/**
 * Helper utilities for Nostr like operations using NIP-25 External Content Reactions.
 * These are deliberately kept self-contained so `nostr-like` Web Component can import
 * everything from a single module without polluting the rest of the codebase.
 */
export interface LikeDetails {
    authorPubkey: string;
    date: Date;
    content: string;
}
export interface LikeCountResult {
    totalCount: number;
    likeDetails: LikeDetails[];
    likedCount: number;
    dislikedCount: number;
}
/**
 * Fetch all likes for a URL using NIP-25 kind 17 events
 */
export declare function fetchLikesForUrl(url: string, relays: string[]): Promise<LikeCountResult>;
/**
 * Create reaction event (kind 17)
 * @param url - URL to react to
 * @param content - '+' for like, '-' for unlike
 */
export declare function createReactionEvent(url: string, content: '+' | '-'): any;
/**
 * Create like event (kind 17)
 * @deprecated Use createReactionEvent(url, '+') instead
 */
export declare function createLikeEvent(url: string): any;
/**
 * Create unlike event (kind 17 with '-' content)
 * @deprecated Use createReactionEvent(url, '-') instead
 */
export declare function createUnlikeEvent(url: string): any;
/**
 * Check if user has liked a URL
 */
export declare function hasUserLiked(url: string, userPubkey: string, relays: string[]): Promise<boolean>;
/**
 * Get user's pubkey from NostrLogin
 */
export declare function getUserPubkey(): Promise<string | null>;
/**
 * Sign event with NostrLogin
 */
export declare function signEvent(event: any): Promise<any>;