text: const env = require('./config/prod.env');
  
  Object.keys(env).forEach((key) => {
    if (!process.env[key]) {
      process.env[key] = JSON.parse(env[key]);
    }
  });
  
  const http = require('http');
  const https = require('https');
  const path = require('path');
  const express = require('express');
  const fs = require('fs');
  
  const app = express();
  
  require('./server')(app, process.env.SERVE_V4);
  
  let port = parseInt(process.env.PORT || 8080, 10);
  if (port === 443) {
    const credentials = {
      key: fs.readFileSync(path.join(__dirname, 'ssl.key'), 'utf8'),
      cert: fs.readFileSync(path.join(__dirname, 'ssl.crt'), 'utf8'),
      ca: fs.readFileSync(path.join(__dirname, 'ssl.ca'), 'utf8').split('\n\n'),
    };
    const httpsServer = https.createServer(credentials, app);
    httpsServer.listen(port, null, () => {
      console.log('HTTPS server started: https://localhost');
    });
    port = 80;
  }
  const httpServer = http.createServer(app);
  httpServer.listen(port, null, () => {
    console.log(`HTTP server started: http://localhost:${port}`);
  });
  