/**
 * @jsxRuntime classic
 * @jsx jsx
 */
import React from 'react';
import type { CustomItemComponentProps } from '@atlaskit/menu/types';
/**
 * @deprecated `@atlaskit/side-navigation` is deprecated. Use `@atlaskit/navigation-system` instead.
 */
export type HeaderProps = {
    /**
     * Element to render before the item text.
     * Generally should be an [icon](https://atlassian.design/components/icon/icon-explorer) component.
     */
    iconBefore?: React.ReactNode;
    /**
     * Event that is triggered when the element is clicked.
     */
    onClick?: (event: React.MouseEvent | React.KeyboardEvent) => void;
    /**
     * Description of the item.
     * This will render smaller text below the primary text of the item as well as slightly increasing the height of the item.
     */
    description?: string | JSX.Element;
    /**
     * Primary content for the item.
     */
    children?: React.ReactNode;
    /**
     * A `testId` prop is provided for specified elements,
     * which is a unique string that appears as a data attribute `data-testid` in the rendered code,
     * serving as a hook for automated tests.
     */
    testId?: string;
    /**
     * Custom component to render as an item.
     * This can be both a functional component or a class component.
     * __Will return `null` if no component is defined.__
     * __NOTE:__ Make sure the reference for this component does not change between renders else undefined behavior may happen.
     */
    component?: React.ComponentType<CustomItemComponentProps>;
};
/**
 * __Header__
 *
 * - [Examples](https://atlassian.design/components/side-navigation/examples#header-and-footer)
 * - [Code](https://atlassian.design/components/side-navigation/code)
 *
 * @deprecated `@atlaskit/side-navigation` is deprecated. Use `@atlaskit/navigation-system` instead.
 */
export declare const Header: React.ForwardRefExoticComponent<React.PropsWithoutRef<HeaderProps> & React.RefAttributes<HTMLElement>>;