import { ElementRef } from '@angular/core';
import { BComponent, DisplaySize } from '../bcomponent';
import { ButtonBComponent } from '../button/button.bcomponent';
export declare class ButtonGroupBase extends BComponent {
    items: ButtonBComponent[];
    size: DisplaySize;
    constructor(el?: ElementRef);
    Initialize: (items?: ButtonBComponent[], size?: "lg" | "sm" | "xs") => this;
    ngOnChildChanges: () => void;
}
export declare class ButtonGroupBComponent extends ButtonGroupBase {
    constructor();
}
export declare class ButtonGroupBDirective extends ButtonGroupBase {
    constructor(el: ElementRef);
}