Watches the current folder and runs "node file" if changed

watchman.js

const fs = require('fs');
const exec = require('child_process').exec;
fs.watch('./', {encoding: 'buffer'}, (eventType, filename) => {
  if (filename) 
    exec(`node ${filename}`, (err, stdout, stderr) => {
      if (err) {
        console.log(err);
        return;
      }
      console.log(`file ${filename} has changed`);
      console.log(stdout);
    })
})