Mastering Node.js Core Concepts for Efficient Backend Development

Revised Node.js concepts to sharpen backend skills today. Focused on performance, scalability, and best practices. Small improvements lead to better backend systems. Staying consistent on the learning path #BackendDevelopment #NodeJS #MERNStack #JavaScript #WebDevelopment #DeveloperJourney

This diagram shows how a client sends a request, how the Node.js server processes it, and how the response is sent back. Node.js allows JavaScript to run on the server and handle multiple requests efficiently using a non-blocking approach. Save this post if you’re learning backend development. #NodeJS #BackendDevelopment #WebDevelopment #JavaScript #ProgrammingConcepts #LearnToCode #SoftwareDevelopment #TechLearning

Node.js – Day 9/30 The path Module When working with files in Node.js, hardcoding file paths can easily break across different operating systems. The path module helps handle file paths in a safe and consistent way. What the path module solves: o) Different path separators (/ vs \) o) Absolute vs relative paths o) Cleaner and more readable file handling Common usage: o) path.join() – safely joins paths o) path.resolve() – gets absolute paths o) __dirname with path for reliable file access Using the path module avoids environment-specific bugs and makes backend code more portable. #NodeJS #BackendDevelopment #JavaScript #FileHandling #LearningInPublic

Understanding the Event Loop in React with Real Code Examples ✍️ Post Description JavaScript is single-threaded, yet React applications handle async operations smoothly. The secret lies in the Event Loop. By understanding: • Call Stack • Microtask vs Macrotask • How React batches state updates you can avoid async bugs and write more predictable React code. Every React developer should master this concept. #ReactJS #JavaScript #EventLoop #AsyncJavaScript #FrontendDevelopment #ReactDeveloper #WebPerformance #Coding

🚨 𝐇𝐨𝐰 𝐭𝐨 𝐅𝐢𝐱 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 𝐢𝐬𝐨𝐥𝐚𝐭𝐞𝐝𝐌𝐨𝐝𝐮𝐥𝐞𝐬 𝐄𝐫𝐫𝐨𝐫 𝐢𝐧 𝐍𝐞𝐱𝐭.𝐣𝐬? If your Next.js build fails with this message: Re-exporting a type when isolatedModules is enabled requires using export type Don’t worry, it’s not a complex bug. It’s just about being clear with TypeScript. 𝐖𝐡𝐚𝐭’𝐬 𝐀𝐜𝐭𝐮𝐚𝐥𝐥𝐲 𝐇𝐚𝐩𝐩𝐞𝐧𝐢𝐧𝐠? When `isolatedModules` is enabled, each file is compiled independently. So TypeScript must know exactly: - what is real JavaScript code that needed at runtime. - what is only for type checking. If you export a type like a normal value, the compiler expects it to exist in JavaScript but it doesn’t. That’s why the build fails. ❌ 𝐖𝐫𝐨𝐧𝐠 𝐖𝐚𝐲 export { Profile, saveProfile } from './helpers'; If `Profile` is a type and `saveProfile` is a function, this causes errors in isolated builds. ✅ 𝐂𝐨𝐫𝐫𝐞𝐜𝐭 𝐖𝐚𝐲 // runtime exports export { saveProfile } from './helpers'; // type-only exports export type { Profile } from './helpers'; Easy Rule to Remember: - Use `export {}` for functions, components, constants - Use `export type {}` for types and interfaces Have you encountered this issue? 😀 #creowis #TypeScript #NextJS #FrontendDev #EngineeringTips #WebDevelopment

5 React Hooks that separate juniors from seniors ⚛️ Stop memorising. Start understanding. Swipe through and level up your React game 🚀 #React #WebDevelopment #Frontend #JavaScript #CodingTips

React useState Explained TypeScript useState is the most fundamental hook in React. It allows components to store and update data dynamically. 🔹 Returns a state value and an updater function 🔹 Triggers re-render when state changes 🔹 Type-safe and predictable in React + TypeScript #React #TypeScript #JavaScript #ReactHooks #FrontendDevelopment #WebDevelopment #CleanCode #Developers #LearnReact

Writing less code in React, but thinking more about structure and edge cases. That’s where most bugs hide. #ReactJS #FrontendDevelopment #JavaScript #CleanCode #SoftwareEngineering #DeveloperLife #WebDevelopment

You Can’t Skip the Power Source Early frontend me: “I’ll skip JavaScript and learn React directly.” Reality check: Every framework, library, and shiny tool is still plugged into the same core. React, Next.js, Angular, Vue, TypeScript— they all draw power from JavaScript fundamentals. Lesson learned the traditional way: Strong basics make advanced tools easier, cleaner, and scalable. Shortcuts feel fast, but foundations compound. Build depth first. Frameworks can wait. #FrontendDevelopment #JavaScript #WebDevelopment #DeveloperJourney #ProgrammingBasics #LearnTheFundamentals #TechReality #CareerGrowth