/**
 * Button groups are designed to bring together button controls that are of a
 * similar nature. For example text formatting controls.
 */
export declare class CatButtonGroup {
    private buttonElements;
    hostElement: HTMLElement;
    /**
     * Adds an accessible label for the button group that
     * it is only shown in assistive technologies, like screen readers.
     */
    a11yLabel?: string;
    render(): any;
    private onSlotChange;
}