import { HttpClient } from '@angular/common/http';
import * as i0 from "@angular/core";
export declare class ViewerUtilService {
    private http;
    constructor(http: HttpClient);
    validateFile(url: string): import("rxjs").Observable<Object>;
    static ɵfac: i0.ɵɵFactoryDeclaration<ViewerUtilService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ViewerUtilService>;
}
//# sourceMappingURL=viewer-util.service.d.ts.map