/**
 * Render widgets in a given element.
 *
 * @param element (default document.documentElement) The element containing widget state and views.
 * @param loader (default requireLoader) The function used to look up the modules containing
 * the widgets' models and views classes. (The default loader looks them up on unpkg.com)
 */
export declare function renderWidgets(element?: HTMLElement, loader?: (moduleName: string, moduleVersion: string) => Promise<any>): void;
