Stas Kyaune’s Post

Most developers use fetch without ever canceling it. That means: stale responses overwriting fresh ones, memory leaks in unmounted components, and race conditions that are hell to debug. AbortController fixes all of this — and it's been native since ES2017. Two main use cases: 1. Cancel on component unmount — so old requests don't update state after a user navigated away. 2. Cancel on new request — so if a user types fast in a search field, only the last request wins. No library needed. Do you use AbortController in your projects? 👇 #JavaScript #WebDevelopment #Frontend #JS #SoftwareEngineering

HOT TAKE: "Next.js 15's server components? A love letter to full-stack devs or just a happy accident. Let’s break it down." Remember when client-side rendering was the go-to? Flashbacks of complex hydration issues, anyone? Enter Next.js 15, promising to make server components the new norm. Before you throw out that client-side hat, think about the trade-offs. Server components might make hydration a breeze, but what about interactivity? Not to mention, vibe coding just got a boost—sketch out an idea server-side, and boom, ready to go. But is it a game-changer or just hype? I'm curious: How are you tackling these changes in your projects? #WebDevelopment #TypeScript #Frontend #JavaScript

💡 Today I learned something that changed how I think about performance in React… I was working on a simple search input, and everything seemed fine… until I realized something Every single keystroke was triggering an API call That means: 👉 Too many requests 👉 Unnecessary load on the server 👉 A less smooth user experience That’s when I remembered 𝗱𝗲𝗯𝗼𝘂𝗻𝗰𝗶𝗻𝗴 Instead of calling the API on every key press, I added a small delay. Now, the function only runs when the user stops typing for a moment ✨ The result? Fewer API calls Better performance Cleaner and more efficient code Sometimes, it’s not about big changes… but small improvements that make a real difference Have you ever faced this kind of issue? 👇 #React #WebDevelopment #JavaScript #Frontend #Performance #LearningJourney

Today (April 1, 2026) the team behind Vite announced an update regarding their vite-plus repository. They have made the repository private. According to their post, the source code will now be distributed exclusively through production sourcemaps. However, they clearly mentioned that this change does not affect their commitment to open source. Vite is widely used by developers to build modern web applications quickly and efficiently. The team behind it (VoidZero) continues to play an important role in the JavaScript ecosystem. This update has caught the attention of many in the developer community. What are your thoughts on this change? #Vite #JavaScript #WebDevelopment #OpenSource #Frontend

SSR vs RSC Think of online shopping: **SSR 🛒** You open a product page and get the fully prepared page from the server—but your browser still loads a lot of JavaScript to make it interactive. **RSC 📦** Only the necessary parts are sent to your browser, while heavy work stays on the server—making everything faster and lighter. 👉 SSR = full page, more JS 👉 RSC = less JS, smarter delivery #React #WebDevelopment #Frontend #JavaScript #NextJS #SoftwareEngineering #Programming #WebPerformance #TechExplained

Unpopular opinion 👇 You probably don’t need Redux anymore.😅 With modern React: • Context API + useReducer • Server state libraries (like React Query) • Better component design Most apps can scale without heavy global state tools. But here’s the catch: 👉 The real problem isn’t the tool—it’s how we structure state. Good engineers don’t ask: “Which library should I use?” They ask: “Where should this state live?” What’s your take—Redux still essential or overused? #React #JavaScript #Frontend #SoftwareArchitecture #Thoughts

Understanding the React Component Lifecycle 🌿⚛️ Every React component goes through three key phases: 🟢 Mount – when the component is created and added to the DOM 🔵 Update – when state or props change, triggering re-renders 🟣 Unmount – when the component is removed from the DOM With modern React, the useEffect hook ties it all together: Runs after mount (initial render) Runs after updates (when dependencies change) Can clean up on unmount (return function) useEffect(() => { // side effect here return () => { // cleanup on unmount }; }, []); Mastering this flow helps you manage side effects like API calls, subscriptions, and timers cleanly and predictably. #React #WebDevelopment #Frontend #JavaScript #ReactJS #Coding

State management is where most frontend apps start getting messy. It’s not about choosing a library — it’s about choosing the right type of state. I’ve seen teams overcomplicate things by: Using Redux for everything Mixing API data with UI state Making simple flows hard to debug So here’s a better way 👇 🔹 Part 2: State Management (Redux vs Context vs Server State) Local state → keep it simple Global state → structure it well Server state → handle it separately Read here 👇 https://lnkd.in/gsTrJDHR Next: Folder Structure (Feature vs Layer — what actually scales) #frontend #reactjs #systemdesign #webdevelopment #javascript

react 19 has a new use() api and it breaks one of the oldest rules in react hooks must be called at the top level. always. no conditions, no loops. use() doesn't care. you can call it inside if statements, loops, conditionals - things that were never allowed before. it does two things: - reads a promise (integrates with suspense automatically) - reads context (like useContext, but more flexible) function UserCard({ userPromise }) { const user = use(userPromise); // suspends until resolved return <p>{user.name}</p>; } the catch? create your promises in server components and pass them down - not inside the client component itself, or you'll get an infinite loop on every re-render. it's a small api with a big mental shift. react is clearly moving toward a world where async is first-class - not something you bolt on with useEffect + useState + loading flags. #react #react19 #frontend #javascript #webdev

Built multiple projects with React, and one thing I’ve realized is performance isn’t just about code — it’s about the right tools. React gives flexibility with components, hooks, and rendering control. But when it comes to production-level optimization, Next.js adds that extra edge with SSR, SSG, routing, and built-in optimizations. Understanding where to use what makes the real difference 🚀 #React #NextJS #WebDevelopment #Frontend #Performance #JavaScript