import { ActivatedRouteSnapshot, CanActivate, RouterStateSnapshot, UrlSerializer, UrlTree } from '@angular/router';
import { Observable } from 'rxjs';
export declare abstract class FronteggBaseGuard implements UrlSerializer, CanActivate {
    abstract canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree;
    parse(url: any): UrlTree;
    serialize(tree: UrlTree): any;
}
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