import { EventEmitter } from '../../stencil-public-runtime';
export declare class RuxOptionGroup {
    el: HTMLRuxOptionGroupElement;
    /**
     * The option group label
     */
    label?: string;
    /** @internal **/
    groupChanged: EventEmitter<void>;
    connectedCallback(): void;
    private _handleSlotChange;
    render(): any;
}