import { DownloadResponse } from '../@types/index.js';
/**
 * Triggers  a file download from the specified URL when called from a browser context.
 * @param {string} url - The URL of the file to download
 * @returns {Promise<void>} - A Promise that resolves when the file has been downloaded
 */
export declare function downloadFileBrowser(url: string): void;
/**
 * Downloads a file from a URL, or passes through an already-collected DownloadResponse
 * (returned by P2P transport).
 * @param {string | DownloadResponse} urlOrData - HTTP URL or pre-collected P2P response
 * @param {number} [index] - The file index, used as fallback filename for URL downloads
 * @returns {Promise<DownloadResponse>}
 */
export declare function downloadFile(urlOrData: string | DownloadResponse, index?: number): Promise<DownloadResponse>;