Node.js Stream PassThrough Usage

node.js PassThrough stream.md

const {PassThrough} = require('stream')
const fs = require('fs')

const d = new PassThrough()  

fs.createReadStream('tt2.js').pipe(d)  // can be piped from reaable stream

d.pipe(process.stdout)                 // can pipe to writable stream 
d.on('data', console.log)              // also like readable