/**
 * Expands Zlib data
 * @param data The data to decompress
 * @param out Where to write the data. Saves memory if you know the decompressed size and provide an output buffer of that length.
 * @returns The decompressed version of the data
 */
export declare function unzlibSync(data: Uint8Array, out?: Uint8Array): Uint8Array;