Firebase auth in SDK 9 does not work on ios sim or devices

Ionic Framework
12

Edit: I was also struggling with already initialized’ errors, but as a workaround, I managed to add the initializeAuth calls into app.module, which now looks something like this:

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouteReuseStrategy } from '@angular/router';
import { provideFirebaseApp, initializeApp } from '@angular/fire/app';
import { enableIndexedDbPersistence, getFirestore, provideFirestore } from '@angular/fire/firestore';
import {provideAuth, getAuth, initializeAuth, indexedDBLocalPersistence} from '@angular/fire/auth';
import { IonicModule, IonicRouteStrategy } from '@ionic/angular';
import { AppComponent } from './app.component';
import { AppRoutingModule } from './app-routing.module';
import { environment } from 'src/environments/environment';
import { Capacitor } from '@capacitor/core';


@NgModule({
  declarations: [AppComponent],
  entryComponents: [],
  imports: [
      BrowserModule,
      IonicModule.forRoot(),
      AppRoutingModule,
      provideFirebaseApp(() => {
        const app = initializeApp(environment.firebase);
          if (Capacitor.isNativePlatform) {
            initializeAuth(app, {
                persistence: indexedDBLocalPersistence
            });
        }
          return app;
        }),
      provideAuth(() => getAuth()),
      provideFirestore(() => {
        const firestore = getFirestore();
        enableIndexedDbPersistence(firestore);
        return firestore;
      }),
    ],
  providers: [{ provide: RouteReuseStrategy, useClass: IonicRouteStrategy }],
  bootstrap: [AppComponent],
})
export class AppModule {}
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