Handling Async Errors in Production

🚀 Small symbols in `package.json`… BIG impact. Ever noticed `^` and `~` in your dependencies? 📦 Example: "react": "^18.2.0" 🔼 `^` (Caret) ✔️ Allows minor + patch updates ❌ Blocks breaking changes 👉 Flexible, but can introduce unexpected bugs 📉 `~` (Tilde) ✔️ Allows only patch updates 👉 More stable and predictable 💡 Simple rule: * `^` = Faster updates 🚀 * `~` = Safer updates 🛡️ ⚠️ One symbol can decide whether your app stays stable… or suddenly breaks. #javascript #reactjs #webdevelopment #programming #developers

Have you ever felt frustrated when your promises didn't quite deliver as expected? I've been there too, especially when working with junior teams on complex projects. One common pain point is dealing with multiple promises that may or may not resolve successfully. In such cases, using Promise allSettled can be a game-changer. For instance, imagine you're building a feature that relies on data from multiple APIs - some of which may fail or timeout. Promise allSettled allows you to handle both fulfilled and rejected promises, ensuring your app remains stable. As a rule of thumb, use Promise all when all promises must succeed, but opt for Promise allSettled when you need to handle mixed outcomes. A hidden pitfall for juniors is forgetting to check the status of each promise in the resulting array. Don't get caught off guard - take control of your promises today! ⚡️💡🔓 #programming #webdev #javascript

React feels fast because it usually updates only what changed. That is reconciliation. When state changes, React creates a new Virtual DOM tree, compares it with the previous one, finds the difference, and updates only the affected part of the real DOM. That is the reason React apps can stay efficient without you manually touching every DOM node. The infographic shows the full flow step by step, from state change to browser repaint. What React concept should I simplify next? #React #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #VirtualDOM #Programming #SoftwareEngineering 

Just published a new blog post on Managing Component State with React It shows you how to use the useState Hook to handle state in functional components and make UIs that change and respond to user input. I've also added simple code examples to help you understand how state works in real-world React apps. If you're learning React, this is a must-know concept! 👉 Read more: https://lnkd.in/gcCEDNah #ReactJS #JavaScript #WebDevelopment #Frontend #Programming #SoftwareEngineering

A React component is a function which returns JSX. When you use that component inside another component, the React creates an element. <Ali /> refers to element of Ali component. So, when React sees <Ali /> it gets it's JSX and internally call React.createElement with details of Ali component such as props, key and children. React.createElement creates an object which is basically description of what needs to be rendered. Then React adds that to the virtual DOM and gets added to real DOM. Tried my best to simplify this concept. Thinking of writing a blog on it. You can subscribe to my newsletter to read in-depth. link in comment. #react #javascript #frontend #programming

Most React developers ignore this until their app starts crashing randomly. I recently debugged a frontend issue that didn’t show up in logs, didn’t throw errors… but quietly killed performance over time. Turned out — it was a memory leak in useEffect. Here’s the exact bug (and fix) #React #Frontend #JavaScript #WebDevelopment #MemoryLeaks #Coding #SoftwareEngineering #DevCommunity #CleanCode #Programming

𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭 𝐑𝐞𝐚𝐥𝐢𝐭𝐲 𝐢𝐧 𝐎𝐧𝐞 𝐏𝐢𝐜𝐭𝐮𝐫𝐞 😂 Your app might be just a few KB… but node_modules be like 12GB 😅 That’s the beauty (and pain) of modern development — powerful tools come with heavy dependencies. 👉 Optimize where you can, but embrace the ecosystem. #JavaScript #NodeJS #WebDevelopment #CodingLife #Developers #TechHumor #Frontend #Backend #Programming #DevLife

This is a good reminder to keep dependencies clean, avoid unnecessary packages, and understand what we install instead of blindly running npm install.

🚨 Circular Dependency in NestJS: The Silent Architecture Killer ❌ Nest can't resolve dependencies of the XService (?). Please make sure that the argument YService is available in the current context. It compiles fine… but at runtime it breaks your app with unresolved dependencies, exposing hidden coupling in your design. It’s not just a NestJS issue — it’s a sign your services are too tightly connected and need better separation of concerns. #NestJS #NodeJS #BackendDevelopment #SystemDesign #SoftwareArchitecture #CleanCode #TypeScript #Microservices #WebDevelopment #Programming #Developers

⚛️ useEffect is simple… until it breaks your app 💀 Most React devs think they understand useEffect… But misuse it → and your app turns into a bug factory 😵💫 Here’s what you really need to know 👇 ⚡ useEffect = Side effects handler (API calls, timers, DOM updates) ⚡ No dependency array? Runs on EVERY render → performance killer 🚨 ⚡ Empty dependency array [] Runs only once (on mount) — perfect for API calls 🔥 ⚡ Dependency-based execution Runs when values change → controlled updates 🎯 ⚡ Cleanup function = underrated hero Prevents memory leaks & unwanted behavior 🧹 ❌ Beginner: “useEffect works somehow” ✅ Pro: “I control when & why it runs” 💬 React isn’t hard… Understanding lifecycle is the real game 📌 Save this before your next React project #ReactJS #useEffect #Frontend #WebDevelopment #JavaScript #Coding #Developers #Programming