server.js

/* eslint-disable prettier/prettier */
const express = require('express');
const next = require('next');
const path = require('path');
const bodyParser = require('body-parser');
const routes = require('./routes');

const dev = process.env.NODE_ENV !== 'production';

const app = next({ dir: '.', dev });
const handle = routes.getRequestHandler(app);

app.prepare().then(() => {
  const server = express();
  // Static files
  // https://github.com/zeit/next.js/tree/4.2.3#user-content-static-file-serving-eg-images
  server.use(
    '/images',
    express.static(path.join(__dirname, 'images'), {
      maxAge: dev ? '0' : '365d'
    })
  );

  server.use(bodyParser.json());

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

  const PORT = process.env.PORT || 3000;

  server.listen(PORT, (err) => {
    if (err) throw err;
    console.log(`> Read on http://localhost:${PORT}`);
  });
});