import { PlainTextElement } from '@slack/types';
import { JSXSlack } from '../../jsx';
import { OptionComposition } from './Option';
export interface OptgroupComposition {
    label: PlainTextElement;
    options: OptionComposition[];
}
export interface OptgroupProps {
    children: JSXSlack.ChildNodes;
    /** A plain-text string for the label of the option group. */
    label: string;
}
/**
 * Generate the composition object, for the group of option items in the static
 * select element.
 *
 * It must contain `<Option>` elements as its children.
 *
 * @returns The JSON of the composition object for option group
 */
export declare const Optgroup: import("../../jsx-internals").BuiltInComponent<OptgroupProps>;