Inspect Keyboard Events with KeyCode Playground

Yo quick tip for when you keep getting one error per deploy/build 😮💨 when you build locally, Next.js build stops at the first TS error, so Vercel just shows one… you fix it… rebuild/redeploy… boom, another one. To see all the errors at once, run this locally: - npm run lint (to catch all Eslint issues) - npx tsc --noEmit (to catch typescript errors) tsc (typescript compiler) gives the full list, and you’re not playing whack‑a‑mole anymore. you can even configure it to your package.json or husky, saved me a lot of time. #Nextjs #TypeScript #Vercel #DevTips #Frontend #ChillFixes

🚀 Day 882 of #900DaysOfCode ✨ package.json vs package-lock.json If you’ve ever worked with npm, you’ve definitely seen these two files — but many developers use them without fully understanding their roles. In today’s post, I’ve explained the difference between package.json and package-lock.json in a clear and practical way. You’ll understand why both files exist, how they work together, and why they are crucial for consistent builds and team collaboration. If you’ve been confused about dependency versions, reproducible installs, or unexpected bugs across environments, this post will clear things up. 👇 Which one confused you the most when you first started? Share in the comments! #Day882 #learningoftheday #900daysofcodingchallenge #FrontendDevelopment #WebDevelopment #JavaScript #React #CodingCommunity #ES6 #FrontendDevelopment #NodeJS #NPM

Here, I explored how prototypes work internally, why direct __proto__ manipulation is unsafe, and how JS links objects through the prototype chain. A strong foundation in these concepts makes advanced topics like classes, inheritance, and performance optimization much clearer. 🚀 #JavaScript #PrototypalInheritance #WebDevelopment #Frontend #ES6 #CodingJourney #TechLearning #MERNStack #SoftwareEngineering

Understanding the JavaScript Event Loop is a game-changer for frontend developers. The call stack, microtask queue (Promises, async/await), and macrotask queue (setTimeout, I/O, DOM events) work together behind the scenes to keep JavaScript non-blocking. Mastering this concept helps you write predictable, performant, and bug-free async code. #JavaScript #FrontendDevelopment #WebDevelopment #AsyncProgramming #EventLoop

React Component Lifecycle – Made Simple Every React component follows a lifecycle — just like a human being: Birth → Update → Death Mounting (Birth) This is when a component is created and added to the DOM. Typical use cases: • Initial API calls • Setting up state • Subscriptions Updating Happens when state or props change and the component re-renders. Used for: • Reacting to data changes • Re-calculations • Side effects Unmounting (Death) When the component is removed from the DOM. Important for: • Cleanup • Removing event listeners • Clearing timers #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #ReactHooks #MERN #Coding #LearningByBuilding #DeveloperLife

🚀 React Compiler Performance Results As our frontend at ChargeAfter continues to scale with more complex, data-heavy flows, we wanted to improve real-world performance while reducing the need for manual optimization. After implementing React Compiler and removing manual memoization (useMemo/useCallback), here's what we achieved: 📊 Key Improvements: • Scripting Time: -8.0% faster • Long Tasks: -6 fewer blocking tasks • Memory Usage: Reduced across the board • Paint Performance: Measurably faster 💡 The React Compiler automatically optimizes component re-renders, eliminating the need for manual performance tuning while delivering better results. Real production data. Real performance gains! #ReactJS #WebPerformance #ReactCompiler #Frontend #JavaScript #WebDev #PerformanceOptimization

📦 package.json vs package-lock.json package.json → Defines what dependencies your project needs → Allows a range of versions (using ^ or ~) package-lock.json → Locks the exact versions that were installed → Ensures consistent installs across machines and environments package.json tells npm what you want package-lock.json ensures everyone gets the same thing Small files. Big impact on stability ⚡ #JavaScript #NodeJS #FrontendDevelopment #WebDevelopment #LearningInPublic

There’s a specific kind of "flow" that comes with using JavaScript across the entire stack. Moving from React on the frontend to Node/Express on the backend allows for a seamless mental model. It’s not just about speed; it's about the consistency of logic. Looking back at my early projects, I realize that mastering one stack deeply is often better than knowing five stacks surface-level. Are you a "Jack of all trades" or a "Master of one"? #MERNStack #FullStack #JavaScript #WebDev #OctoPrep

Day 1/30 — JavaScript Fundamentals Refresh ⚙️ Revisited closures and higher-order functions through a deceptively simple problem. A small reminder that in production code, clarity between return and side-effects like console.log matters more than it looks. Sharpening fundamentals to eliminate blind spots that scale into bugs. #JavaScript #EngineeringCraft #FullStackDeveloper #LeetCode #Consistency

🚀 Mastering the Event Loop in Node.js The Backbone of Async JavaScript Ever wondered how Node.js handles thousands of requests while running on a single thread? The secret lies in the Event Loop. The Event Loop: • Manages non-blocking I/O operations • Prioritizes tasks using microtask and macrotask queues • Delivers high performance without traditional multi-threading • Helps Node.js scale efficiently and reliably #NodeJS #JavaScript #EventLoop #AsyncProgramming #MERNStack #WebDevelopment #BackendDeveloper #Coding #InterviewPreparation #TechLearning #SoftwareEngineering