/**
 * Lightweight Slack file downloader for CLI bot mode.
 * Ported from cli-bak SlackFileDownloadService, stripped of NestJS deps.
 * Uses Node.js built-in https for API calls.
 */
export interface DownloadedFile {
    fileId: string;
    fileName: string;
    filePath: string;
    fileSize: number;
    threadId: string;
}
export declare function downloadInboundFiles(botToken: string, files: Array<{
    url_private: string;
    mimetype: string;
    name: string;
}>, threadId: string): Promise<DownloadedFile[]>;