NODE: Write to JSON File Using FileSystem

node-wrte-to-json-file-using-filesystem.js

///////////////
// index.js: //
///////////////

var fs = require('fs')

fs.readFile('./users.json', 'utf-8', function(err, data) {
	if (err) throw err

	var arrayOfObjects = JSON.parse(data)
	arrayOfObjects.users.push({
		name: "Mikhail",
		age: 24
	})

	console.log(arrayOfObjects)

	fs.writeFile('./users.json', JSON.stringify(arrayOfObjects), 'utf-8', function(err) {
		if (err) throw err
		console.log('Done!')
	})
})

/////////////////
// users.json: //
/////////////////

//	{
//		"users": []
//	}