import { NativeElement } from '@nonoun/native-core';
/**
 * Expandable tree item with nesting support and selection.
 * @attr {boolean} expanded - Whether child items are visible
 * @attr {boolean} selected - Whether this item is selected
 * @attr {boolean} disabled - Disables interaction
 */
export declare class NTreeItem extends NativeElement {
    #private;
    static observedAttributes: string[];
    constructor();
    get expanded(): boolean;
    set expanded(val: boolean);
    get selected(): boolean;
    set selected(val: boolean);
    get disabled(): boolean;
    set disabled(val: boolean);
    setup(): void;
    teardown(): void;
    attributeChangedCallback(name: string, old: string | null, val: string | null): void;
}
//# sourceMappingURL=tree-item-element.d.ts.map