import * as React from 'react';
/**
 * A portal element that moves the popup to a different part of the DOM.
 * By default, the portal element is appended to `<body>`.
 *
 * Documentation: https://base-ui.com
 */
declare function Portal(props: Portal.Props): React.JSX.Element | null;
declare namespace Portal {
    var propTypes: any;
}
declare namespace Portal {
    interface Props {
        children?: React.ReactNode;
        /**
         * A parent element to render the portal into.
         */
        container?: HTMLElement | null | React.RefObject<HTMLElement | null>;
        /**
         * Whether to keep the portal mounted in the DOM while the popup is hidden.
         * @default false
         */
        keepMounted?: boolean;
    }
    interface State {
    }
}
export { Portal };
