chainig_streams.js

var fs = require('fs');

var zlib = require('zlib');

fs.createReadStream('input.txt').pipe(zlib.createGzip()).pipe(fs.createWriteStream('input.txt.gz'));
console.log('File Compressed');

fs.createReadStream('input.txt.gz').pipe(zlib.createGunzip()).pipe(fs.createWriteStream('input2.txt'));
console.log('File Decompressed');