This Week In React #137: Code Extraction, Server Components, Signals, Forget compiler, Next.js, Astro, Deno, Remix, Preact, Signia, TypeScript...
7 min read
This week, there is still a lot of content about signals, but it's the turn of Server Components to take over the discussions!
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Miško (Qwik) explains the advantages of co-locating server/client code in the same file and the limitations of the current Next.js model (export extraction): you can only declare one
getServerSideProps function and you have to make use of
ReturnType to inject the right data type into the client component. Function extraction and closure extraction offer a better developer experience.
These techniques are not yet used in the React world today, but we can expect to see them appear in our frameworks soon. The Qwik team plans to decouple its code extraction from the framework. Tanner Linsley is collaborating with them and is already using this type of extraction on Bling, the toolkit that should power the upcoming TanStack Start framework.
I think we can also include React Server Components in the category of techniques that allow to seamlessly mix server/client code: we should rather consider this solution when discussing the current limits of Next.js.
React Server Components
After signals, it's the turn of Server Components to be in the spotlight this week. Dan Abramov triggered many discussions while looking for good mental models to explain the new feature. You'll have to dig into these discussions to find the analogies that speak to you the most.
🧵 Dan Abramov - "I need to start collecting ways to pitch react server components"
🧵 Dan Abramov - "Ask me anything about React Server Components"
🧵 Rick Hanlon - "they move your container components to the server"
🧵 Andrew Clark on framework-agnostic vs well-integrated tools
🐦 Ben Holmes - "React Server Components and Astro are like... the same thing"
🐦 Daishi Kato - "This is how I put RSCs inside client components"
🎥 React Server Components with Dan Abramov, Joe Savona, and Kent C. Dodds: live discussion starting very soon, should be very interesting.
Server Components could also have unsuspected benefits: a communication layer for Electron threads or a flexible data-layer for static site generators.
📜 React vs Signals: 10 Years Later: Don't miss Dan Abramov's answer on this article by Ryan Carniato. Dan does not want the function of a React component to be "setup" like SolidJS: re-running the function is voluntary.
📜 React’s Upcoming Compiler Only Solves Part Of The Problem: explains why the React Forget compiler will not resolve intermediate re-renders, unlike signals.
📜 Were React Hooks a Mistake?: Jake explains the problems introduced by hooks, and how signals are quite similar to React class components.
📜 Framework-defined infrastructure: Vercel's CTO explains how the infra automatically adapts to your code and uses Next.js as an example.
📜 2023 Web Framework Performance Report: Fred (Astro) analyzed real-world perf data to derive trends on how frameworks influence the performance of our apps. We find performance scores for Astro, Gatsby, Remix and Next.js.
📜 Deno - You Don't Need a Build Step: explains the complexity behind the 4 build steps of Next.js (compiling, minifying, bundling, code splitting). Proposes an alternative with Fresh and its Just-In-Time mode.
📜 Common Beginner Mistakes with React: great interactive article by Josh Comeau, for beginners.
📜 Wishlist for a React Compiler: Michael explains what he would like the React-Forget compiler to do, illustrated with many before/after compilation examples.
📜 Sentry’s Frontend Tests: Migrating from Enzyme to React Testing Library
📦 preact-reconcilers: a package to create custom Preact renderers. Cody is able to run React-Three-Fiber + Preact.
📦 Remix 1.14: Hot Module Replacement + Hot Data Revalidation.
📦 Signia - Scalable signals for TypeScript: new signal lib with React binding.
📦 Remix + Fastly support: new server adapter for Remix
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👀 Code elimination for React Native apps demo: upcoming Expo CLI feature to tell you which native code your app does not use and can be safely removed.
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Tether elements to each other with CSS anchor positioning: CSS draft feature that could replace positioning libs like Popper, Floating-UI or Tether.
🤣 Other funny tweets this week
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