A reimagining of JSX from a React core alum

дата:
Plus React Compiler explained, a React-powered email editor, and Expo raises a Series B.

#​471 — April 24, 2026

Read on the Web
Together with  Meticulous
 React Status

A Guide to React Compiler Rendering — Redux maintainer Mark Erikson shares his slide deck from React Miami that starts with the fundamentals of React’s rendering process and moves on to optimization techniques, what React Compiler is, and demystifies what it does. It's a slide deck, but an educational one.

Mark Erikson

🏖️ React Miami is taking place now, but we'll link to the video once it's up.

Still Writing Tests Manually? Meticulous AI Is Here — Notion, Dropbox, Wiz and LaunchDarkly now use a testing paradigm they can’t work without. Built by former Palantir engineers, Meticulous automatically creates an evolving suite of E2E UI tests, delivering exhaustive coverage with no developer effort.

Meticulous sponsor

TSRX: A TypeScript Language Extension for Declarative UIs — “You can think of TSRX as a spiritual successor to JSX,” says former React team member Dominic. The language compiles to React, Preact, Solid and Ripple, and includes control flow, scoped styles, and locals. There’s a playground if you want to see how it compiles to React.

Dominic Gannaway

IN BRIEF:

😱 The Vercel Breach That Started with a Roblox Cheat — By way of an employee at a tool provider used by a Vercel employee, hackers got access to a subset of Vercel customers' environment variables. If you're a Vercel user and haven't looked into sensitive environment variables yet, now's the time.

Vercel

Building Non-Blocking UIs with useTransition and useActionState — How to build responsive UIs using useTransition and useActionState to manage async operation lifecycles cleanly.

Deepanshu Rana (Rubrik)

That Slow Dashboard? It's Not a React Problem — Continuous aggregates keep dashboards fresh without rebuilding rollups. Live data straight from Postgres. Try for free.

Tiger Data (creators of TimescaleDB) sponsor

📺 Next.js Vendor Lock-in No More – An interview with Jimmy Lai and Tim Neutkens of the Next.js project on how Adapters will simplify Next.js app deployment. Syntax FM Podcast

📄 Building the Maxima Therapy Website: React, GSAP, and Dabbling with AI – A design-oriented case study. The end result is intense but cute. Nicolas Garnier

📄 3 Ways to Store Variables in React & Why You Shouldn't Sleep on useRef Rachel Kaufman

📄 How Hipcamp Upgraded Expo SDK Versions with Claude Code Armaiz Adenwala (Hipcamp)

📺 Five Ways to SSR/RSC on TanStack Start – And in just ten minutes. Jack Herrington

🛠  Code, Tools & Libraries

React Arborist 3.5: A Tree View Component for React — If you want something like a sidebar you might see in VS Code, Finder, or Gmail, this provides everything in one component, including folders, drag and drop sorting, filtering, keyboard navigation, and more. Demos.

James Kerr

✉️ React Email 6.0: Now an Open-Source Email Editor Too — Starting life as a collection of unstyled components for creating good-looking emails using React and Tailwind, React Email now offers an extensible visual editor to add email creation to your app. There are also some new email templates ready to go.

Woznica, Miranda, Melo and Fernandes

React Tooltip 6.0: An Easy-to-Use Tooltip Component — There’s a getting started tutorial and an upgrade guide for existing users. GitHub repo.

ReactTooltip Team

Pastel 4.0: A Framework for Building Ink Apps — Ink brings the power of JSX and React components to building command line apps. Pastel provides more structure on top of that in a Next.js-esque fashion.

Vadim Demedes

📰 Classifieds

Gauntlet. A 10-week no-cost fellowship building the AI skills companies need. Learn to ship faster with AI. Land a $200K+ job. Apply now.

⚡Nimbalyst: Visual workspace for building with Claude Code & Codex. Integrate and manage sessions, tasks & files. Visually edit markdown, mockups, diagrams, code.

Join Sweef as Senior Fullstack Developer and help bring development in house, shaping how we build, ship and scale in Next.js and React.

📢  Elsewhere in the ecosystem
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