node压缩，解压

index.js

const zlib=require('zlib');
const fs=require('fs');

//压缩

// const readStream=fs.createReadStream('./index.txt','utf8');
// const writeStream=fs.createWriteStream('./index.txt.gz');
// readStream.pipe(zlib.createGzip()).pipe(writeStream);


//解压
const readStream1=fs.createReadStream('./index.txt.gz');
const writeStream1=fs.createWriteStream('./index1.txt');
readStream1.pipe(zlib.createGunzip()).pipe(writeStream1);

运行

node index.js