import { ReactiveControllerHost } from 'lit';
export declare class FocusTrapController<T extends ReactiveControllerHost & HTMLElement> {
    private readonly _host;
    private readonly _onDeactivate;
    private _container;
    private readonly _refCallbackContainer;
    constructor(_host: T, _onDeactivate: () => void);
    refContainer(): import('lit-html/directive.js').DirectiveResult<typeof import('lit-html/directives/ref.js').RefDirective>;
    directive(open?: boolean, persistent?: boolean): import('lit-html/directive.js').DirectiveResult<import('lit-html/directive.js').DirectiveClass>;
}