"Hi everyone! You'll have to get used to it: yet another week filled with AI content. From MCPs to Agent Skills to AI-specific CLIs, we don't know where to turn anymore. We're delighted to be ranked once again among the top 5 newsletters in the State of JavaScript 2025 survey. Thanks for your trust! By the way, we'd love your feedback - what do you like about the newsletter, and how could we make it better in 2026? Just hit reply and let us know! ❤️"
"React Performance, v2 Make React apps fast where it actually matters. An advanced performance course from Steve Kinney, focused on diagnosing real bottlenecks and fixing slow, janky React apps using modern React 19 patterns. 🚀 Modern React: Suspense, transitions, deferred values, hydration, server actions 🔍 Debug Faster: Find unnecessary re-renders with React DevTools & the Profiler 🧠 Smart Optimization: Memoization, virtualization, code splitting, optimistic UI ⚡ Feel-Fast UX: Learn how React Fiber prioritizes work to keep apps responsive"
"💸 PostHog - 8 learnings from 1 year of agents 👀 React DOM PR - Support for SubmitEvent.submitter 👀 React.dev PRs - Revamp docs of useOptimistic, useActionState, and useEffectEvent. 📜 React's ViewTransition Element - Chris Coyier compares the pros and cons of using <ViewTransition> VS the native platform API document.startViewTransition() in a React app. 📜 Why Inngest migrated off Next.js to TanStack Start - Reducing local dev time by 83% - Ingress was an early adopter of RSCs but got bitten by them, experienced slow local DX despite using Turbopack. They share their migration strategy and lessons learned. 📜 Reverse-Engineering Figma Make:"
AI topics dominate developer conversations, ranging from MCPs to Agent Skills and AI-specific CLIs. The newsletter reports a top‑5 ranking in the State of JavaScript 2025 survey and solicits reader feedback for 2026 improvements. A promoted React Performance v2 course emphasizes Suspense, transitions, profiler-led debugging, memoization, virtualization, code splitting, and optimistic UI to produce responsive apps. Recent ecosystem updates include a React DOM PR adding SubmitEvent.submitter support, revamped React.dev docs for hooks, and discussion of ViewTransition versus document.startViewTransition. Inngest migrated off Next.js to TanStack Start to reduce local development time, and PostHog shared eight agent learnings.
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