Redirect from HTTP to HTTPS (in production)

redirectToHTTPS.js

//redirect to https in production - add above all other routes
app.use('*', (req, res, next) => {
  if(process.env.NODE_ENV !== 'development' && req.headers['x-forwarded-proto'] !== 'https') {
    res.redirect(`https://${req.host}${req.url}`);
  }
  else {
    next();
  }
});