import * as React from 'react';
export declare const PortalContainerContext: React.Context<HTMLElement | null>;
export type PortalProps = {
    /**
     * Where should the element be portaled to?
     *
     * If true, it will portal into nearest ThemeProvider's portalContainer.
     *
     * If false, it will not be portaled.
     *
     * Otherwise, it will portal to the element passed to `to`.
     *
     * If `to`/`to()` === `null`/`undefined`, the default behavior will be used (i.e. as if `portal` is not passed).
     *
     * @default true
     */
    portal?: boolean | {
        to: HTMLElement | null | undefined | (() => HTMLElement | null | undefined);
    };
};
/**
 * Helper component that portals children according to the following conditions:
 *   - renders null on server
 *   - if `portal` is set to true, renders into the element provided by PortalContainerContext.
 *   - if `portal` is set to false, renders as-is without portal.
 *   - otherwise renders into `portal.to` (can be an element or a function)
 *     - If `to`/`to()` === `null`/`undefined`, the default behavior will be used (i.e. as if `portal` is not passed).
 *     - E.g. `portal={{ to: () => document.querySelector('.may-not-exist') }}`.
 *
 * @private
 */
export declare const Portal: (props: React.PropsWithChildren<PortalProps>) => React.ReactNode;
export declare const usePortalTo: (portal: NonNullable<PortalProps["portal"]>) => HTMLElement | null;