📘 Free React Performance Guide

This week kicks off with a free guide to performance optimization in Modern React, essential techniques to keep your apps fast and smooth. Plus: how senior devs work with LLMs, why writing helps you code better, and what new tech hype gets wrong (again). Oh, and don’t miss Shopify’s new Three.js racing game built with React.

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Hey guys,

Welcome to another edition of Import React by Cosden Solutions!

This week kicks off with a free guide to performance optimization in Modern React, essential techniques to keep your apps fast and smooth. Plus: how senior devs work with LLMs, why writing helps you code better, and what new tech hype gets wrong (again). Oh, and don’t miss Shopify’s new Three.js racing game built with React.

P.S. Ever wonder how senior devs structure large apps? Advanced Patterns React breaks it down with clear, reusable design patterns that scale.

Let's get into the newsletter! 🤙 

⚡️ The Latest In React 

⏩️ Performance Optimization in Modern React (FREE GUIDE)
I just mentioned this in my latest video, here's a free guide I put together on Performance Optimization in Modern React. Inside, you'll find the most essential techniques to keep your React apps running fast and smooth. Whether you're debugging re-renders or fine-tuning components, this one's for you.

🚗 Remix Declaration of Independence
This week, Ryan and Michael confirmed that Remix is moving on from React in an official post outlining the framework’s future. React Router will continue to be fully supported, with most of the team focused there. Remix v3 will be a new framework built on a fork of Preact, giving the team full control over the stack. The aim is to return to core principles: simplicity, stability, and style, while moving away from bundler-first development.

🏗️ Composing Server and Client Components
Not long ago, adding interactivity to a web page meant juggling <script> tags, global variables, and a lot of guesswork. Today, React Server Components offer a cleaner model, mixing server and client components in the same UI without the chaos.

⬇️ Why Composition Beats Inheritance In React
Peter Ivanov breaks down why composition beats inheritance when building scalable UI components. Choosing composition early helps your components grow cleanly as your app evolves. Even the React team backs this up: “Composition over inheritance”.

🤫 What every dev should know about using Environment Variables
Learn what environment variables are, how they work, and why they're essential in configuring apps without hardcoding values. This guide covers common pitfalls and best practices specifically for Expo React Native apps. You'll also see how to set environment variables using Node.js and how they impact your app’s behavior during development and deployment.

📈 100s of Developers Learning to Build at Scale

We’re around a month in, and the feedback on Advanced Patterns React has been incredible. I’m proud of everyone diving deep into the real design patterns behind scalable, production-grade React apps.

From advanced data fetching to routing, caching, and full-stack architecture, this course goes beyond features and teaches you how to think like a senior developer.

If you’re ready to build apps that scale confidently and cleanly, this is your next step.

🧠 AI & General Programming

🧠 Peer Programming with LLMs, For Senior+ Engineers
Programming with LLMs offers both productivity boosts and moments of frustration. Senior engineers are finding value in pairing LLMs with peer programming. This article curates insights from experienced engineers on using LLMs in real-world scenarios, minus the hype, plus practical takeaways.

📝 As a developer, my most important tools are a pen and a notebook
The most important tool for this developer isn’t code, it's writing. Stepping away from the screen to think, sketch, and reflect helps clarify problems and shape better solutions. Writing turns vague thoughts into tangible insights, reveals gaps in understanding, and even helps improve code quality. It’s both a thinking aid and a powerful refactoring tool.

🌀 The Recurring Cycle of 'Developer Replacement' Hype
Every few years, a new tech promises to replace developers, NoCode, the cloud, and now AI. But instead of obsolescence, we see transformation: new roles, new skills, and often higher salaries. AI-assisted development is following the same pattern, reinforcing that the true value in software lies not in writing code, but in architecting systems, something AI still can't replicate.

🙃 Don't solve problems you don't have. You're literally creating problems
Focus on the real problems your code has now, not hypothetical ones that distract with complexity and shiny tools. Code only has value when it’s running, so prioritize shipping. Imperfect code that reaches users beats perfect code no one sees. Release, learn, and evolve based on real use, not imagined needs.

Quick Links

  • React Photo Studio, a free image editor that runs entirely in the browser with React and WebGL.

  • An Open Source, Visual editor for React.

  • Your React Meta-Framework Feels Broken, Here's Why.

  • Rockpack, a lightweight, zero-configuration solution for quickly setting up a React application with full support for Server-Side Rendering.

  • Shopify just launched a racing game built in threejs and React (R3F).

The Best Ways To Optimize Performance in Modern React

In this video, I will talk about performance optimization in Modern React. It's no secret that performance has been an important topic extensively covered throughout the years since React has been created.

But today, in Modern React, things are different. Things have evolved, and those same principles and performance optimization tips no longer necessarily apply!

See you next week!

Darius Cosden