text: const express = require("express");
  const PORT = process.env.PORT || 8080;
  const app = express();
  const exphbs = require("express-handlebars");
  const routes = require("./controllers/burgers_controller.js");
  
  app.use(express.static("public"));
  
  app.use(express.urlencoded({
      extended: true
  }));
  app.use(express.json());
  
  app.engine("handlebars", exphbs({
      defaultLayout: "main"
  }));
  app.set("view engine", "handlebars");
  
  app.use(routes);
  
  app.listen(PORT, () => {
      console.log("Listening on port: ", PORT);
  });