text: var express = require("express");
  var exhb = require("express-handlebars");
  
  var PORT = process.env.PORT || 3000;
  
  var app = express();
  
  app.use(express.static("public"));
  
  app.use(express.urlencoded({ extended: true }));
  app.use(express.json());
  
  app.engine("handlebars", exhb({ defaultLayout: "main" }));
  app.set("view engine", "handlebars");
  
  var router = require("./controllers/burgerController.js");
  
  app.use(router);
  
  app.listen(PORT, function() {
    console.log("App now listening at localhost:" + PORT);
  });