index.js

// index.js

/**
 * Required External Modules
 */

const express = require("express");
const path = require("path");
// Object.freeze(Object.prototype);
 /**
 * App Variables
 */

Object.freeze(Object.prototype);

const app = express();
const port = process.env.PORT || "3000";
/**
 *  App Configuration
 */
app.set("views", path.join(__dirname, "views"));
app.set("view engine", "pug");
app.use(express.static(path.join(__dirname, "public")));
/**
 * Routes Definitions
 */
app.get("/", (req, res) => {
    res.render("index", { title: "Home" });
  });

app.get("/user", (req, res) => {
    res.render("user", { title: "Profile", userProfile: { nickname: "Auth0" } });
  });

const lodash = require('lodash');
const evilsrc = {constructor: {prototype: {evilkey: "evilvalue"}}};
lodash.defaultsDeep({}, evilsrc)

/**
 * Server Activation
 */
app.listen(port, () => {
    console.log(`Listening to requests on http://localhost:${port}`);
  });