import { ReactiveController, ReactiveElement } from 'lit';
type Active = ReactiveElement & {
    disabled: boolean;
    readonly?: boolean;
    _internals?: ElementInternals;
};
export declare function stateActive<T extends Active>(): ClassDecorator;
/**
 * Responsible for adding an --active state to an element when it is in an active state
 * A shim fix for CSS psuedo-selector :active on keydown space/enter for custom elements
 */
export declare class StateActiveController<T extends Active> implements ReactiveController {
    #private;
    private host;
    constructor(host: T);
    hostConnected(): Promise<void>;
}
export {};