import { Response } from 'node-fetch';
type ByteProgressCallback = (info: {
    progress: number;
    eta: number;
    speed: string;
}) => void;
export declare function streamWithProgress(response: Response, progressCallback: ByteProgressCallback): Promise<string>;
/**
 * Extract a downloaded archive into `cwd`, which is created if missing.
 *
 * Dispatches on magic bytes, not the filename, because there is no filename to
 * dispatch on: `streamWithProgress` saves downloads as
 * `crypto.randomBytes(16).toString('hex')`, with no extension.
 *
 * Two gaps are deliberate, and both throw a named error rather than failing
 * obscurely: bzip2, and pre-POSIX v7 tars, which carry no magic to detect them by.
 *
 * Neither backend writes outside `cwd`.
 */
export declare function extractArchive(archivePath: string, cwd: string): Promise<void>;
type DownloadAndExtractFile = {
    showProgress: boolean;
    cwd: string;
    skipExtract?: boolean;
    dstFileName?: string;
};
export declare function downloadAndExtractFile(url: string, { cwd, skipExtract, dstFileName }: DownloadAndExtractFile): Promise<void>;
export declare function downloadAndGunzip(url: string): Promise<string>;
export {};
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