import { DomSanitizer, SafeUrl } from '@angular/platform-browser';
import { Observable } from 'rxjs';
import { ApiHttpClient } from '../client/api.client';
import { HttpOptions } from '../providers';
/**
 * API Photo Service
 * =============================================================================
 * For the given URL and parameters:
 *
 *  1. Fetch the photograph blob.
 *  2. Convert it into a SafeUrl, or undefined if the API returned nothing.
 *
 * @see https://api.d4h.org/v2/documentation#operation/getMembershipMembersMemberImage
 * @see https://api.d4h.org/v2/documentation#operation/getMembershipImage
 */
export declare class PhotoService {
    protected readonly http: ApiHttpClient;
    protected readonly sanitizer: DomSanitizer;
    constructor(http: ApiHttpClient, sanitizer: DomSanitizer);
    get(url: string, options?: HttpOptions): Observable<SafeUrl>;
    private sanitize;
    /**
     * Error Handler
     * ===========================================================================
     * There are cases where the file physically does not exist in our object
     * store. This catches any 404 errors so the app can display the default
     * placeholder instead.
     *
     * @see https://github.com/D4H/decisions-project/issues/3293
     */
    private errorHandler;
}