America's NextJS Top Model

Today’s issue: React libraries at rest stops in Missouri, AI-powered UIs at Waffle House, and a mai tai in Iowa.

Welcome to #409.

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America’s NextJS Top Model

The Triangle Gods blessed us with Next.js 15.4 on Monday, and it comes with two riveting updates:

1. 100% integration test compatibility for next build --turbopack
2. “Stability improvements”

OK, not exactly earth-shattering stuff here – although it is nice to see that we are finally turbo yet and will soon get to see if the new build times live up to the hype.

But Vercel understands developer propaganda marketing better than anyone, so they padded this release with previews of the real party coming in Next.js 16 later this summer.

These are still experimental for now, but you can manually opt in if you want to take a walk on the wild side:

• Cache Components (beta) – This consolidates multiple experimental caching features like Dynamic IO, use cache, and Partial Prerendering into one cacheComponents flag, which should help simplify performance optimization.

• Optimized client-side routing – Improves App Router navigation with smarter prefetching and cache invalidation strategies for faster and more responsive navigation.

• devtoolSegmentExplorer – This is officially the first devtool for Next.js 👏. It lets you view and switch between route segments quickly and also trigger not found, loading, and error states, so you don’t have to manually trigger them in your code.

Bottom Line: Normally, I’d recommend you cautiously and responsibly test out these experimental features and wait for their stable release.

But Leerob told me that his final wish as a Vercel employee was for everyone to yolo all of these new Next.js 16 features into their apps ASAP – because if/when the crap hits the fan, he’ll be sipping mai tais somewhere on the beaches of Iowa where none of you can find him.

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1. Hashbrown just released v0.2 of its framework for building AI-powered UIs in Angular and React. It now comes with a stable JS runtime and more ergonomic tool-calling APIs to help make your app “smothered, covered, and ready to consume” – before you pass out drunk at a Waffle House at 2:00 am.

2. Leerob wrote about 5 things he learned from 5 years at Vercel. Shoutout to the 🐐.

3. Convex just launched a Resend Component that lets you easily integrate Resend’s DX-focused email service with any Convex project. They also just kicked off a hackathon with over $5,000 in prizes. [sponsored]

4. The Remix/React Router team wrote on the Remix/React Router blog about The path forward for React Router and RSC. It feels like we’re less than 6 months away from them announcing a Rust rewrite.

5. Nine days after Vercel acquired NuxtLabs, they released Nuxt 4.0. Because Papa G wants to see everyone shipping.

6. In unrelated news, Tanner Linsley announced that Nitro will not be a hard dependency for TanStack Start 1.0 and will continue working towards “Vite-native” support.

7. Jeff Escalante from the Clerk team wrote this very in-depth guide to How OAuth works – which walks you through a complete implementation to show you all the nuts and bolts of how it works in practice. [sponsored]

8. Techartist used p5.js to create this animated, interactive particles project. Your stoner cousin is gonna love this.

9. Astro just created this guide on enhancing AI tools with up-to-date Astro knowledge, like the Astro Docs MCP.

10. CarbonQA provides QA services for dev teams, so you’ll never have to QA test your own app ever again. They work in your tools, talk with your team on Slack, and let your devs be devs. [sponsored]

11. Matias Gonzalez Fernandez wrote about rendering multiple objects simultaneously with Three.js instances.

12. Untitled UI React is the world’s largest collection of React components built with Tailwind and React. It’s so large, that people are starting to display it at rest stops along the I-40 in rural Missouri as a roadside attraction.