Introducing Logpaint: A Lightweight Node.js Logger

One small JavaScript concept. Big real-world impact. If you don’t understand mutable vs immutable data, you’ll eventually hit bugs you didn’t expect. Especially in React. Mutable = flexible Immutable = safer Good developers know when to use each. Which causes more pain in real projects: mutation bugs or async bugs? 👇 #javascript #reactjs #frontenddevelopment #webdevelopment #softwareengineering #programming

Problem: JavaScript’s `.sort()` mutates the array. Solution: Use `.toSorted()` instead. It returns a new sorted array. —— 👋 Join 30,000+ SWEs learning JS, React, Node.js, and Software Architecture: https://thetshaped.dev/ ——— 💾 Save this for later. ♻ Repost to help others find it. ➕ Follow Petar Ivanov + turn on notifications. #javascript #softwareengineering #programming

There’s a type of mistake that every developer never forgets… the stupid ones 😅 Not “stupid” because they are complex — but because the situation was simple and obvious, yet the mistake still cost you a lot of time. In my Node.js journey, my first mistake was building a REST API and completely forgetting about CORS 😊 But the dumbest mistake I made in the beginning was copying and pasting entire Node.js projects… including the node_modules folder. Yes… you need the patience of a camel 😏 Three JavaScript files turning into 260MB… and I repeated that process multiple times before I finally learned about: npm install That’s when I understood something important: It’s not just about writing code — it’s about understanding how the ecosystem works. These “stupid” mistakes are the ones that stay with you the longest… and turn you into a better developer. #NodeJS #Programming #WebDevelopment #JavaScript #CodingLife #SoftwareDevelopment #LearnToCode #Debugging #Developers #TechJourney

🚀 JavaScript Event Loop: Your Async Superpower! 🌀 Confused how JS juggles multiple tasks on one single thread? 😵 Let's break it down visually! 1. Call Stack 📚: Runs your code line-by-line (sync stuff first!). 2. Web APIs 🌐: Handles async like setTimeout or fetch outside the stack. 3. Queues: • Microtask Queue ⚡ (Promises – VIP priority! Executes ASAP) • Callback Queue ⏳ (setTimeout – waits its turn) 4. Event Loop 🔄: Magic conductor! Checks empty stack → Microtasks → Callbacks. Pro Tip: Master this for smoother React hooks, Node servers, or any async magic! 💥 What’s your biggest Event Loop "aha" moment? Drop it below! 👇 #JavaScript #EventLoop #WebDev #ReactJS #NodeJS #Frontend #AsyncJS #CodingTips #Programming #DevCommunity #SoftwareEngineering #LearnToCode

🚀 6 React Hooks that changed how I write code — and will change yours too. If you're still confused about when to use what, here's the simplest breakdown: 🔵 useState → Store & update values. Every re-render starts here. 🌐 useEffect → Talk to the outside world (APIs, DOM, subscriptions). 📦 useRef → Hold a value WITHOUT triggering a re-render. A hidden drawer for your data. 🧠 useCallback → Memoize functions so they don't get recreated on every render. ⚡ useMemo → Cache expensive calculations. Only recompute when dependencies change. 🌍 useContext → Share state globally. No more prop drilling through 5 layers. The moment these clicked for me, my components became cleaner, faster, and way easier to debug. Which hook took you the longest to truly understand? Drop it in the comments 👇 #ReactJS #WebDevelopment #JavaScript #Frontend #Programming #React #SoftwareEngineering #100DaysOfCode #CodeNewbie #TechEducation #FrontendDeveloper #ReactHooks

Quick update on my CLI project 👇 I was planning to publish it by now, but I’ve decided to delay the release a bit to make it more solid. Over the past few days, I’ve: • Improved the backend structure (clean, scalable folders) • Added a basic authentication system (JWT-based) • Made the starter feel closer to a real production setup Instead of rushing it out, I want this to be something developers can actually use and build on comfortably. Next steps: • Improve error handling & validation • Add a few more useful defaults What I am building : https://lnkd.in/gdiYgDaR Will share once it’s ready 🚀 #buildinpublic #webdevelopment #javascript #nodejs #nextjs #mern #developer #softwareengineering #devtools #opensource #programming #tech

JavaScript code runs inside a special environment called the JavaScript engine (like in a browser or Node.js). When you write code, the engine first reads it and understands its structure through a process called parsing. After that, the code is converted into a form (bytecode) that the computer can execute. During execution, the engine uses two main parts: the memory heap to store variables and data, and the call stack to manage function execution. It runs code line by line in a synchronous way, meaning one task at a time. For handling asynchronous tasks like timers, APIs, or events, JavaScript uses the event loop along with callback queues and Web APIs. This system ensures that tasks are executed smoothly without blocking the main thread, and finally, the result is shown in the browser or console. #JavaScript #NodeJS #WebDevelopment #Programming #Coding #Developer #Frontend #Backend #MERNStack #CodeNewbie

JavaScript vs. TypeScript: The 'Cocomelon' Edition! Ever feel like your JavaScript code is a bit... chaotic? Like a toddler running around with no shoes? That’s where TypeScript comes in! Think of JavaScript as the fun, flexible playground where you can build anything quickly. It’s dynamic, it’s fast, but sometimes things get messy. TypeScript is like adding a 'Safety Helmet' and 'Rules' to that playground. It’s a superset of JavaScript that adds Static Typing. Why make the switch? Catch Bugs Early: Find errors while you type, not when the app crashes. Better Tooling: Enjoy super-powered autocompletion in VS Code. Scalability: It makes large projects much easier for teams to manage. Is your team Team JS or Team TS? Let's discuss below! #JavaScript #TypeScript #WebDevelopment #CodingLife #SoftwareEngineering #TechSimplified #Frontend #Programming

𝗧𝘆𝗽𝗲𝗦𝗰𝗿𝗶𝗽𝘁 𝟳 is not about new features. It is about making TypeScript faster. Before, the TypeScript compiler worked on Node.js. Node.js is single-threaded, so it cannot use all CPU cores. Because of this, large projects can feel slow. Builds take more time, and sometimes the editor becomes slow too. Now, TypeScript 7 is being rewritten in Go programming language. This makes it a native tool, not just a JavaScript program. Because of that: 𝗶𝘁 𝗰𝗮𝗻 𝘂𝘀𝗲 𝗺𝘂𝗹𝘁𝗶𝗽𝗹𝗲 𝗖𝗣𝗨 𝗰𝗼𝗿𝗲𝘀 𝗶𝘁 𝘄𝗼𝗿𝗸𝘀 𝗳𝗮𝘀𝘁𝗲𝗿 𝗶𝘁 𝘂𝘀𝗲𝘀 𝗺𝗲𝗺𝗼𝗿𝘆 𝗯𝗲𝘁𝘁𝗲𝗿 In real projects, this means: faster build time faster autocomplete and navigation better performance in big projects and monorepos 𝗜𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁: nothing changes in your code. You write the same TypeScript as before. This is not a new language. It is a faster engine. #TypeScript #FrontendEngineering #JavaScript #SoftwareEngineering #DX

Ever wondered how a single server can handle thousands of users at the same time? It’s a concept in JavaScript and Node.js called the Event Loop. Node.js runs on a single thread. That means it can only execute one thing at a time. So how does it handle thousands of users? It doesn’t “do everything at once”. Instead, it uses a smart system: - It executes synchronous code immediately - It sends slow tasks (like database calls, API requests, file operations) to the background - It continues handling other requests When those tasks finish, it comes back and processes the result This coordination is handled by the Event Loop. The Event Loop is not just a JavaScript feature. It’s a fundamental system design principle behind modern backend architecture. It explains how applications stay: - Fast under heavy load - Responsive with many concurrent users - Efficient without blocking resources #JavaScript #NodeJS #BackendDevelopment #WebDevelopment #SystemDesign  #EventLoop #Programming #SoftwareEngineering #Coding #FullStackDevelopment #BackendEngineering #Scalability #TechLearning #Developers #ComputerScience