🗜️ I stored an entire website in a favicon

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Hey there.

Welcome to Full Stack Focus. 👋

Here's everything you need to know this week in the world of full-stack development.

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Front-End

🪢 The Parent-Child Update Problem Most React Devs Get Wrong A child changes and the parent needs to react — here's the clean pattern instead of the callback spaghetti you reach for by default.

⚡ React-Redux Just Got 20–40% Faster — and AI Wrote Almost All of It The maintainer prototyped a signals-based selector engine for large apps, drove the whole thing with AI, and the benchmarks are no joke.

🧩 What Actually Happens Between React Server Components and Your Bundler The part of RSC nobody explains, finally laid out end to end.

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Programming

🗜️ I Stored an Entire Website Inside a Favicon No server, no hosting — the whole site lives in the tiny icon on your browser tab. Yes, really.

🐌 Old Software Was Fast Because It Had No Choice Why apps from 20 years ago felt instant — and what we quietly gave up when hardware got generous.

🔮 This Library Prefetches the Page Before You Click It It reads your cursor's trajectory and loads what you're heading toward — navigation that feels like mind-reading.

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AI

🤖 Vercel's New Agent Framework: An Agent Is Just a Folder Meet eve — open-source, batteries-included, and built on the idea that your whole agent is a directory of files.

🔥 Days Later, the Astro Team Shipped a Rival Agent Framework Flue 1.0 beta lands with zero lock-in and a familiar pitch. The agent-framework wars are officially on.

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More Tools & Stories

🧭 React Router v8 Is Here

📉 How We Cut Slow Responses by 80% Moving to the Next.js App Router

⌨️ React Props First — Put Your Component's Props at the Top of Autocomplete

🎨 Reshaped — A Pro-Grade React Component Library

🌌 Next.js Nights Shader

🪄 Artifacts Come to Claude Code

🛡️ Google's Plan for Securing AI Agents

🔳 A No-Frills QR Code Generator

🗺️ The React Developer Roadmap

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Have a great week, see you the same time next week!

Full Stack Focus team :)