Must read Topics for Mid Level Node.js Developer Interview Preparation
Must read Topics for Mid Level Node.js Developer Interview Preparation 1. Core Node.js Fundamentals Node.js Architecture (Single-threaded, Event Loop, Non-blocking I/O)✅ Understanding require and ES Modules ( import/export )✅ Core Modules: fs path os events http / https stream (Readable, Writable, Transform, Duplex) Process Management: process (environment variables, process.nextTick , process.exit ) Handling Uncaught Exceptions Timers ( setTimeout , setInterval , setImmediate ) Working with Buffers Working with the File System ( fs.promises , async/await with fs ) Child Processes ( child_process , exec , spawn , fork ) 2. Package Management with npm and Yarn Managing dependencies ( package.json , package-lock.json )✅ Semantic Versioning ( ^ , ~ , exact versions)✅ Local vs. global packages✅ Scripts in package.json (e.g., npm run dev )✅ Using npx ✅ 3. Asynchronous Programming Callbacks✅ Promises✅ async/await ✅ Event Emitters Streams and Pipelining Error handling in async code...