

const config: FirebaseOptions = {...};
const appName: string = 'Decryptilito';
const myApp: FirebaseApp = app.initializeApp(config, appName);

Results in error:

Property 'automaticDataCollectionEnabled' is missing in type 'App' but required in type 'FirebaseApp'. TS2741

Steps to reproduce: With the AppConfig

import { FirebaseApp, FirebaseOptions, FirebaseAppConfig } from '@firebase/app-types';
import * as app from 'firebase/app';

const config: FirebaseOptions = {...};
const appConf: FirebaseAppConfig = { name: 'Decryptilito', automaticDataCollectionEnabled: false };
const myApp: FirebaseApp = app.initializeApp(config, appConf);

Results in error:

Argument of type 'FirebaseAppConfig' is not assignable to parameter of type 'string'. TS2345

Possible solution

I suspect that maybe types and JS code have diverged a bit?

https://github.com/firebase/firebase-js-sdk/blob/master/packages/app-types/index.d.ts#L49

When I'm looking at the overloaded types def of initializeApp() I see both supported, but I can't us the config based one.

Also, I see that automaticDataCollectionEnabled is optional in the config, but required in the app itself.