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Dev tools · June 26, 2025

EU

Effect UI – PoC of a reactive UI framework built with Effect

Hi HN, I'm Mathieu and two days ago I ran into a YouTube video about Effect ("a powerful TypeScript framework that provides a fully-fledged functional effect system with a rich standard library"). This made me so exited that I wanted to build something with it and this is the result! Effect UI - A reactive UI framework completely build with Effect. Reactive properties are SubscriptionRefs which make fine-grained reactivity possible (like in SolidJS, no re-renders like in React). Components are just Effects, which makes dependency injection of themes, clients and stores possible by using…

What it does

In the maker’s words, at launch

Hi HN, I'm Mathieu and two days ago I ran into a YouTube video about Effect ("a powerful TypeScript framework that provides a fully-fledged functional effect system with a rich standard library"). This made me so exited that I wanted to build something with it and this is the result! Effect UI - A reactive UI framework completely build with Effect. Reactive properties are SubscriptionRefs which make fine-grained reactivity possible (like in SolidJS, no re-renders like in React). Components are just Effects, which makes dependency injection of themes, clients and stores possible by using Contexts. It is just a proof of concept, but I think it's pretty cool! Let me know what you think or how I can improve it, since I'm definitely not yet an Effect expert. You can see a basic demo on my Twitter/X profile: https://x.com/m9tdev/status/1938148717158076811

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