import { BaseDirective } from '../directives';
import * as i0 from "@angular/core";
export declare const BUTTON_GROUP_CONFIG: import("@angular/core").InjectionToken<string>;
export declare abstract class ButtonGroupBase extends BaseDirective {
    static ɵfac: i0.ɵɵFactoryDeclaration<ButtonGroupBase, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ButtonGroupBase, never, never, {}, {}, never, never, true, never>;
}