CPF - Brazilian individual taxpayer registry identification
Install with npm:
$ npm i @fabioalmeida/cpf
var cpf = require('@fabioalmeida/cpf')
console.log(cpf.isValid('02111606014'))
var cpfNum = cpf.generate()
console.log(cpf.isValid(cpfNum)) // result true
console.log(cpf.format(('02111606014'))) // 021.116.060-14