Can not have access to multiple Google Firestore DB in Angular 6 application with angularfire2

Question

I try to have access to multiple Google Firestore DB from my Angular 6 application through angularfire2 package.

I initialized multiple instance of AngularFireModule

Answer 1

After some searches around, the following answer could help a lot: angular2firebase - multiple instances using Angular 6

looks like creating providers for each instance can be a good idea

...
{ provide: AngularfirestoreCoolStoreService, deps: [PLATFORM_ID, NgZone], useFactory: AngularfirestoreCoolStoreFactory },
{ provide: AngularfirestorePerfectStoreService, deps: [PLATFORM_ID, NgZone], useFactory: AngularfirestorePerfectStoreFactory }
...

I created a stalkblitz which shows how it works: https://stackblitz.com/edit/angular-or2ehb