import { Event, Kind } from 'nostr-tools';
import { Authenticator } from '@smontero/nostr-ual';
import { TagType } from '../enum';
export declare function buildEvent<K extends number = Kind>(e: {
    kind: K;
    tags: string[][];
    content: string;
    createdAt?: Date;
}, authenticator: Authenticator): Promise<Event<K>>;
export declare function toPublished(obj: any, e: Event<any>): any;
export declare function nostrDate(date?: Date | number): number;
export declare function fromNostrDate(date: number): Date;
export declare function getTagValues<K extends number>(e: Event<K>, tagType: TagType, transformerFn?: (params: string[]) => any): any[];
export declare function getTagValue(e: Event, tagType: TagType, transformerFn?: (params: string[]) => any): any;