/**
 * @slot default - Custom content for the dialog header. When provided, the default header will not be rendered.
 */
export declare class NvDialogheader {
    el: HTMLNvDialogheaderElement;
    /****************************************************************************/
    /**
     * Sets the heading text for the dialog.
     */
    readonly heading: string;
    /**
     * Sets the subheading text for the dialog.
     */
    readonly subheading: string;
    /****************************************************************************/
    render(): any;
}