const express = require('express'); const app = express(); const port = Number(process.env.PORT || 8080); app.get('/checkout/:id', (req, res) => { res.status(200).json({ id: req.params.id, status: 'ok', }); }); app.listen(port, () => { console.log(`checkout-api listening on http://127.0.0.1:${port}`); });