#79: Better Auth 1.2 + Multi Session, Streaming Metadata, Building APIs, OWASP Fullstack, Next.js ViewTransitions

Building APIs with Next.js – This guide walks you through using the App Router to create dynamic routes, handle web-standard requests, and add reusable middleware. Lee also recorded a video version of this guide

How Fluid compute works on Vercel – Explains how Vercel`'s new Fluid compute model is here to make serverless smarter by dynamically scaling resources in real time, prioritizing active or pre-warmed instances to minimize cold starts and cutting down on wasted compute

How to build a secure project management platform with Next.js, Clerk, and Neon – Learn a security-first approach to building web applications by building a secure project management platform with Next.js.

React Server Actions with Toast Feedback – Learn how to implement toast notifications for React Server Actions like upvoting, downvoting, and deleting users. Also covers edge cases such as Next.js caching quirks and race conditions.

𝕏 Next.js 15.2: Streaming Metadata – Async generateMetadata is now non-blocking and streamable, meaning your app can send initial UI to the browser before metadata generation finishes. Faster page loads, happier users.

How OWASP Helps You Secure Your Full-Stack Web Applications – A practical guide to understanding the OWASP Top 10 vulnerabilities and how they apply to full-stack JavaScript apps like Next.js.

Building a RAG Chatbot for the Health Domain with Next.js – A walkthrough of building a health assistant chatbot using Next.js, Upstash, and OpenAI. This project combines RAG, vector search, and streaming responses to create a fast, reliable chatbot. Includes tips on rate limiting and deploying to Vercel

More:

• Building 2 Nextjs websites at the price of 1, by hacking the dark/light mode
• Anatomy of a Next.js Application

Better Auth 1.2 – This release is packed. Stripe subscriptions, reCAPTCHA, API keys, teams/sub-orgs, and a shiny new init CLI. Oh, and they rewrote the core library to fix TypeScript editor lags. Tons of new features, social providers (TikTok, Roblox, VK), and performance boosts.

More Better Auth:

• Multi Session
• Polar.sh - Better Auth Plugin

Announcing TanStack Form v1 – TanStack Form v1 is here, and it’s loaded with features: type-safe forms, schema validation, async validation, and SSR support

Announcing TypeScript 5.8 – Highlights include granular return type checks, support for ESM require() under --module nodenext, and the new --erasableSyntaxOnly flag

Get ready for an unforgettable React celebration in the heart of Paris! – Join us at React Paris for 2 days of cutting-edge talks by Tejas Kumar, Aurora Scharff, David Khourshid, Kateryna Porshnieva, Dominik Dorfmeister, Dominika Zając, Kent C. Dodds and more... From advanced state machines to performance optimizations, each session will spark fresh insights to level up your React applications. Don’t miss this chance to connect with fellow developers and immerse yourself in the vibrant React community—right in the heart of Paris!

► New React Animation API Is Insane – Next.js 15.2 brings View Transitions for smooth page animations. This video offers a great intro to integrating this feature into your applications.

Rust to TypeScript Update: Boosting Prisma ORM Performance – Prisma is replacing its Rust query engine with a WASM module and TypeScript, making queries up to 3.4x faster and cutting the bundle size by 85–90%

Making Cloudflare the best platform for building AI Agents – Cloudflare shares a few announcements on how they’re making it easier to create AI agents with their new agents-sdk. You can now build smart, autonomous tools that run on Workers with just one command.

► TypeScript types can run DOOM – This is just wild! Someone actually managed to run Doom using only TypeScript types