import { ReactNode } from 'react';
export type PortalProps = {
    children?: ReactNode;
};
declare const Portal: {
    ({ children }: PortalProps): null;
    Host: ({ children }: {
        children: ReactNode;
        pageId: number;
    }) => JSX.Element;
    add: (e: ReactNode, id: number | null) => number;
    remove: (key: number) => void;
    update: (key: number, e: ReactNode) => void;
};
export default Portal;