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Is it time to forget about useCallback & memo?
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Hey friend, This is one of the most exciting updates in the React ecosystem: the React Compiler βοΈ. I am incredibly excited because we can now use the Next.js 15 RC βοΈ with this compiler and eliminate many React hooks we've been using, such as useCallback, useMemo, memo, and more. If you prefer to watch the video instead, then check out my latest video here π How does React Compiler ACTUALLY work?
Our Weekly Snack: Is it time to forget useCallback or useMemo?First of all, why are we questioning this? Well, that's because React compiler is out. What is React Compiler?React Compiler is an automatic optimizer for React code. It analyzes your components and optimizes them for performance, reducing the need for manual memoization with hooks πͺ like These hooks are currently used to prevent unnecessary re-renders of components based on whether their props or state have truly changed. React Compiler will optimize your React code provided you follow the Rules of React βοΈ. Now, not using hooks inside a function, function should always return the same output etc. are all part of the rules. These are rules we're aware of. It can reduce the need for developers to manually add memoization code. For example, you may not need to add useCallback and useMemo everywhere as React is going to optimize that for you. Here is an example, How you can get Next.js 15 React Compiler for a new project:How can you enable React Compiler?There are 2 modes:
𧩠Opt-in mode: React Compiler can be enabled in annotation mode, which allows developers to control which components are optimized. This is seen in the left terminal. ⨠Compile all components: Setting it to true will get all components to get optimized. Is React Compiler a Silver Bullet?While React Compiler is a powerful tool, it's essential to remember:
Latest Frontend NewsFind out if people on Twitter π’ actually ship code or if they're just shiptalking with Ship Talkers βοΈ. βGPT skeleton βοΈ converts your components into Skeleton UI. You can simply copy paste. βBeautiful Gradients βοΈ ready to use for your projects or apps or to add a little whimsy to your apps. Add sounds to your application for user clicks or to have some fun, with the use-sound hook βοΈ. βAstro 4.10 is out βοΈ β¨ Changes include,
What if there was a Next.js form lib that does both client and server validation from one Zod schema, well, this is possible through conform βοΈ.β βTailwind released a new version βοΈ of `prettier-plugin-tailwindcss` β¨ that automatically cleans up unnecessary whitespace in your class lists
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Ankita Kulkarni
Join 9200+ subscribers reading by weekly personalized Newsletter that helps developers level up their skills through weekly Frontend and Leadership Snacks. You get a deep dive into a Tech topic, Actionable tips to excel in your career and a toolbox!
Hey Reader, Last week, I gave a talk at React Paris about Building your own AI minion, basically an AI Agent Toolkit for modern apps. I show my workflow and how I have automated a lot. The room was full, the energy was electric β‘, and it turned into one of my favourite talks Iβve given. You can π₯ watch the video here and the slides are here. πΏ Our Weekly Snack: Stop calling "redirect()" inside a try/catch block in Next.js Stop calling "redirect()" inside a try/catch block in Next.js π‘ Here's...
Hey Reader, This week, Next.js 16.2 gave AI agents something they never had "a browser". Your agent can now see your app, find the problem, and fix it without asking you. This along with GPT-5.4 mini & nano (2 small models), TanStack Start going 5x faster, why you should ban useEffect, and more. Let's dive in. πΏ Our Weekly Snack: Your AI agent can finally see what your users see (Next.js 16.2 is here) Next.js 16.2 dropped yesterday (deep dive here) and it just gave AI agents a browser. It's...
Hey Reader, Middleware got renamed to Proxy in Next.js 16. Same functionality. Better name. What is Proxy? Every request to your app has to go somewhere - a page, an API route, a file. Proxy gets to look at it first and decide what happens: send the user somewhere else, serve different content silently, or just let it through as-is. Think of it as a traffic controller π¦ sitting in front of your routes. So, why you should stop putting auth in Proxy? It feels like the perfect place but it...