#​460 — January 30, 2026

Read on the Web

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The Engineering Behind GitHub Copilot CLI’s Animated ASCII Banner — GitHub’s Copilot CLI tool is built, like many terminal-based coding agents, around Ink, a React-powered TUI renderer. The team explains how they integrated a fancy animation into that app and, as a byproduct, GitHub's animator Cameron Foxly created ASCII Motion, a Web-based ASCII art animation tool (which is an open source React app too).

Aaron Winston (GitHub)

Query Billions of Rows in Milliseconds — Building dashboards or analytics features? TimescaleDB gives you hypertables for automatic partitioning, 95% compression, and continuous aggregates that refresh in real-time. Full Postgres compatibility. Start building for free.

Tiger Data sponsor

⚠️ More DoS Fixes for Server Components Arrive in React 19.2.4, 19.1.5, and 19.0.4"It was found that the fixes to address DoS in React Server Components were incomplete and we found multiple denial of service vulnerabilities still exist in React Server Components."

React Team

💡 In related security news, Vercel summarizes two DoS vulnerabilities found that affect self-hosted Next.js apps, fixed in Next.js 15.5.10, 15.6.0-canary.61, 16.1.5 and 16.2.0-canary.8.

JavaScript Frameworks – Heading into 2026 — Every year, SolidJS creator Ryan Carniato takes stock of the JavaScript framework landscape. Saying we're in "an incredibly exciting time", he breaks things down across several areas of development. The momentum he's tracking is hard to ignore.

Ryan Carniato

IN BRIEF:

▶  Improving Performance using React Server Components — This ReactNext ‘25 talk, given by an engineer at Vercel, provides a good primer on RSCs, then moves on to live coding some advanced patterns for getting the best performance out of them.

Gal Schlezinger

🤖 Vercel Finds AGENTS.md Outperforms Skills in Evals — Vercel has been doing a lot of research into agentic development recently (releasing its React Best Practices skills just recently). But in its latest evals targeting Next.js 16 development, it found jamming an 8KB docs index into an AGENTS.md file did a better job due to skills not being reliably triggered.

Vercel

Clerk MCP Server for AI Coding Assistants — Connect Claude, Cursor, or Copilot to Clerk's docs. Get working auth code instead of outdated patterns.

Clerk sponsor

📄 Single Flight Mutations in TanStack Start – You couldn’t ask for more depth than covered in this two-part series. Adam Rackis

📄 Bringing CSS Clipping to React Native Kamil Paradowski

📄 Writing Good Unit Tests for React Elio Capella Sánchez

🛠  Code, Tools & Libraries

Facehash: Unique Minimalist User Avatar Component — Not all of your users will upload an avatar, so Facehash can stand in where a blank icon might fall flat. This component gives you subtle, yet characterful, automatic avatars, and can also work as a fallback for when a user's own avatar doesn’t load.

Cossistant

React Tilt Button: A 'Tactile' 3D Button Component — Tactile in the sense that it has a ‘squishy press’ to it and if you hover over it, it tilts as if there’s a finger resting on it. This is a cute customizable demo. GitHub repo.

Archis Vaze

🔁 Travels 1.0: A Fast, Efficient Undo/Redo Library — Add undo/redo functionality to your apps using a memory efficient technique that only stores changes rather than full snapshots for each change. A use-travel hook is available for React integration.

Mutative

React2AWS: AWS Infrastructure as React Components — I’m not sure how I feel about this.. are we reinventing XML? 😅 But it’s certainly a creative idea and lets you write JSX which is transformed into Terraform code for prod.

Marko Marinovic

📰 Classifieds

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📢  Elsewhere in the ecosystem

Some other interesting stories in the broader landscape: