import { type PartInfo } from 'element-vir';
/**
 * Makes arbitrary modifications to the element that its attached to.
 *
 * @category Internal
 */
export declare const modifyElement: (renderKey: string | undefined, callback: (element: Element) => void, updateCallback?: ((element: Element) => void) | undefined) => import("element-vir").DirectiveResult<{
    new (partInfo: PartInfo): {
        readonly element: Element;
        lastKey: string | undefined;
        render(renderKey: string | undefined, callback: (element: Element) => void, updateCallback?: ((element: Element) => void) | undefined): symbol;
        get _$isConnected(): boolean;
        update(_part: import("lit-html").Part, props: Array<unknown>): unknown;
    };
}>;