import { ReactiveController, ReactiveElement } from 'lit';
export type StateReadonly = ReactiveElement & {
    readonly: boolean;
    _internals?: ElementInternals;
};
export declare function stateReadonly<T extends StateReadonly>(): ClassDecorator;
/**
 * Responsible for managing the --readonly CSS state
 */
export declare class StateReadonlyController<T extends StateReadonly> implements ReactiveController {
    private host;
    constructor(host: T);
    hostConnected(): void;
    hostUpdated(): void;
}