NodeJS simple subprocess shell

subprocess.js

const {spawn} = require('child_process');
const child = spawn('/bin/bash');

process.stdin.on('data', function(data) {
  child.stdin.write(data);
});

child.stdout.on('data', function(data) {
  process.stdout.write(data);
});

child.stderr.on('data', function(data) {
  process.stderr.write(data);
});

child.on('exit', function(code) {
  process.exit(code);
});