import { Component } from "react";
import type React from "react";
interface PortalProps {
    children: React.ReactNode;
    portalId: string;
    portalHost?: ShadowRoot;
}
/**
 * `Portal` is a React component that allows you to render children into a DOM node
 * that exists outside the DOM hierarchy of the parent component.
 *
 * @class
 * @param {PortalProps} props - The properties that define the `Portal` component.
 * @property {React.ReactNode} props.children - The children to be rendered into the `Portal`.
 * @property {string} props.portalId - The id of the DOM node into which the `Portal` will render.
 * @property {ShadowRoot} [props.portalHost] - The DOM node to host the `Portal`.
 */
declare class Portal extends Component<PortalProps> {
    constructor(props: PortalProps);
    componentDidMount(): void;
    componentWillUnmount(): void;
    private el;
    private portalRoot;
    render(): React.ReactPortal;
}
export default Portal;