process.argv process.env CommonJS require CommonJS exports ES module import ES module export import.meta.url dynamic import

readFile writeFile appendFile mkdir recursive readdir stat createReadStream createWriteStream

path.join path.resolve path.extname path.basename URL constructor URLSearchParams fileURLToPath pathToFileURL

EventEmitter on emit EventEmitter once Buffer from string Buffer concat Buffer slice TextDecoder Readable stream Transform stream

http.createServer Parse request URL Read request body JSON response Status code Response headers Streaming response Abort request

Promise API async await setImmediate process.nextTick AbortController child_process execFile spawn process worker_threads

node:test basic test assert strictEqual mock timer concept process warning console time performance.now unhandledRejection handler uncaughtException monitor

Graceful shutdown Health endpoint Environment config Structured log object Cluster concept Rate-limit concept Cache headers Signal handling