Simple command-line util for beautifying js files.

codestyle.js

// prereq: "npm install beautifyjs"

var jsb = require('beautifyjs').js_beautify,
  fs = require('fs'),
  fileName = process.argv[2];

if ('string' !== typeof fileName) {
  console.error('Usage: node codestyle.js fileName');
  return;
}

fs.readFile(fileName, function (err, data) {
  if (err) {
    throw err;
  }
  console.log(jsb(data.toString(), {
    indent_size: 2,
    jslint_happy: true
  }));
});