import * as React from "react";
export interface OverlayPortalProviderProps {
    /**
     * The element overlays are rendered into. Pass the shadow root, or any element inside it.
     * `undefined` restores the default, so a subtree can opt back out.
     */
    container: Element | undefined;
    children: React.ReactNode;
}
export declare function OverlayPortalProvider({ container, children }: OverlayPortalProviderProps): React.JSX.Element;
/**
 * The container this overlay should render into. An explicit prop wins, so one panel can be placed
 * elsewhere without unmounting the provider around it.
 *
 * Not exported from the public barrel: this is a contract between the provider and the overlays
 * this library ships, not a knob for consumers — a consumer that needs the value has a provider.
 */
export declare function useOverlayPortalContainer(override?: Element): Element | undefined;