import type { Request, Response } from 'express';
import type { Metadata } from 'twtxt-lib';
import { NodeCache } from '@cacheable/node-cache';
import { QueryParameters } from '../../types.js';
export interface MetadataHandler {
    cache: NodeCache<unknown>;
    metadataParameter: QueryParameters['metadata'];
    req: Request;
    res: Response;
}
/**
 *
 * @param req
 * @param res
 * @param cache
 * @param metadataParameter
 */
export default function metadataHandler(req: Request, res: Response, metadata: Metadata, metadataParameter: QueryParameters['metadata']): void;