#73: Tailwind 4.0, Server Functions, React Scan, New EAS Hosting, JavaScript Trends 2025

Tailwind CSS v4.0 – It’s finally out! Version 4 of Tailwind CSS comes with a lot of amazing improvements such as: CSS-first configuration, dynamic utility values and variants, support for container queries, and more new utility and variant classes

Next.js React Server Component Testing – A GitHub repository demonstrating an end-to-end test setup for a Next.js app with React Server Components

What is middleware in Next.js? – Learn all about Next.js middlware, including it’s use cases, best practices, and more.

Build an AI Agent with Inngest, Next.js and Render – Learn how to build and deploy an AI-powered app that summarizes Hacker News stories based on your custom topics and questions

Next.js: An honest review – Josef shares his insights on using Next.js and Vercel, highlighting both the advantages and the challenges of building your app with them. Don’t miss Lee Robinson’s response to this post for more perspective

𝕏 Next.js 🤝 EAS Hosting – With EAS (Expo Application Service), the React Native Platform is stepping into the hosting space, positioning itself as a competitor to Vercel. This guide shows you how to deploy a static Next.js app on EAS

► Forms with React 19 and Next.js – Explains how to implement forms with client and server validation in Next.js

React Scan – Version v0.1 is out. If you don’t know what it is: React Scan automatically detects and highlights components that cause performance issues in your React app. Also, check out the Replay feature that will be released soon

Reablocks – A highly customizable, React components-library that combines the flexibility and ease of Tailwind CSS with the power of Framer Motion

Announcing ArkType 2.0 – A TypeScript-based runtime validation library that is 100x faster than Zod

Storybook 8.5 – React 19 support, realtime a11y tests, experimental Bun support and more

More:

• React Spectrum: January 2025 Release – firstDayOfWeek prop for the calendar and date picker components, CSS transitions in overlays, and a new Autocomplete component in alpha
• Vercel acquires Tremor
• NextUI becomes HeroUI

Picking a state management library for a React app used by millions – The CTO of Photoroom shares their insights on why they chose MobX for React state management and explains how they navigated the transition process for their existing codebase

5 Technical JavaScript Trends You Need To Know About in 2025 – Interesting opinion piece on emerging JavaScript trends to watch this year

Why Server Functions Matter In A Server Component World – Super insightful breakdown of React’s latest Server Functions feature versus Server Components. Understand when to choose one over the other

How I brought LCP down to under 350 ms for Google-referred users on my website – The first in a series of articles about Signed Exchanges (SXG) and how to use them to make your website lightning-fast for visitors arriving from Google Search. Don’t worry if you’ve never heard of SXG before. The article is beginner friendly and explains all you need to know