const fs = require('fs'); const path = require('path'); console.log('Start'); const filePath = path.join(__dirname, 'example.html'); if (!fs.existsSync(filePath)) { fs.writeFileSync(filePath, 'Hello World', 'utf8'); } fs.readFile(filePath, 'utf8', (err, data) => { console.log('File data read'); if (err) { console.log(__dirname); console.log(err.message); return; } setTimeout(() => { console.log('Timeout'); }, 0); setImmediate(() => { console.log('Immediate'); }); process.nextTick(() => { console.log('Next Tick'); }); }); console.log('End');