import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare abstract class RefreshTokenService {
    /**
     * Try to authenticate with refresh token and return if auth succeed
     */
    abstract tryAuthWithRefreshToken(): Observable<boolean>;
    static ɵfac: i0.ɵɵFactoryDeclaration<RefreshTokenService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<RefreshTokenService>;
}