import fs from 'fs/promises';import { WebSocketServer } from 'ws';const wss = new WebSocketServer({ port: 59497 });const timestamp = new Date().toISOString().slice(0, 19).replace(/[:]/g, '-');const filename = `wslog-${timestamp}.txt`;const f = await fs.open(filename, 'w');console.log(`Writing to ${filename}`);console.log('Ctrl-C to stop');process.on('SIGINT', () => {console.log(`\nWritten to ${filename}`);process.exit();});wss.on('connection', async ws => {ws.on('message', data => {const s = data.toString();f.write(s + '\n');console.log(s);});});