const detectPort = require('@fibjs/detect-port'); const availablePort = detectPort();

const detectPort = require('@fibjs/detect-port'); const port = 3000; const availablePort = detectPort(port); if (availablePort === port) { console.log(`port ${port} is available!`); } else { console.log(`port ${port} is not available! Got a random available port: ${availablePort} for you.`); }