How to define const in nodejs in global scope?

Question

I want to separate my app in to the parts to have something like MVC... Currently I figured out exports works and how to communicate between different files. The one thing i cant understand is that how to use constants in global scope? Currently i have something like this:

// start.js

const ROOT_DIR = __dirname;
const APP_DIR = ROOT_DIR + '/app/';
const MODULES_DIR = '/usr/local/lib/node_modules/';
const APP_PORT = 4935;

var server = require(APP_DIR + 'server.js');

server.start();

// server.js

exports.start = function() {
    var express = require(MODULES_DIR + 'express'),
        app = express(),
        http = require('http'),
        server = http.createServer(app),
        io = require(MODULES_DIR + 'socket.io').listen(server),
        fs = require('fs'),
        path = require('path');

    server.listen(APP_PORT);

    app.use(express.static(ROOT_DIR + '/assets'));

    app.get('/', function (req, res) {
        res.sendfile(ROOT_DIR + '/views/index.html');
    });
}

Is it possible to automatically assign this constants to server.js or i need to pass them as variables?

Answer 1

Object.defineProperty(global, 'MY_CONST', { value : 123 })

P.S. Please, don't do this