🏁 Final Form goes to TypeScript
All Final Form modules have been modernized to TypeScript
June 7, 2025 - 4 min read
Web Log
Building Complex UI with State Machines
City JS Athens, React Alicante, What The Stack, and React Africa – 2024
December 16, 2024 - 3 min read
Guide to the Internet
A paper I wrote about the emerging Internet in 1991.
Posted in Technology
August 1, 2023 - 17 min read
Model Based E2E Testing with State Machines
with Playwright and @xstate/test – Tenerife, Spain – May 2023
Solid for React Developers
A shallow dive into understand what makes Solid fundamentally different from React
XState in Solid
How to use the best state machine library in Solid
December 8, 2022 - 5 min read
Solid Final Form – Proof of Concept
Since its inception, Final Form was designed to outlive existing frameworks.
Posted in 🏁 Final Form, Solid JS
November 26, 2022 - 5 min read
JavaScript Unsubscribe Sugar Proposal
I think it's fair to say that JavaScript is an "event-driven" language.
Posted in JavaScript
September 14, 2022 - 4 min read
Coding in Flow
Render ATL – Atlanta, Georgia, USA – June 2022
Modeling React in XState
Can XState state charts improve your understanding of the React render cycle?
State Machines on the Edge
Remix Conf – Salt Lake City, Utah, USA – May 2022
June 24, 2022 - 6 min read
You're a Wizard Form, Harry.
Infobip Shift – Zadar, Croatia – September 2021
September 9, 2021 - 3 min read
What I learned at Distru
As I leave this amazing company, I want to share a few of the things I learned.
Posted in Coding, Engineering
August 20, 2021 - 15 min read
Creating an Observable Subject in ReScript
Creating a Subject is a good way to test your skills in a new language.
A reducer is a single-state state machine
If you write a state machine that only has a single state, but modifies its context, what you've created is a reducer.
March 23, 2021 - 3 min read
Finite State Machines in ReScript
ReScript's strong typing makes it especially well suited for defining Finite State Machines.
March 22, 2021 - 8 min read
Should we follow Observables?
If all the social media platforms are moving from "subscribe" to "follow", what do we do to Observables?
Posted in Coding
March 19, 2021 - 3 min read
Open Source Sustainability
The status quo in open source is broken. Corporations profit hugely from open source libraries, and give almost nothing back, which leads to burnout which is bad for everyone.
Posted in Coding
July 1, 2020 - 10 min read
Render Props are Not Dead
React Europe – Not Paris 😭 – 2020
Modern Forms in React
ReactConf AU – Sydney, Australia – 2020
March 4, 2020 - 1 min read
Modern Forms in React
JSDC – Taipei, Taiwan – 2017
Posted in Talks, 🏁 Final Form
February 7, 2020 - 1 min read
⏯️ AudioCard — The React audio player designed for podcasts and Twitter cards
Engage your podcast audience on social media with an in-Twitter player!
Posted in Coding
April 16, 2019 - 3 min read
Introducing… 🔒 Blockchain Form
From the guy who thought putting form state in Redux was a good idea...
🏁 Final Form: Form state management via Observers
Holy JS – Moscow – 2018
Posted in Talks, 🏁 Final Form
March 19, 2019 - 1 min read
Next Generation Forms with React Final Form
React Alicante – Alicante, Spain – 2018
September 19, 2018 - 1 min read
iOS Detective: The Case of the Stolen iPhone
What follows is a true story that happened to me last night.
Posted in Technology
September 17, 2018 - 7 min read
💡 IDEA: JavaScript Compatibility as a Service
What if javascript bundling happened at the CDN?
Posted in Coding
April 16, 2018 - 4 min read
Getting a Promise from Redux Actions
"Great!", you’re thinking...just what the world needs: another blog post about Promises in Redux! Don’t leave yet; this one’s different.
🏁 React Final Form HTML5 Validation
You can now get native HTML5 validation functionality by substituting your Field component with one from react-final-form-html5-validation.
March 27, 2018 - 5 min read
Declarative Form Rules
How can I update field B when field A changes from X to Y?
Posted in Coding, 🏁 Final Form
March 22, 2018 - 3 min read
Focus On Errors 🧐
Without a doubt, one of the most common questions I hear from people using my forms libraries is, "How can I focus on the first field that has an error?"
Posted in Coding, 🏁 Final Form
March 19, 2018 - 5 min read
🏁 Final Form — Decorators, Calculated Fields, and Warnings
Two examples of how powerful decorators and mutators can be, when combined with the subscription-based paradigm of 🏁 Final Form
Posted in Coding, 🏁 Final Form
December 11, 2017 - 5 min read
🏁 Final Form – Field Arrays and Mutators
Extending the core functionality of Final Form
Posted in Coding, 🏁 Final Form
December 4, 2017 - 4 min read
🏁 Final Form – Announcement
The road to the checkered flag
Posted in Coding, 🏁 Final Form
November 27, 2017 - 9 min read
A practical guide to Redux Form
React Alicante – Alicante, Spain – 2017
November 8, 2017 - 1 min read
Redux Dead Drop
Asynchronous Communication Like A Spy
Abstracting Form State with Redux Form
JS Channel – Bangalore, India – 2016
Posted in Talks, Redux Form
August 2, 2016 - 1 min read
The HOC Drill Pattern
Drilling props through HOC-wrapped components