A React optimization case study from GitHub

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Plus React Native 0.85, React 19.2.5, a primer to TanStack Start, and how MDN switched out React for Lit and web components.

#​469 — April 10, 2026

Read on the Web

🐣 We're back after a little Easter break, so we have two weeks of updates to catch up on – hold on tight! 😅
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Peter Cooper, your editor
Together with  Frontend Masters logo
 React Status

The Uphill Climb of Making Diff Lines Performant on GitHub — A practical breakdown of how GitHub’s team cut memory usage and interaction latency in their new React-powered PR diff view. If you’re intrigued by how component tree depth, event handler sprawl, and useEffect overuse can eat away at your app’s performance, this is useful reading.

Ghenco and Shwert (GitHub)

Free Workshop: Claude Code Deep Dive — April 21 — Lydia Hallie from Anthropic teaches a full-day Claude Code workshop at Frontend Masters on April 21. Free to attend. No subscription required.

Frontend Masters sponsor

Ink 7.0: Use React to Build TUIs and Command Line Apps — A great example of ‘right place, right time’, Ink now powers tons of apps, especially in the agentic AI ecosystem. v7.0 now leans on React 19.2, uses useEffectEvent internally for added efficiency, and brings many new hooks and settings.

Vadim Demedes

IN BRIEF:

▶  TanStack Start: A Client-First Web Framework — A 30 minute talk from TanStack’s founder showcasing TanStack Start’s value proposition for both React and Solid developers looking for a complete SSR framework.

Tanner Linsley

Under the Hood of MDN's New Frontend — MDN remains one of the most useful resources for frontend developers and it has a new frontend. This case study digs deep into how they replaced an ejected Create React App based app with one driven by Lit-based web components.

Leo McArdle (MDN)

Sentry - A Guide To Fixing Slow Checkout Flows In React Native — Find slow checkout requests, fix them, and set up alerts before users notice. Step-by-step guide.

Sentry sponsor

📄 Signals: The Push-Pull Based Algorithm – A ground-up explanation of how signals work, as seen at the core of reactivity in Solid, Vue, Preact, and Angular. A handy intro to compare against React. Willy Brauner

📄 Moving Railway's Frontend Off Next.js – Another Next.js to Vite + TanStack Router migration. Victor Ramirez

🛠  Code, Tools & Libraries

🎨 React Color: Flexible Color Picker Components — There’s a wide array of options here for all sorts of freeform or curated color selection. GitHub repo.

uiw and contributors

Boneyard: Auto-Generated Skeleton Screens for Your UI — Snapshots your real UI and captures a flat list of skeleton ‘bones’ which are positioned, sized rectangles that mirror the page exactly. Also supports Vue, Svelte, and Angular.

0xGF

Docusaurus 3.10: The React-Powered Site Builder — The popular MDX-powered site generator lands its final 3.x release with a focus on helping you prepare for Docusaurus 4 by opting into future settings and the faster, and now stable, Docusaurus Faster build tooling. This showcase shows off the potential of the long-standing framework.

Sébastien Lorber / Meta

📰 Classifieds

Flaky tests slowing down dev? Meticulous gives engineers confidence to ship faster by autonomously testing every edge case of your web app.

Seat-limited org plans are live in Clerk Billing. Set size caps per tier, enforce automatically.

Build apps with real-time search data from Google, Maps, Shopping, and more.

📢  Elsewhere in the ecosystem
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