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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:
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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, I had the incredible opportunity to speak at the official Next.js Conf!. Itβs been 2.5 years since I went full-time as a Tech Educator, and this moment truly feels like a milestone. In my talk, I share how I built a custom course platform using Next.js (the same one that powers Modern Full Stack Next.js Course) along with the lessons and challenges I faced along the way. If you'd like, you can watch the talk here! Weekly Snack: Caching Patterns for Dynamic Components in Next.js πΏ...
Hey Reader, Iβve been diving deep into React 19.2 and Next.js 16 Beta this week, and honestly, itβs such a solid update. I have started to incorporate so many of the features in my Next.js Custom Course Platform and have seen massive improvements. But before we jump into this weekβs snack, letβs hear it from our sponsor. π But before that, let's hear it from our Sponsor. PRESENTED BY CODERABBIT AI Most AI test tools just throw random assertions at your code and call it βcoverage.β But they...
Hey Reader, This week was huge for web dev π. React 19.2 just landed with fixes for some of the most annoying bugs, Sonnet 4.5 dropped with major AI upgrades, and the ecosystem feels like itβs moving faster than ever. Iβve rounded up the highlights (and why they matter) along with this weekβs Snack for you below π But before that, let's hear it from our Sponsor. PRESENTED BY CODERABBIT AI Most AI code reviewers feel shallow, they look at syntax, patterns, maybe a guideline or two, but they...