shadcn's next thing: UI SDK

#​497 — November 13, 2026

Read on the Web

Declarative Dragging — Rather than designing drag and drop interactions as needed, what if you could declare the possible outcomes and let a library work out the interaction? Dragology is an experimental React library for SVG interfaces that does just that. There are lots of demos to try.

Horowitz, Blinn, and Heer

Debug Errors and Agents Faster: Sentry Changelog Live — A walkthrough of what’s new for debugging errors and performance issues, including fixing production bugs with Seer and tracing the agents you build. Live Q&A. Nov 18, 10am PT. Save your spot.

Sentry sponsor

📊 e18e's Ongoing Benchmarks for JavaScript Meta-Frameworks — e18e is now benchmarking meta-frameworks like Next.js, Nuxt, and Astro on everything from install and build costs to SSR throughput, alongside Core Web Vitals data. Built with input from maintainers, the results can be tracked release by release and have already led to fixes in Nuxt, React, and Solid.

e18e Project

IN BRIEF:

• ⚠️ Using Vite? A critical flaw allows remote code execution on dev servers exposed to the network with --host or server.host. Update to 8.3.7, 8.2.5, 8.1.7, 7.3.8 or 6.4.6.

• Storybook 11 beta now has an official post. React projects get faster, more accurate component metadata, and there are type-safe stories and official skills for agents. The final release is due in December.

• React's <form> docs now explain how to keep field values after an Action, and requestFormReset gets a reference page of its own.

UI SDK: Vercel and shadcn's Headless UI Behaviors Library — A low-level library of behaviors, like keyboard navigation, popups, drag and drop, that you compose into your own components. A core idea is to give a solid base for agents to build full components from. In beta, but you can get started now.

shadcn (Vercel)

How X is Rebuilding Its Web App with React, Relay and Vite — X/Twitter is replacing its decade-old client-rendered React app with a stack built around streaming SSR and Suspense. Lab tests show profiles displaying posts much sooner, and the hydration and chunking fixes make this an interesting case study.

Yagiz Nizipli (X)

📊 Six React Chart Libraries vs Hand-Written SVG – The results are close at native speed but with large gaps under CPU throttling or with large datasets. Pavel Gusev

📊 Remix v3 vs TanStack Start: Fast Pages, Thin Ecosystem – Comparing the same site built in React-free Remix v3 and TanStack Start. Jonathan Arnault (Marmelab)

📱 How Five Web Developers Built an iOS Keyboard Extension with Expo Anirudh Coontoor (Supernova)

🛠  Code, Tools & Libraries

Text.js: React Apps That Render in the DevTools Console — Continuing the trend of rendering React apps everywhere, this new framework heads to DevTools as a host environment, supporting App Router-style routing, Suspense, keyboard input and ASCII fonts. Open the console on the page to see it in action!

Anomaly

Exact: A New Rust-Powered App Framework from Expo's Co-Founder — It isn't React as the UI is written in a small, constrained language called Contract that's designed specifically for agents to write and test, but 𝕏 Andrew Clark says it's "eerily similar" to what he thinks React 20 is shaping up to be.

Charlie Cheever

React Shepherd 8.0: Guided Tours for Apps, Now with a Leaner Engine — The React wrapper (React docs here) for Shepherd, a popular library for building step-based on-page tours. Note that it's AGPL, with a paid license for commercial use.

Ship Shape

• EmbedPDF 3.0 – Powerful PDF viewer with a drop-in React component and a headless library for adding your own UI. (Demo.)

• react-virtualized 10.0 – The original list and grid virtualization library, modernized. Now in TypeScript, built on function components, and requires React 18+.

• 📱 React Native Audio API 1.0 – Software Mansion's Web Audio API for React Native goes stable. Adds spatial audio, and FFmpeg is now opt-in.

• Mantine 9.8 – Adds an emoji picker package, plus new Diff, PhoneInput and week and quarter picker components.

• BagUI – A shadcn/ui registry of blocks and templates for SaaS landing pages, like pricing and hero sections.

📢  Elsewhere in the ecosystem

• Vectoys is a set of React components that render phones, laptops and other small 3D objects as SVG, with interactive HTML inside their screens. Could be handy for mockups or 'in-situ' teasers on your homepage.

• 🤖 Chrome's Modern Web Guidance 1.0 is a set of skills that steer coding agents toward modern, Baseline-aware HTML and CSS. The team has also listed the 'top 10 things AI gets wrong' when building for the Web.

• Need a clip of a component or animation for a PR or README? Paul Irish's chrome-capture tool can record a Chrome tab to an MP4 at 60fps with a single npx command.

• 📊 The State of JavaScript 2026 survey is now open if you want to get involved.