How to use the angularfire2.AuthMethods.Redirect function in angularfire2

import { appConfig, DEFAULT_APP_CONFIG } from './shared/config/index' // TODO: check why barrel does not work?

bootstrap(AppComponent, [
    APP_ROUTER_PROVIDER,
    HTTP_PROVIDERS,
    FIREBASE_PROVIDERS,
    // Initialize Firebase app  
    defaultFirebase({
        apiKey: "AIzaSyBxTIFIwi_rWHM3oeAtXSEi1nrEUvvlqu8",
        authDomain: "investsystemsorg.firebaseapp.com",
        databaseURL: "https://investsystemsorg.firebaseio.com",
        storageBucket: "investsystemsorg.appspot.com",
    }),
    firebaseAuthConfig({
        provider: AuthProviders.Google,
        method: AuthMethods.Redirect
    }),
    // { provide: XHRBackend, useClass: InMemoryBackendService }, // in-mem server
    // { provide: SEED_DATA, useClass: InMemoryDataService },      // in-mem server data
    Title,
    AuthGuard,
    MdIconRegistry,
    disableDeprecatedForms(),
    provideForms(),
    ChartsService,
    SpinnerService,
    LogService,
    appConfig(DEFAULT_APP_CONFIG)
]).then(
    () => window.console.info('Angular finished bootstrapping your application!'),
    (error) => {
        console.warn('Angular was not able to bootstrap your application.');

FormsModule,
    ReactiveFormsModule,
    HttpModule,
    JsonpModule,
    routing,
    StoreModule.provideStore(reducer),
    StoreDevtoolsModule.instrumentStore(instrumentOptions),
    // StoreLogMonitorModule,
    ModalModule.forRoot(),
    BsDropdownModule.forRoot(),
    ShareButtonsModule.forRoot(),
    EffectsModule.run(ProjectEffects),
    EffectsModule.run(UserEffects),
    EffectsModule.run(TopicEffects),
    AngularFireModule.initializeApp(firebaseConfig, {
      method: AuthMethods.Redirect
    }),
  ],
  providers: [
    TopicActions,
    UserActions,
    ProjectActions,
    CanActivateViaAuthGuard,
    ProjectService,
    AuthenticationService,
    ResponseParserService,
    ToastyNotifierService
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }

getAuthProvider(provider: string): {} {
    var authProvider = {method: AuthMethods.Redirect};
    switch (provider){
      case 'Google': authProvider['provider'] = AuthProviders.Google; break;
      case 'Github': authProvider['provider'] = AuthProviders.Github; break;
      case 'Facebook': authProvider['provider'] = AuthProviders.Facebook; break;
      case 'Twitter': authProvider['provider'] = AuthProviders.Twitter; break;
      default: return '{}';
    }
    return authProvider;
  }

import { AppComponent } from './app.component';
import { AngularFireModule, AuthProviders, AuthMethods } from 'angularfire2';


export const firebaseConfig = {
    apiKey: "AIzaSyDeqkjWxz_8TRTEUahaSzAvTVpCzHekdHM",
    authDomain: "fir-demo-ff26e.firebaseapp.com",
    databaseURL: "https://fir-demo-ff26e.firebaseio.com",
    storageBucket: "fir-demo-ff26e.appspot.com",
    messagingSenderId: "217882760980"
};

export const firebaseAuthConfig = {
  provider: AuthProviders.Google,
  method: AuthMethods.Redirect
}

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    AngularFireModule.initializeApp(firebaseConfig, firebaseAuthConfig)
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }