import { ReactiveController, ReactiveElement } from 'lit';
export type TypeGroup = ReactiveElement & {
    _internals?: ElementInternals;
};
export declare function typeGroup<T extends TypeGroup>(): ClassDecorator;
/**
 * Responsible for setting the role attribute of an element to "group" to indicate that the element is a group of related elements
 */
export declare class TypeGroupController<T extends TypeGroup> implements ReactiveController {
    private host;
    constructor(host: T);
    hostConnected(): void;
}