We have some new packages to install. All the packages are related to Grunt, which is a JavaScript automated task runner that is based on Node.js. We will define tasks and Grunt will carry them out. We will use the following versions:

Add these dependencies to package.json. This time we will create a new property named devDependencies. It is an object just like dependencies that is meant for development or testing. In package.json, devDependencies should look as follows:

"devDependencies": {
    "grunt-cli": "0.1.13",
    "grunt-contrib-clean": "0.5.0",
    "grunt-contrib-concat": "0.4.0",
    "grunt-contrib-jshint": "0.8.0",
    "grunt-contrib-nodeunit": "0.4.0",
    "grunt-contrib-uglify": "0.4.0",
    "grunt-preprocess": "4.0.0",
    "istanbul": "0.3.0"...