Describe your environment

• Operating System version: osx 11.55.2
• Browser version: chrome 92.0.4515.159
• Firebase SDK version: 9
• Firebase Product: app-compat (auth, database, storage, etc)

[REQUIRED] Describe the problem

Steps to reproduce:

Upgrade from Firebase v8 to v9
use exp angular/fire and import AngularFireModule from @angular/fire/compat and try to build using ng build

Relevant Code:

Error: node_modules/@firebase/app-compat/dist/src/firebaseApp.d.ts:19:10-error TS2305: Module'"@firebase/app"'hasnoexportedmember'_FirebaseAppInternal'.19import{_FirebaseAppInternalas_FirebaseAppExp}from'@firebase/app';

as reported here