import { NativeElement } from '@nonoun/native-core';
/**
 * Tree view with roving focus and keyboard navigation across nested items.
 * @attr {boolean} disabled - Disables interaction
 */
export declare class NTree extends NativeElement {
    #private;
    static observedAttributes: string[];
    constructor();
    get disabled(): boolean;
    set disabled(val: boolean);
    attributeChangedCallback(name: string, old: string | null, val: string | null): void;
    setup(): void;
    teardown(): void;
}
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