import { Dispatch, SetStateAction } from 'react';
import { PanelPosition, PanelSizeExact } from './types';
export type OpenExternalWindowResponse = {
    externalWindow: Window | null;
    onCloseExternalWindow: (() => void) | null;
};
/**
 * Open and scaffold the new external window.
 *
 * The main motivation for extracting these procedures into a function is for testing ease. JSDOM does not mock out the
 * entire window object, making the PopoutWindow component difficult to unit test without extensive mocking. Instead, we
 * can avoid mocking most of the window methods entirely by conditionally calling an alternative to `openExternalWindow`
 * during unit testing by providing a truthy `openExternalWindowFn` prop.
 */
export declare const openExternalWindow: ({ title, size, setContainerElement, setHeadElement, observeStyleChanges, className, position, }: {
    title: string;
    size: PanelSizeExact;
    setContainerElement: Dispatch<SetStateAction<HTMLElement | undefined>>;
    setHeadElement: Dispatch<SetStateAction<HTMLElement | undefined>>;
    observeStyleChanges?: boolean;
    className?: string;
    position: PanelPosition;
}) => OpenExternalWindowResponse;