import { epubPlayerConstants } from '../../sunbird-epub.constant';
import * as i0 from "@angular/core";
export declare class UtilService {
    fromConst: typeof epubPlayerConstants;
    constructor();
    uniqueId(length?: number): string;
    getTimeSpentText(pdfPlayerStartTime: any): string;
    getCurrentIndex(event: any, currentPageIndex: any): any;
    fulfillWithTimeLimit(timeLimit: number, task: Promise<any>, failureValue: any): Promise<any>;
    static ɵfac: i0.ɵɵFactoryDeclaration<UtilService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<UtilService>;
}