modulFSA-3/back/app.js

const express = require('express');
const port = 3002;
const bodyParser = require('body-parser');
const routes = require('./routes/routes')
const app = express();

// Use Node.js body parsing middleware
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
    extended: true,
}));
app.use((req, res, next) => {
    res.header('Access-Control-Allow-Origin', '*');

    res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept');
    next();

    app.options('*', (req, res) => {
        // allowed XHR methods  
        res.header('Access-Control-Allow-Methods', 'GET, PATCH, PUT, POST, DELETE, OPTIONS');
        res.send();
    });
});
routes(app);

// Start the server
const server = app.listen(port, (error) => {
    if (error) return console.log(`Error: ${error}`);

    console.log(`Server listening on port ${server.address().port}`);
});