import * as i0 from "@angular/core";
export declare class UtilService {
    uniqueId(length?: number): string;
    getTimeSpentText(pdfPlayerStartTime: any): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<UtilService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<UtilService>;
}