import { CSSProperties, FC, LegacyRef } from 'react';
export declare const portals: string[];
export interface OverlayPortalRef {
    /**
     * Reference to the overlay portal element.
     */
    ref?: LegacyRef<HTMLElement>;
}
/**
 * Represents an event that occurs when an overlay portal is mounted.
 */
export interface OverlayPortalMountEvent {
    /**
     * The index of the overlay.
     */
    overlayIndex: number;
    /**
     * The index of the portal.
     */
    portalIndex: number;
    /**
     * The ID of the portal.
     */
    portalId: string;
    /**
     * The index of the backdrop.
     */
    backdropIndex: number;
}
export interface OverlayPortalProps {
    /**
     * If true, the overlay portal will be appended to the body.
     * @default true
     */
    appendToBody?: boolean;
    /**
     * The class name of the overlay portal.
     */
    className?: string;
    /**
     * The style of the overlay portal.
     */
    style?: CSSProperties;
    /**
     * The id of the overlay portal.
     */
    id?: string;
    /**
     * A function that returns the children of the overlay portal. It receives an object of type OverlayPortalMountEvent as an argument.
     */
    children: (props: OverlayPortalMountEvent) => any;
    /**
     * A function that is called when the overlay portal mounts. It receives an object of type OverlayPortalMountEvent as an argument.
     */
    onMount?: (event: OverlayPortalMountEvent) => void;
    /**
     * A function that is called when the overlay portal unmounts.
     */
    onUnmount?: () => void;
}
export declare const OverlayPortal: FC<OverlayPortalProps & OverlayPortalRef>;