Express server boilerplate

const express = require('express');
const bodyParser = require('body-parser');
const mongoose = require('mongoose');
const ejs = require('ejs');

const app = express();

app.set("view engine", ejs);
app.use(bodyParser.urlencoded({extended:true}));
app.use(express.static("public"));

//connect to Mongo Atlas
//mongoose.connect("mongodb+srv://USER:PASSWORD@cluster0.dohur.mongodb.net/
//BASE?retryWrites=true&w=majority", 
//{useNewUrlParser: true, useUnifiedTopology: true});

//connect to local MongoDB
mongoose.connect('mongodb://localhost:27017/wikiDB', {useNewUrlParser: true, useUnifiedTopology: true});

app.get("/", function(req, res){
	res.send("Server is working");
});

//listening for environment port, or else 3000
app.listen(process.env.PORT || 3000, function(){
    console.log("Server is running and listening on port 3000");
});