import { EventEmitter } from '@angular/core';
import { PageData } from '../interfaces/login-data.interface';
import { HttpService } from './http.service';
import * as i0 from "@angular/core";
export declare class BackendPageService {
    private httpSrv;
    evento: EventEmitter<PageData | null>;
    pageKeys: any;
    pageKeysEvent: EventEmitter<any>;
    pageKeysTimeoutId: any;
    constructor(httpSrv: HttpService);
    getPageKeys(): Promise<unknown>;
    startReadingPageKeys(pageId: string): Promise<void>;
    getCurrentPage(): Promise<PageData | null>;
    savePage(id: string, datos: PageData): Promise<PageData | null>;
    static ɵfac: i0.ɵɵFactoryDeclaration<BackendPageService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<BackendPageService>;
}