import { default as React, ReactElement } from 'react';
import { ItemProps } from './item';
export declare const IS_ITEM: unique symbol;
/**
 * Type guard that checks whether a React node is an Item component.
 *
 * @param el - React node to test.
 * @returns `true` if the node is an Item element.
 *
 * @internal
 */
export declare function isItem(el: React.ReactNode): el is ReactElement<ItemProps>;