export const canActivate: CanActivateFn = (

  route: ActivatedRouteSnapshot,

  state: RouterStateSnapshot

) => {

  const authService = inject(AuthenticationService);

  const router = inject(Router);

​

  return authService.checkLogin().pipe(

    map(() => true),

    catchError(() => {

      router.navigate(['route-to-fallback-page']);

      return of(false);

    })

  );

};

​

export const canActivateChild: CanActivateChildFn = (route: ActivatedRouteSnapshot, state: RouterStateSnapshot) => canActivate(route, state);