import { ElementRef } from '@angular/core';
import * as i0 from "@angular/core";
export declare class ButtonGroupComponent {
    private readonly el;
    constructor(el: ElementRef<HTMLElement>);
    isFirst(btn: ElementRef<HTMLElement>): boolean;
    isLast(btn: ElementRef<HTMLElement>): boolean;
    private getDirectChildOfGroup;
    static ɵfac: i0.ɵɵFactoryDeclaration<ButtonGroupComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<ButtonGroupComponent, "riv-button-group", never, {}, {}, never, ["*"], false, never>;
}