import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
import { EnvironmentService } from '../../services/environment.service';
import { ErrorService } from './error.service';
import { HeaderService } from './header.service';
export declare class BlobService {
    private readonly http;
    private readonly errorService;
    private readonly headerService;
    constructor(environmentService: EnvironmentService, http: HttpClient, errorService: ErrorService, headerService: HeaderService);
    /**
     * Stored apiUrl, that comes from the parent module.
     */
    private readonly apiUrl;
    /**
     * GET request, that expects blob response. It will download it, if the response has 'content-disposition' header.
     * Otherwise it will throw an error notification.
     * @param path The relative path to the backend endpoint. For example
     * @param params The query params, that goes with the request.
     * @example getBlob('/api/some/route', { id: 5 });
     */
    getBlob(path: string, params?: object): Observable<Blob>;
    /**
     * POST request, that expects blob response. It will download it, if the response has 'content-disposition' header.
     * Otherwise it will throw an error notification.
     * @param path The relative path to the backend endpoint. For example
     * @param params The query params, that goes with the request.
     * @example getBlob('/api/some/route', { id: 5 });
     */
    postForBlob(path: string, params?: object): Observable<Blob>;
    /**
     * This function handles the response, if the request was successfully.
     * @param resp Response, that came from the api request.
     */
    private handleBlobResponse;
    /**
     * This function downloads the getBlob and postForBlob functions' files.
     * @param blob The Blob instance.
     * @param filename Optional parameter. It overrides the 'content-disposition' header filename.
     */
    private downloadBlob;
}