index.js

const express = require('express');
const cors = require('cors');
const routerApi = require('./routes');
const { logErrors, errorHandler, boomErrorHandler } = require('./middlewares/error.handler');

const app = express();
const port = 3000;

app.use(express.json());

const whiteList = ['http://localhost:8080','https://myapp.com'];
const options = {
  origin: (origin, callback) => {
    if(whiteList.includes(origin)) {
      callback(null, true);
    } else {
      callback(new Error('Not allowed'));
    }
  }
};
app.use(cors(options));

app.get('/', (req, res) => {
  res.send('Hola mi server en express');
});

routerApi(app);
app.use(logErrors);
app.use(boomErrorHandler);
app.use(errorHandler);

app.listen(port, () => {
  console.log('Escuchando en el puerto ' +  port);
});