import React from 'react';
import type { PortalProps } from './types';
/**
 * @deprecated The browser top layer renders layered UI above the page without a portal. Use a
 * design system layer component (for example Popup, Tooltip or Modal dialog), or `Popover` and
 * `Dialog` from `@atlaskit/top-layer`. Content portalled to `document.body` renders below every open
 * top-layer surface. Design system components still use Portal on their `platform-dst-top-layer`
 * gate-off path.
 */
export default function Portal({ zIndex, children, mountStrategy, }: PortalProps): React.JSX.Element | null;