node.js - gzip压缩

/**
 * gzip压缩
 * @param {*} inpath 
 * @param {*} outpath 
 * @param {*} callback 
 */
var zlib = require('zlib');
function gZip(inpath, outpath, callback) {
  let readStream = fs.createReadStream(inpath);
  let writeStream = fs.createWriteStream(outpath);
  readStream.pipe(zlib.createGzip()).pipe(writeStream);
  writeStream.on('close', (data) => {
      //success
  });
  writeStream.on('error', (error) => {
      //error
  });
}