import { HttpService } from "../services";
import * as i0 from "@angular/core";
export declare class ImageFallbackDirective {
    private http;
    src?: string;
    default?: string;
    group: string;
    referer?: string;
    constructor(http: HttpService);
    update(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ImageFallbackDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ImageFallbackDirective, "img[fallback]", never, { "src": "src"; "default": "fallback"; "group": "group"; "referer": "referer"; }, {}, never, never, false, never>;
}