import * as i0 from "@angular/core";
export declare abstract class AbstractLoaderDirective {
    readonly backgroundColor: import("@angular/core").InputSignal<string | undefined>;
    static ɵfac: i0.ɵɵFactoryDeclaration<AbstractLoaderDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<AbstractLoaderDirective, never, never, { "backgroundColor": { "alias": "backgroundColor"; "required": false; "isSignal": true; }; }, {}, never, never, true, never>;
}