npm and package.json

npm is official package manager for node.js.
It can be runs throw command line and manages dependencies for an application.
With npm we can install a node.js package hosted on a node.js repository.
In this post i explain a simple package.json file that i wrote to distribute a node.js module (https://github.com/sergioska/noodlejuice).

{

  "name": "noodlejuise",

  "description": "Mini toolkit for node.js",

  "author": "Sergio Sicari <sergiosicari[]gmail.com>",

  "dependencies": {

        "mysql": ">=2.0.0-alpha9",

        "socket.io": ">=0.9.16",

        "node-mysql": ">=0.3.4",

        "csv": ">=0.3.4"

  },

  "directories": {

          "lib": "./lib"

  },

  "repository": {

            "type": "git",

            "url": "git://github.com/sergioska/noodlejuice"

  },

  "engine": "node 0.11.7"

}

In dependencies section there are dependencies module required by own application; in this case mysql, socket.io, node-mysql, csv module.

In repository section there is a link of application repository.

In this way we can install this application only with this package.json file; in a directory that contains this file we run the following command:

npm install