index.js

const express = require('express');
const http = require('http');
const socketio = require('socket.io');
const config = require('config');
const app = express();
const path = require('path');

const server = http.createServer(app);
const io = socketio(server, {
  cors: {
    origin: '*',
  },
});

app.use((req, res, next) => {
  res.setHeader('Access-Control-Allow-Origin', '*');
  next();
});

app.use(express.static(path.join(__dirname, 'client/build')));

require('./startup/morgan')(app);
require('./startup/cors')(app);
require('./startup/db')(app);
require('./startup/routes')(app);
require('./WsRoute/index')(io);

app.get('/*', function (req, res) {
  res.sendFile(path.join(__dirname, 'client/build/index.html'), function (err) {
    if (err) {
      res.status(500).send(err);
    }
  });
});

// Run when client connects

const port = process.env.PORT || config.get('port');
server.listen(port, () => console.log(`Listening on port ${port}...`));

process.on('uncaughtException', function (err, req, res, next) {
  console.log('Node Server startup Error', err);
});

module.exports = server;