NodeJS - JSON : Objects and files

nodeJs.json.objectAndFiles.js

//Read json object from json file.
//Write json object to json file

var fs   = require('fs')
var util = require('util')

// __dirname is folder where script is running
// NOTE: Use always " in json file content
var cfgFile = __dirname + "/anything.json"

// Reading JSON file to object
var cfgFileContent = fs.readFileSync(cfgFile)
var config = JSON.parse(cfgFileContent)
console.log(util.inspect(config))

// Writing object to a JSON file
var file   = __dirname + '/object.json'
var object = {  
               "cities": [ "Madrid", "Barcelona", "Valencia"],
               "person": { "name": "Guillermo",
                           "surname": "Peña",
                           "age": 36
                         },
               "anything": "Hello!"
             }

fs.writeFileSync(file, JSON.stringify(object))