import * as RMWC from '@rmwc/types';
import { MutableRefObject } from 'react';
export declare type PortalPropT = Element | string | boolean | undefined | null;
export declare type PortalProps = Omit<RMWC.HTMLProps<HTMLDivElement>, 'id' | 'ref'>;
export declare const Portal: (props: PortalProps) => JSX.Element;
export declare function PortalChild({ children, renderTo, menuSurfaceDomPositionRef }: {
    children: React.ReactNode;
    renderTo?: PortalPropT;
    menuSurfaceDomPositionRef?: MutableRefObject<HTMLDivElement | null>;
}): import("react/jsx-runtime").JSX.Element | null;