Ujjwal Sharma’s Post

🚀 Introducing CodeSync (Beta) – A Real-Time Collaborative Code Editor I’m thrilled to share CodeSync (Beta) — a real-time collaborative code editor built for seamless teamwork, instant coding sessions, and live communication. No sign-up needed — just create a room and start coding together! 💻✨ 💡 Key Highlights: ⚡ Real-time collaboration for instant code sharing 🧠 Multi-language support – JavaScript, Python, Java, C++, Go, Rust, and more 🗨️ Built-in live chat with instant updates (Supabase Realtime) 🧩 Code execution powered by Supabase Edge Functions + Piston API 🚪 No authentication required – jump straight into coding 🛠️ Tech Stack: Frontend: React (TypeScript), Monaco Editor, Tailwind CSS, shadcn/ui, React Router Backend: Supabase (Realtime, Edge Functions, Chat synchronization) ⚙️ Core Implementation: ✏️ Editor.tsx → Monaco Editor for syntax highlighting & language support 💬 ChatPanel.tsx → Real-time chat powered by Supabase Channels 🧾 OutputPanel.tsx → Displays compiled output & runtime logs ⚙️ Edge Functions → Secure code execution layer via Piston API 🔧 Currently in Beta: I’m actively improving performance, adding more language support, and refining the user experience. Shoutout to Priyanshu Dubey for the awesome backend work! Couldn't have made this happen without you. 💪🔥 Would love to get your feedback and suggestions as CodeSync evolves! 💬 #React #TypeScript #Supabase #WebDevelopment #OpenSource #Collaboration #Coding #BetaLaunch

Promises, callbacks, async/await. These concepts felt like abstract buzzwords until my dashboard refused to load. 🤯 For months, I'd read tutorials, watched videos, and nodded along, *thinking* I grasped asynchronous JavaScript. The theory made sense. But the practical application? That was a different beast. Then came the project: a real-time data dashboard fed by multiple APIs. I built it with confidence. Until I hit 'refresh' and watched data points pop up erratically, some appearing minutes after others, others not at all. My API calls were executing out of order, dependent data was missing, and the whole thing was a chaotic mess. That excruciating debugging session, tracing the unpredictable flow of my data, was my true 'aha!' moment. It wasn't a neatly explained diagram or a perfect code example that solidified my understanding. It was the pain of a broken, non-loading app that truly showed me *why* asynchronous behavior exists, and *how* to properly manage it. Sometimes, the most profound lessons in development don't come from textbooks or polished courses. They come from the messy, frustrating, real-world problems that force you to dig deep and truly understand the underlying mechanics. Embrace the broken code; it's often your best teacher. What's a coding concept that only truly clicked for you after a painful real-world problem? Share your 'aha!' moment! #JavaScript #AsyncAwait #WebDevelopment #LearningToCode #Programming

Async / Await: async / await lets you write asynchronous code that looks synchronous. async function fetchUsers() {  try {   const res = await fetch("https://lnkd.in/gq8n7UnX");   const users = await res.json();   console.log("Users fetched:", users);   users.forEach(user => console.log(user.name, "-", user.email));  } catch (err) {   console.error("Error fetching users:", err);  } } fetchUsers(); console.log("This runs while fetchUsers waits for API"); Benefits: Cleaner, readable syntax Easier error handling Sequential logic without nested callbacks Using async JavaScript effectively helps create smoother, more responsive applications.

Promises help us handle async tasks like fetching data without blocking code execution. Here are 4 common Promise methods with simple examples 👇 --- 💡 1️⃣ Promise.all() Waits for all promises to finish — fails if any one fails. Promise.all([ Promise.resolve("A"), Promise.resolve("B") ]).then(result => console.log(result)); ✅ Output: ["A", "B"] --- 💡 2️⃣ Promise.any() Returns the first successful promise. Promise.any([ Promise.reject("Error"), Promise.resolve("Success") ]).then(result => console.log(result)); ✅ Output: "Success" --- 💡 3️⃣ Promise.race() Returns the first promise that finishes (success or fail). Promise.race([ Promise.resolve("Fast"), Promise.reject("Error") ]).then(result => console.log(result)); ✅ Output: "Fast" --- 💡 4️⃣ Promise.allSettled() Waits for all promises — returns both success and failure results. Promise.allSettled([ Promise.resolve("Done"), Promise.reject("Failed") ]).then(result => console.log(result)); ✅ Output: [ { status: "fulfilled", value: "Done" }, { status: "rejected", reason: "Failed" } ] --- ✨ Summary: 🟢 all() → Waits for all success 🟢 any() → First success 🟢 race() → First finished 🟢 allSettled() → Get all results #JavaScript #Promises #WebDevelopment #Async #Coding

🚀 REST vs GraphQL — The Ultimate Battle for Efficiency ⚔️ Your frontend just needs a name and avatar... but your REST API sends email, bio, address, posts, and followers too. That’s over-fetching — wasted bandwidth, slower responses, and messy payloads. Then came GraphQL — 🧠 One endpoint. 🎯 One query. ⚡ Only what you need. REST gives you resources. GraphQL gives you control. Both aim for the same goal — delivering data fast. But their philosophies couldn’t be more different. So here’s the real question 👇 If you were building an API today — Would you go for REST (simplicity & familiarity)? Or GraphQL (flexibility & precision)? #BackendDevelopment #GraphQL #REST #APIDesign #SoftwareEngineering #SystemDesign #WebDevelopment #Developers #Programming

🔥 TypeScript didn’t just reduce my bugs — it stopped me from coding on assumptions. Everyone says TS “adds types.” That’s the boring part. Here’s what actually changes you as a developer 👇 1. TypeScript exposes weak logic instantly JavaScript lets you be sloppy. TypeScript doesn’t. It forces you to face the questions you avoid: What if this returns null? What if the API shape changes? What if the input isn’t what you think it is? Most beginners call TS strict. It’s not strict — it’s brutally honest. 2. Unions + narrowing teach realistic thinking Real-world data is messy. string | null forces you to code for reality, not fantasy. Before: data.name.toUpperCase() ❌ After: data.name?.toUpperCase() ✓ This alone rewires how you handle edge cases. 3. Simple generics remove repetitive code You don’t need advanced generics. Even a basic <T> kills a huge chunk of boilerplate. Reusable logic becomes natural instead of forced. 4. Interfaces make the whole project predictable Once your data shapes are strict, everything changes: No more guessing props Refactoring becomes safe Your IDE becomes a second brain The codebase finally speaks one language If you're learning TS, master these first: unions narrowing interfaces basic generics These four alone put you ahead of most beginners. 💬 What TypeScript feature forced you to rethink your coding habits? Follow Lakshya Gupta for more #TypeScript #JavaScript #React #Frontend #Backend #WebDevelopment #CleanCode #SoftwareDevelopment #LearningEveryday

🟦 Day 176 of #200DaysOfCode Today’s focus was on merging objects in JavaScript using Object.assign() — a powerful and clean way to combine data structures efficiently. 🔧 What I built: A function that takes two objects (provided through user input), merges them into a single object, and returns the combined result. 🧠 Key Concepts Practiced • Dynamic object creation • Accepting user input • Merging objects with Object.assign() • Understanding how property overwrite works 🚀 Why merging objects matters? Merging or shallow-copying objects is extremely useful in real-world applications: ✅ Combining configuration settings ✅ Merging user profiles & updates ✅ Working with API responses ✅ State management (React/Redux workflow) 💡 Learning takeaway: Small utilities like Object.assign() simplify development. But more importantly — they deepen our understanding of how JavaScript handles references, immutability, and merging behavior. Master the basics. Build confidently. #JavaScript #176DaysOfCode #WebDevelopment #CodingChallenge #LearnInPublic #ProblemSolving #DeveloperMindset #LogicBuilding #ObjectOrientedProgramming

I just published a new article: "How I Built a Bulletproof Node.js API from Scratch with Test-Driven Development." Instead of just another tutorial, I wanted to document the real-world journey of using TDD to guide my application's architecture from the ground up. In the post, I break down the "Red-Green-Refactor" cycle with a practical, step-by-step example, showing how a single failing test can lead to a clean, decoupled, and professional code structure. I cover: The "Why" behind TDD (it's a design tool, not just a testing tool). Setting up a professional testing environment with Jest & Supertest. The "Aha!" moments that come from letting your tests guide your refactoring. If you're looking to build more confidence in your code and improve your design skills, I'd love for you to give it a read and share your thoughts. Read the full article here: https://lnkd.in/gZbUu62P #TDD #TestDrivenDevelopment #NodeJS #JavaScript #Jest #SoftwareEngineering #Backend #Developer #NewArticle #Tech

A Reactive October - Day 29: Mastering the Update! #30DaysOfCodingReact Today, I moved on to the "U" in CRUD: successfully implementing the update request for the database via the FastAPI backend! The Win: Connecting the useMutation hook for data modification is one thing, but getting the backend routing to correctly handle the PUT or PATCH request, especially with path parameters (like the ID of the item to update), was a crucial, sticky point. The Insight: Debugging and rectifying those backend routing issues provided hands-on experience that reading can't replicate. It transforms the role of a frontend developer into a truly full-stack experience, providing an understanding of the entire data flow from click to commit. Building stronger hands, indeed! Now the application can read, create, and update data dynamically. What's your most common pitfall when defining API routes? #ReactJS #FastAPI #useMutation #FullStack #Routing #30daysofcodingreact #CodeChallenge #DeveloperSkills

My Code 💀 is running on pure *ChatGPT*, **Google**, **Stack Overflow**, and a prayer. 🙏 Who else can relate to this precarious stack? --- ### The Developer's Real Stack We all know the truth behind that "perfect" deployment. Sometimes, the developer's journey looks more like a high-wire act balanced on the shoulders of giants (and a few anonymous YouTube heroes). 😂 It's the ultimate example of **leveraging resources** to build something amazing! --- ### Level Up Your Skill Stack (The Real Resources) To move from pure **Luck** to **Skill**, you need the right foundations. Stop balancing on old cans and start building your knowledge base. Here are some of the **BEST** places to learn and solidify your Web Development skills: * **Foundations & Quick Syntax:**   * **W3Schools.com** & **GeeksforGeeks**: Essential for lookups.   * **freeCodeCamp**: Comprehensive, project-based full-stack curriculum. * **Core Technologies & Deep Dives:**   * ➜ **React:** For building modern, dynamic UIs. (*Check out Udemy or Coursera for structured courses.*)   * ➜ **Node.js:** For building scalable, high-performance server-side apps.   * **NamasteDev.com** & **JavaScript Mastery**: Excellent for deep dives into JavaScript core. * **Advanced & Practice:**   * **GreatFrontEnd** & **Coding Ninjas**: Great for interview prep and advanced problem-solving. --- **What's the most unusual resource that saved your code this week?** Let me know in the comments! 👇 #webdevelopment #codinglife #developer #softwareengineer #programminghumor #javascript #react #node #tech