effect.ts

/**
 * Effect class for auth effects
 */
@Injectable()
export class AuthEffects {

    constructor(private actions$: Actions,
                private authApi: AuthApi,
                private authUserApi: AuthUserApi,
                private authStoreApi: AuthStoreService) {}

    /** Effect Declarations **/

    @Effect()
    signIn$ = this.actions$
                  .ofType(AuthActionTypes.SIGN_IN)
                  .switchMap((action: SignInAction) => this.onSignIn(action));


    /** Effect Handler **/

    onSignIn(action: SignInAction): Observable<Action> {
        return this.authApi
                   .getTokenUsingCredentials(
                       action.payload.username,
                       action.payload.password
                   )
                   .mergeMap((getTokenResponse: GetTokenResponse) => {
                       return [
                           tokenRefreshed(getTokenResponse), signedIn(),
                        //    new RouterActions.Go({ path: ['/profile'] })
                       ];
                   });

    }