import { NDKUser, NDKUserProfile } from '@nostr-dev-kit/ndk';
import { NostrBaseComponent, NCStatus } from '../base-component/nostr-base-component';
/**
 * NostrUserComponent
 * ==================
 * Extension of `NostrBaseComponent` that resolves and manages a Nostr user.
 *
 * Overview
 * - Accepts identity attributes (`npub`, `nip05`, or `pubkey`) and validates them.
 * - Resolves an `NDKUser` via the shared `nostrService` and fetches its profile.
 * - Exposes resolved `user` and `profile` to subclasses for rendering or logic.
 * - Emits lifecycle events for status and user readiness.
 *
 * Observed attributes
 * - `npub`   — user's Nostr public key (bech32 npub)
 * - `nip05`  — NIP-05 identifier (e.g. `alice@example.com`)
 * - `pubkey` — raw hex-encoded public key
 *
 * Events
 * - `nc:status` — from base, reflects connection and user/profile loading status
 * - `nc:user`   — fired when a user and profile are successfully resolved
 */
export declare class NostrUserComponent extends NostrBaseComponent {
    protected user: NDKUser | null;
    protected profile: NDKUserProfile | null;
    protected userStatus: {
        set: (s: NCStatus, e?: string) => void;
        get: () => NCStatus;
    };
    private loadSeq;
    private resolver;
    constructor(shadow?: boolean);
    /** Lifecycle methods */
    static get observedAttributes(): string[];
    connectedCallback(): void;
    attributeChangedCallback(name: string, oldValue: string | null, newValue: string | null): void;
    /** Protected methods */
    protected validateInputs(): boolean;
    protected resolveUserAndProfile(): Promise<void>;
    protected renderContent(): void;
    /** Hook for subclasses to react when user/profile are ready (e.g., render). */
    protected onUserReady(_user: NDKUser, _profile: NDKUserProfile | null): void;
}