/// <reference types="node" />
/// <reference types="node" />
/**
 * Decompresses zstd-compressed data from a buffer.
 *
 * This is a synchronous buffer-to-buffer decompression utility.
 * For streaming zstd decompression, use the decompressMaybe transform stream.
 *
 * @param compressed Buffer containing zstd-compressed data
 * @returns Decompressed data as a Buffer
 * @throws Error if decompression fails
 */
export declare function decompressZstd(compressed: Buffer): Buffer;