import { HttpClient, HttpHeaders } from '@angular/common/http';
import { Observable } from 'rxjs';
import { AnnouncementItem } from '../model/announcement-item';
import * as i0 from "@angular/core";
export declare class AnnouncementsApiService {
    private http;
    httpOptions: {
        headers: HttpHeaders;
    };
    constructor(http: HttpClient);
    getAnnouncements(appId: string, startDateTo: string, endDateFrom: string): Observable<Array<AnnouncementItem>>;
    getAnnouncementById(id: string): Observable<AnnouncementItem>;
    static ɵfac: i0.ɵɵFactoryDeclaration<AnnouncementsApiService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<AnnouncementsApiService>;
}
