Debugging Lessons from a React Project

My code was perfect, obviously.😑 Until I hit deploy and everything broke. This is how I'm actually learning to debug. Recently, I spent 4 hours trying to figure out why my React component wasn't re-rendering after an API call. Turned out, I was mutating state directly instead of using setState correctly. Rookie mistake? Absolutely. Invaluable lesson? Even more so. Debugging isn't just about fixing bugs; it's about understanding why they happen. It's like being a detective with a magnifying glass to your code. 💻 My top 3 debugging tools and techniques: 🧑💻console.log() (The OG): Still my first resort for tracking variable values at different points. ☠️React Dev Tools: Essential for inspecting component state, props, and understanding the render cycle. 🤖Network Tab (Browser DevTools): My go-to for checking API request/response headers and payloads when backend calls fail silently. Every bug fixed is a concept truly learned. Embrace the errors; they're your best teachers. What's the most "facepalm" debugging moment you've had recently?😁 #Debugging #WebDevelopment #ReactJS #CodeWisdom #DeveloperLife

I spent 4 hours debugging a bug that didn't exist. The real problem was something I had completely ignored. Here's what happened 👇 I was working on my IGclone project. Integrating the frontend with the backend login API. Hit the login button. Got a 401. Checked the console → only saw: TypeError: async/sync mismatch No "wrong password." No "invalid credentials." Nothing useful. So I did what most beginners do. I started questioning my entire async/await logic. Rewrote the auth flow. Compared with old Stack Overflow answers. 4 hours gone. Nothing fixed. Then I opened Chrome DevTools → Network tab → clicked the /api/login call → went to Preview tab. It said: "message": "Wrong password" I had typed the wrong password. That's it. That was the entire bug. Here's what I actually learned that day: 1️⃣ Always send meaningful error messages from your backend 401 is just a number. The frontend needs context. Return "Wrong password" or "User not found" not just a status code. 2️⃣ Frontend must display those messages properly If the UI only shows a generic error, you're hiding the truth from the user and from yourself at 2AM. 3️⃣ Chrome DevTools Network tab is underrated Most beginners only check the Console. The real answer is usually in Network → Preview. You see exactly what the server returned. 4️⃣ Before rewriting logic check the actual data first The bug is rarely where you're looking. Check the API response before touching the code. One missing error message cost me half a day. Now every API I write returns a message field. No exceptions. If your backend stays silent when something goes wrong it's not done yet. still building, still learning. What’s the most ridiculous bug you’ve spent hours debugging? #WebDevelopment #JavaScript #BackendDevelopment #ReactJS #NodeJS #DebuggingTips #ChromeDevTools #100DaysOfCode #21DayChallenge #LearningInPublic

Ever wondered how Vite is so fast? I decided to find out by building it from scratch! I just finished a fun weekend project: Mini-Vite. ⚡ Instead of just using the tool, I wanted to understand the "magic" behind it. By building a custom dev server from the ground up, I dived deep into: ✅ Native ES Modules: Letting the browser handle the module graph. ✅ Import Rewriting: Intercepting requests to resolve node_modules. ✅ JSX on-the-fly: Transforming React code in real-time using Babel. ✅ Pre-bundling: Learning why we still need tools like esbuild for non-ESM packages. It’s one thing to run npm create vite@latest, but it’s a whole different level of fun to write the code that handles those imports! Huge shoutout to the community blogs and open-source creators for the inspiration. Onwards to the next deep dive! 🌍💻 https://lnkd.in/g4rie5by #WebDev #ReactJS #Vite #JavaScript #OpenSource #LearningByDoing #SoftwareEngineering #Frontend

React's useCallback — Most devs use it wrong. Explain when useCallback actually helps vs hurts performance. Show a before/after code example. Many devs wrap everything in useCallback thinking it's always better — it's not. "Have you ever over-optimized a React component? Share below 👇"

Today we explored Django — understanding its core concepts and going through the installation process. It’s powerful to see how quickly you can move from theory to actually setting up a framework that can build secure, scalable web applications. Every day, I’m reminded that growth in tech is about consistency, curiosity, and building step by step. Backend journey loading… #Django #WomenInTech #BackendDevelopment  #GIT20DayChallenge #AfricaAgility

Building UIs and mastering frameworks like React doesn't happen overnight. It’s the result of showing up daily, writing code, breaking things, and learning from the errors. I wrote this quick React snippet as a reminder that growth is just a setInterval running in the background. Whether you're debugging a tricky component or planning your next big project, consistency is the ultimate hook. Keep building. Trust the process. 🚀 #FrontendDevelopment #ReactJS #SoftwareEngineering #GrowthMindset #CodingJourney

For a long time I thought the path to becoming a better developer was simple: watch more tutorials. New framework tutorial. New crash course. New “build this in 30 minutes” video. But something strange kept happening… I wasn’t actually improving. Then I tried something different. Instead of opening YouTube, I started opening GitHub. I began studying how experienced Next.js developers structure their real production projects. And that changed everything. Reading real-world code teaches things tutorials rarely cover: • How large applications are organized • Why certain patterns are used • How experienced developers name functions and files • How problems are solved in production It’s slower than watching a tutorial… but far more powerful. Tutorials teach you how to follow instructions. Reading real code teaches you how to think like an engineer. If you're trying to grow as a developer, try this: Open a GitHub repo from a senior developer and study it line by line. You’ll learn more than you expect. #Nextjs #WebDevelopment #FrontendDev #ReactJS #OpenSource #BuildInPublic #DeveloperTips

The Node.js vs. Bun.js debate is officially over for me 🚀 I finally reached my breaking point with the "old way" of doing things. We’ve all been there: spending way too much time configuring tools instead of actually writing code. If you’re still wrestling with npm install taking a literal coffee break or managing three different packages just to run a TypeScript file, you're living in the past. Bun isn't just a faster runtime; it’s a total shift in the developer experience. Here is why I’m never looking back: Speed is an understatement: We’re talking about a runtime built from the ground up for performance. It’s snappy, it’s lean, and it makes Node feel like it’s running through mud 🏃♂️💨 The "All-in-One" Holy Grail: No more installing tsc or nodemon or dotenv. Bun just handles TypeScript, JSX, and environment variables natively. It’s the clean slate we’ve needed for years 🛠️ Install times that don't hurt: Using bun add feels like a cheat code. My terminal actually keeps up with my brain for once. Node had a legendary run and it built the web we use today, but the future is about removing friction. Modern development needs tools that stay out of the way and let us build fast. Bun is that future ⚡️ If you haven't made the switch yet, what's actually holding you back? 🧐 #SoftwareEngineering #WebDev #BunJS #FullStack #TypeScript #CodingLife #TechTrends

Deleting node_modules is a ritual, not a debugging strategy. In React Native, I used to fix “random” build errors like this: Clear cache. Delete lock file. Reinstall everything. Hope. Sometimes it worked. Most of the time, it just wasted hours. What changed things was understanding this: JS errors are descriptive. Native errors are honest. When a build fails, the real answer usually isn’t in your React code, it’s in the native build logs. Learning to read a native stack trace saves more time than another ‘npm install’. The native layer isn’t the enemy. It’s just less forgiving. #ReactNative #MobileDevelopment #Debugging #SoftwareEngineering

Most beginners think state management in React is complicated until they understand the difference between Redux and Redux Toolkit. Redux gives you full control over global state, but it comes with a lot of boilerplate actions, reducers, types, dispatch logic. Redux Toolkit simplifies everything. Less code, better structure, built-in best practices. Same power. Cleaner approach. If you're learning React, don’t just learn how to build components, learn how to manage scalable state properly. #ReactJS #Redux #ReduxToolkit #FrontendDevelopment