text: const app = require('../src/app');
  const http = require('http');
  const debug = require('debug')('nodestr:server');
  
  const port = normalizePort(process.env.PORT || '3000');
  app.set('port', port);
  
  const server = http.createServer(app);
  
  server.listen(port);
  server.on('error', onError);
  server.on('listening', onListening);
  console.log('API rodando na porta ' + port);
  
  function normalizePort(val) {
      const port = parseInt(val, 10);
  
      if (isNaN(port)) {
          return val;
      }
  
      if (port >= 0) {
          return port;
      }
  
      return false;
  }
  
  function onError(error) {
      if (error.syscall !== 'listen') {
          throw error;
      }
  
      const bind = typeof port === 'string' ?
          'Pipe ' + port :
          'Port ' + port;
  
      switch (error.code) {
          case 'EACCES':
              console.error(bind + ' requires elevated privileges');
              process.exit(1);
              break;
          case 'EADDRINUSE':
              console.error(bind + 'is already in use');
              process.exit(1);
              break;
          default:
              throw error;
      }
  }
  
  function onListening() {
      const addr = server.address();
      const bind = typeof addr === 'string'
          ? 'pipe ' + addr
          : 'port ' + addr.port;
      debug('Listening on ' + bind);
  }