/**
 * **usePopupAppearance()**
 *
 * Abstracts away calculating the appearance for a popup including if it should
 * be portalled or not, this is done to ensure that if the popup needs to render
 * as a modal that it is also forcibly portalled. If it's not portalled when rendering
 * as a modal it will appear below the top bar.
 */
export declare function usePopupAppearance({ appearance: _appearance, shouldRenderToParent: _shouldRenderToParent, }: {
    appearance: 'default' | 'UNSAFE_modal-below-sm';
    shouldRenderToParent?: boolean;
}): {
    appearance: "default" | "UNSAFE_modal-below-sm";
    shouldRenderToParent: boolean | undefined;
};