import { NativeElement } from '@nonoun/native-core';
/**
 * `<n-controller>` — Structural trait provider.
 *
 * Three modes:
 * - **Wrapper** (default): Applies traits to first element child
 * - **Selector** (`for="selector"`): Applies traits to matching descendants
 * - **Provider** (`provides="..."`): Exposes a StoreController via context
 */
export declare class NController extends NativeElement {
    #private;
    static observedAttributes: string[];
    connectedCallback(): void;
    disconnectedCallback(): void;
    setup(): void;
    teardown(): void;
    attributeChangedCallback(name: string, old: string | null, val: string | null): void;
}
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