Переработка скрипта без внешних библиотек

const express = require('express'); const argv = require('process').argv.slice(2); const { spawn } = require('child_process');

const app = express(); const port = argv[0] || 3000;

app.get('/', (req, res) => { res.send('Hello World!'); });

app.listen(port, () => { console.log(Server running on port ${port}); const url = http://localhost:${port}; spawn(/^win/.test(process.platform) ? 'explorer' : 'open', [url]); });