import { FC, Ref } from 'react';
export declare const portals: string[];
export interface OverlayPortalRef {
    ref?: Ref<HTMLElement>;
}
export interface OverlayPortalMountEvent {
    overlayIndex: number;
    portalIndex: number;
    portalId: string;
    backdropIndex: number;
}
export interface OverlayPortalProps {
    appendToBody?: boolean;
    className?: string;
    id?: string;
    children: (props: OverlayPortalMountEvent) => any;
    onMount?: (event: OverlayPortalMountEvent) => void;
    onUnmount?: () => void;
}
export declare const OverlayPortal: FC<OverlayPortalProps & OverlayPortalRef>;