import { ButtonGroupItem } from '../types';
/**
 * Get the label for a button described by a ButtonGroupItem object.
 *
 * Normally, this is the `label` property. But if the `label` property is missing, we fall back to
 * the `value` property, and if the `label` property is null we return an empty string.
 *
 * @param button Button description
 * @return Button label
 */
export declare function getButtonLabel(button: ButtonGroupItem): string | number;