export declare class DomUtils {
    private static log;
    static iFrameLoaded(iFrameElement: HTMLIFrameElement): Promise<HTMLIFrameElement>;
    static getOrCreateHiddenIFrame(id: string, url: string): Promise<HTMLIFrameElement>;
    static getOrigin(url: string): string;
    static getQueryParam(name: string): string | undefined;
    static getTopWindow(window: Window): Window;
}