red_de_investigacion/app.js

var express = require('express');
var app = express();
var cors = require('cors');
app.use(cors());
app.get('/', function(req, res) {
    res.send('that is works');
});

app.use(express.json()) // for parsing application/json
app.use(express.urlencoded({ extended: true }))
app.use(require('./routes/index.js'))
app.listen(3062, function() {
    console.log('Example app listening on port 3062!');
});