React
96 articles ยท all categories
July 2026
swizec.com is now on TimberJS, a new React framework
swizec.com is 20 years old and has gone through many rewrites. Here's the latest
October 2025
React, HTMX, and TanStack/Start
More and more UI frameworks are ditching JSON as the transfer protocol and going back to server-rendered markup injected into your app
September 2025
You may be looking for a useSyncExternalStore
When you see a `useEffect` that updates a `useState` and returns a value, you might be looking for a `useSyncExternalStore`. This is my current vendetta.
January 2025
Server-side React that renders as png, pdf, or interactive webapp
What if your React code could render as a PNG, PDF, static HTML, or fully interactive webapp just by changing the URL? I got a working demo! ๐
November 2024
The anatomy of a React Island
A coworker asked how React Islands work and I realized it's a technique I've been using to modernize monolithic web codebases for years, but never wrote down how it works.
August 2024
Tips from 8 months of TanStack/Router in production
On my last day at Tia I wrote a master vision doc for our TanStack Router app. Here are the parts I can share.
May 2024
Why useSuspenseQuery works
A reader asked 'Wtf why does this work?'
Cleaner components with useSuspenseQuery
Sick of complex states in your code? React Suspense can simplify your components for more readable, robust code!
January 2024
TanStack Router โ modern React for the rest of us
TanStack Router puts the router in control of data, state, and UI and it's ... really good.
December 2023
People like me are why you shouldn't run a hosting company
A daring adventure of manipulating GET parameters in a NextJS 14 project, pushing hosting limits and avoiding the need for data storage. Dive into the chaos of compressing inputs to keep the project delightfully storage-free.
October 2023
A few thoughts on tRPC
Discover tRPC's potential in building end-to-end type safe RPC APIs in this insightful blog post. Perfect for developers seeking innovative solutions for server-client separation in webapp development.
July 2023
Update state during render, better explained
A few readers wrote in to say that the React Can Update State During Render email last week made no sense. Here's a better explanation.
June 2023
React can update state during render
An unexpected feature of React: updating state during render. It's a UX and performance optimization
January 2023
My biggest React App performance boost was a backend change
Performance lives in the unlikliest of places. Follow the metrics.
Async React with NextJS 13
We look at React's native async support and how to use it in a NextJS 13 app. Learn how to use async components, parallel loading states, and caching with React.js and NextJS 13.
November 2022
Reader question: useReducer or XState?
Following up from my article about XState and Stately.ai, fellow reader S. asked if `useReducer` could ever be relevant when using state machines in React code. Yes! Here's how
When your brain is breaking, try Stately.ai
Two years ago I wrote about using XState after building a UI interaction so twisted my brain leaked out my ears. It helped. Now the creators have made something even better โ Stately.ai ๐
September 2022
useCallback is a code smell
One of my favorite ways to simplify and de-gotcha React code is to rip out all the useCallback and useMemo drama. 90% of the time you don't need it.
May 2022
Learnings about the future of the web from Reactathon
The first in-person conference in years! It was wonderful ๐คฉ - Remix is great - Serverless at edge is the future - GDPR does not play with ๐
March 2022
Adding categories to a Gatsby blog (for better SEO)
One of my biggest frustrations since migrating swizec.com from Wordpress to Gatsby was that I never added categories. Always wanted to, never did. Thought it would be super hard. Gatsby made it painless
February 2022
A new VSCode extension makes state machines shine on a team
When you grok state machines, a new world of computational beauty and software design opens in front of your eyes. Things that used to be hard become easy. The impossible becomes possible. And you turn into that annoying team member.
January 2022
How to add Typeform as a Gatsby source
Every year I ask readers if they're enjoying my newsletter. Then fail to use those responses ๐ This year I said heck it and built a /testimonials page that shows everyone's feedback raw from Typeform. Here's how.
November 2021
You can use React Query for slow computation, not just API
You can use the ergonomics of React Query for any slow operation and it's wonderful.
Why I'm excited about React 18 โ talk
React 18 is coming soon. I hope ๐ค Here's a talk I gave exploring its implications and showing off demos with working code.
July 2021
React 18 and the future of async data
Friend, I have glimpsed the future and it is amazing. React 18 is shipping with Suspense and startTransition for deferred component rendering, but not data loading. That's coming in a future 18.x version.
June 2021
Hacking the React AST for fun and profit โ #CodeWithSwiz ep34
This is hold my beer level of hackery. It didn't work but we learned lots in the process.
A better React 18 startTransition demo
Demoing startTransition is hard. Modern computers are too fast ๐ โ Dan Abramov, a React core team member, helped me fix it up. Here's what I learned
Trying out React 18 Alpha
I read everything about React 18 Alpha, trawled through the work group, and ran some experiments. Here's what you'll wanna know.
April 2021
2 quick tips for 250% better Lighthouse scores โ CodeWithSwiz 28
Your site may be fast for users, but Google don't care. Official metrics or bust.
March 2021
Variants โ a quick tip for better React components
Reusable components like to grow boolean props for different situations and complexity soon blows up. Variant props are the perfect solution.