How to write production ready Node.js Rest API with Javascript

index.js

var express = require("express"),
    bodyParser = require("body-parser"),
    logger = require('./logger/logger'),
    app = express(),
    port = 3070;

logger.js

var Logger = function() {};

Logger.prototype.info = function(logText) {
    console.log(new Date()+'info:::::'+logText);
};

Logger.prototype.debug = function(logText) {
    console.log(new Date()+'debug:::::'+logText);
};

Logger.prototype.error = function(logText) {
    console.log(new Date()+'error:::::'+logText);
};

module.exports = new Logger();