The next era of React has arrived: Here’s what you need to know!

PAPAFAM Newsletter #199

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The next era of React has arrived: Here’s what you need to know

The post describes the architectural shift behind async React, where React 19's new coordination primitives such as: useTransition, Suspense, useDeferredValue, and the new use() API turn async logic into declarative building blocks

Two new RSC protocol vulnerabilities

Following last week's React2Shell exploit, two new vulnerabilities affecting Next.js App Router (v13-v16) have been discovered. One can freeze your server, and the other could leak your source code. There is no workaround other than upgrading immediately. You can use npx fix-react2shell-next to automatically verify and update your app. Also check out: Security Bulletin: CVE-2025-55184 and CVE-2025-55183

Replacing Next.js ISR with a custom Cloudflare cache layer

Instead of relying on Next.js ISR, Mintlify built a custom caching layer powered by Cloudflare Workers, KV, Durable Objects, and Queues. This setup decoupled deployments from cache invalidation and pushed their cache hit rate to almost 100%.

How React 19.2 Further Advances INP Optimization

Interaction to Next Paint (INP) is a performance metric measuring a page’s responsiveness to user interactions, and React 19.2 offers a few new mechanisms for both improving responsiveness and debugging related problems.

React Grab: A React-Focused Tool for Agentic Development

Aiden is well known for his React Scan tool for detecting performance issues in React apps — now he’s turned his hand to giving coding agents React superpowers. It lets you “grab” context from your app’s components to feed to an agent of your choice for making detailed changes.

React Grid Layout 2.0: A Flexible Grid Layout System

A responsive grid layout system, a la Packery or Gridster, for use cases where CSS grid might not check all your boxes. GitHub repo.

Build an AI E-Commerce Platform w/ Next.js 16 + More!

Join me as I show you how to build an AI E-Commerce Platform with NEXT.JS 16, Sanity, Clerk, Stripe, AI Agents, Zustand + More!

PAPAFAM Member landing a  Job at Microsoft with the help of the PAPAFAM!

Our Book Recommendation For You

Why can some people and companies change overnight and some stay stuck in their old ruts? The answer lies deep in the human brain, and The Power of Habits reveals the secret pressure points that can change a life. From Olympic swimmer Michael Phelps to Martin Luther King Jr., from the CEO of Starbucks to the locker rooms of the NFL, Duhigg explores the incredible results of keystone habits and how they can make all the difference between billions and millions, failure and success – or even life and death...Read More