Sonu Jha’s Post

🚨 Most React performance issues are self-inflicted. Not because React is slow. But because we don’t realize how often our code runs. I learned this the hard way. Everything looked fine in development. But with real data → UI started lagging. No errors. No warnings. Just poor experience. 🔍 The issue? Unnecessary re-renders + recalculations happening on every render. 💡 Fix wasn’t complex: → Memoizing expensive calculations → Stabilizing function references → Avoiding derived state where possible ⚡ Result: Smooth UI. Better performance. Happier users. 🧠 Biggest shift for me: I stopped asking “Is my code correct?” and started asking 👉 “How many times is my code running?” That question alone changes how you write React. What’s one performance issue you’ve faced recently? #ReactJS #FrontendDeveloper #WebPerformance #JavaScript #TypeScript #SoftwareEngineering #Coding

🚀 Starting a 10-part series on React things that make code harder than it needs to be. Not tutorials. Not “10 hooks you should know.” Just real patterns that show up in actual codebases and make simple work more annoying than it should be. Part 1: A lot of React problems are really state problems. Not React itself. Not JSX. Not even hooks most of the time. State living in too many places. Duplicated state. State doing jobs it was never supposed to do. That’s usually when an app starts feeling harder to reason about than it should. The more I work with React, the more I think good frontend code starts with good state decisions. If the state is messy, everything downstream gets harder: debugging feature work testing handoffs even basic collaboration Good React usually feels predictable. And predictable usually starts with state. What’s the most common state mistake you keep seeing? #React #ReactJS #StateManagement #FrontendEngineering #JavaScript #TypeScript #SoftwareEngineering

🚀 Day 23/30 – React Best Practices Most React developers don’t struggle with syntax… 👉 They struggle with writing maintainable code 👀 Today I focused on what actually makes code production-ready ⚡ 💡 What I realized: Clean code is not about making things “look good” 👉 It’s about making code easy to understand, scale, and debug 💻 Practices I’m following: ✅ Keep components small & focused → One component = one responsibility ✅ Use meaningful names → Code should explain itself (no comments needed) ✅ Avoid prop drilling → Use Context when data goes deep ✅ Reuse logic with custom hooks → Don’t repeat yourself ✅ Separate business logic from UI → Components should focus on rendering ✅ Handle loading & errors properly → Real apps are not always “happy path” 🔥 Reality Check: 👉 Messy code works… until it doesn’t 👉 Clean code scales… messy code breaks ⚡ Advanced Insight: Senior developers don’t write “clever” code 👉 They write predictable, readable code 🔥 Key Takeaway: Anyone can write code that runs 👉 Not everyone writes code that lasts Be honest 👇 Would another developer understand your code in 30 seconds? 👀 #React #CleanCode #FrontendDevelopment #JavaScript #BestPractices

React isn’t just a library—it’s a mindset. From breaking down complex UIs into reusable components to managing state with precision, React teaches you how to think in systems, not just screens. What looks like simple code on the surface is actually layers of logic, structure, and scalability working together behind the scenes. Just like any powerful tool, the real value of React isn’t in writing code—it’s in how you architect experiences. Build components. Think in flows. Design for scale. #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #SoftwareEngineering

🚀 React Best Practices: Writing Clean & Scalable Code Writing React code is easy… But writing clean, maintainable, and scalable React code is what makes a real difference 👇 In this post, I’ve covered some powerful React design patterns: 🧩 Container vs Presentational Pattern → Separate business logic from UI for better structure 🔁 Custom Hooks Pattern → Reuse logic across components instead of duplicating code 🧱 Compound Components Pattern → Build flexible and reusable component APIs 🎯 Controlled Components → Manage form state predictably and efficiently ⚡Higher-Order Components (HOC) → Reuse behavior across multiple components 💡 Why it matters? ✔ Cleaner codebase ✔ Better scalability ✔ Easier debugging & testing ✔ Production-ready architecture 🔥 Whether you’re building small apps or large-scale products, these patterns help you write professional React code 💬 Which pattern do you use the most in your projects? #React #Frontend #WebDevelopment #JavaScript #Coding #SoftwareEngineering

🚀 Building with React: Lessons from Real Projects. Working with React has taught me that building modern applications is not just about designing interfaces it’s about managing data flow, scalability, and performance. Through hands-on experience with React, Redux, and API integration, I’ve learned the importance of: ✔ Creating reusable and modular components ✔ Managing application state efficiently with Redux ✔ Handling API calls and asynchronous data effectively ✔ Maintaining clean and scalable project structures These practices not only improve the performance of an application but also make it easier for teams to collaborate and maintain the codebase. Frontend development continues to evolve rapidly, and it’s exciting to keep learning and building solutions that create real impact. #ReactJS #Redux #FrontendDevelopment #JavaScript #SoftwareEngineering

🚀 Stop Managing State Manually — Let React Do the Heavy Lifting For a long time in React (especially React 17/18), handling form submissions meant writing extra logic: managing loading state, preventing default behavior, handling async calls manually… and repeating this pattern again and again. It worked — but it wasn’t elegant. Now with React 19, things are changing in a powerful way. ✨ With hooks like useActionState, React introduces a more declarative and streamlined approach: No more manual loading state management No need for repetitive event handling Cleaner and more readable components Built-in handling of async actions Instead of telling React how to handle everything step-by-step, we now focus on what we want — and let React take care of the rest. 👉 This shift is not just about writing less code. It’s about writing better code. Code that is: ✔ Easier to maintain ✔ Less error-prone ✔ More scalable ✔ More aligned with modern frontend architecture As developers, growth comes from unlearning old patterns and embracing better ones. 💡 The real question is: Are we just writing code that works… or are we writing code that evolves? #React19 #FrontendDevelopment #JavaScript #WebDevelopment #CleanCode #CodingJourney #SoftwareEngineering

I just learned something small in TypeScript today… but it completely changed how I think about handling user state in React Instead of guessing if a user exists or not, I used a proper type: • AuthUser | null That one line made everything safer and cleaner. • No more “undefined errors” flying around. • No more messy checks. • Just clear, predictable state. I built a simple login/logout flow where: • The user is either an object (logged in) • Or null (logged out) And with optional chaining (user?.name), my UI stays smooth without breaking. It may look basic… but this is how solid frontend systems are built one correct type at a time. TypeScript is slowly turning my “it works” code into “it’s reliable” code If you’re learning React + TypeScript, don’t skip this pattern. It’s a game changer. I’m currently deep in my TypeScript journey, sharing what I learn as I grow. Let’s connect 🤝 #typescript #reactjs #frontenddeveloper #webdevelopment #codingjourney #javascript #techinpublic #buildinpublic #devcommunity

🚨 90% of React developers use Hooks daily... Very few truly understand when to use which one. Hooks are powerful—but misusing them leads to unnecessary re-renders, performance issues, and hard-to-maintain components. The difference between average and strong React developers is not syntax—it’s 𝗱𝗲𝗰𝗶𝘀𝗶𝗼𝗻-𝗺𝗮𝗸𝗶𝗻𝗴.  👇 Here’s a simplified mental model I follow: ⚡ `𝘂𝘀𝗲𝗦𝘁𝗮𝘁𝗲` → local state management ⚡ `𝘂𝘀𝗲𝗘𝗳𝗳𝗲𝗰𝘁` → side effects (API calls, subscriptions) ⚡ `𝘂𝘀𝗲𝗥𝗲𝗳` → persistent values without re-render ⚡ `𝘂𝘀𝗲𝗠𝗲𝗺𝗼` → optimize expensive calculations ⚡ `𝘂𝘀𝗲𝗖𝗮𝗹𝗹𝗯𝗮𝗰𝗸` → stabilize function references ⚡ `𝘂𝘀𝗲𝗖𝗼𝗻𝘁𝗲𝘅𝘁` → share global state ⚡ `𝘂𝘀𝗲𝗥𝗲𝗱𝘂𝗰𝗲𝗿` → manage complex state logic ⚡ `𝘂𝘀𝗲𝗟𝗮𝘆𝗼𝘂𝘁𝗘𝗳𝗳𝗲𝗰𝘁` → run before paint (use carefully) ⚡ `𝘂𝘀𝗲𝗧𝗿𝗮𝗻𝘀𝗶𝘁𝗶𝗼𝗻` / `𝘂𝘀𝗲𝗗𝗲𝗳𝗲𝗿𝗿𝗲𝗱𝗩𝗮𝗹𝘂𝗲` → keep UI responsive under load Most performance issues come from overusing hooks—not understanding them.  👇 Practical rules I apply: * Don’t use `useMemo` or `useCallback` unless there’s a measurable need * Keep `useEffect` clean and avoid unnecessary dependencies * Prefer simple state (`useState`) before reaching for complex patterns Hooks are not shortcuts—they’re tools. Used correctly, they make your UI fast and predictable.  Save this before you miss out.  This cheat sheet can save you hundreds of hours. ⏳ Which hook do you think is most misunderstood in real-world projects? #ReactJS #ReactNative #FrontendEngineering #WebPerformance #JavaScript #CleanCode #SoftwareEngineering #UIEngineering