install-developer-dependencies.js

var fs = require('fs');

fs.readFile('package.json', 'utf8', function(err, data){
  
  console.log("reading package.json");
  
  if (err) throw err;
  obj = JSON.parse(data);
  
  if (obj.devDependencies) {
    for(var package in obj.devDependencies) {
      version = obj.devDependencies[package].replace(/^\^/, '');
      
      var cmd = "npm install -g " + package + " --version " + version;
      console.log(cmd);
      // execute the command
    }
  }
  else {
    console.log("no dev dependencies found.");
  }
});