Next Js Express Custom server

server.js

const express = require("express");
const next = require("next");
const port = process.env.PORT || 3000;

const dev = true;
const app = next({ dev });
const handle = app.getRequestHandler();

app
  .prepare()
  .then(() => {
    const server = express();

    // server.use(express.static(__dirname + "/"));
    server.post("*", (req, res) => {
      return handle(req, res);
    });

    server.get("*", (req, res) => {
      return handle(req, res);
    });

    server.listen(port, (err) => {
      if (err) throw err;
      console.log("> Ready on http://localhost:3000");
    });
  })
  .catch((ex) => {
    console.error(ex.stack);
    process.exit(1);
  });