/// <reference types="node" />
/**
 * The method is to compress buffer data
 * @param data - The data to be compressed
 * @returns If the compressed data is less than the original
 * length after compression, otherwise return to the original data
 */
export declare function compressBytes(data: Buffer): Buffer;
/**
 * Decompress data according to a given length
 * @param data - Data that needs to be decompressed
 * @param target - The length that the data should have after decompression
 * @returns Decompressed data
 */
export declare function decompressBytes(data: Buffer, target: number): Buffer;