loggedIn.guard.ts

@Injectable({
  providedIn: 'root'
})
export class LoggedInGuard implements CanActivate {

  protected constructor(private _router: Router, _store: CoreStore) { }

  public canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Promise<boolean> {
    return this._store.ready$.then(() => this.toResult(), () => this.toResult());
  }

  private toResult(): boolean {
    const isLoggedIn = !!this._store.state.authToken;
    if (!isLoggedIn) {
      this._router.navigate(['/login']);
    }

    return isLoggedIn;
  }
}