import { type OnDestroy } from '@angular/core';
import * as i0 from "@angular/core";
export declare class TuiFocusTrap implements OnDestroy {
    private readonly doc;
    private readonly el;
    private activeElement;
    protected initialized: boolean;
    constructor();
    ngOnDestroy(): void;
    protected onFocusIn(node: Node): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<TuiFocusTrap, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<TuiFocusTrap, "[tuiFocusTrap]", never, {}, {}, never, never, true, never>;
}