Use /collab in Discord for private repo access to early features and fixes not yet available on the Asset Store. OneJS V2 is in preview on branch onejs-v2: better performance, zero-allocation interop, and new esbuild workflow. A portion of the v2.0 doc is currently available, but it is still a work in progress.
The Scripting Engine and
UI Solution for Unity
OneJS brings the power of Typescript, (P)React, Live-Reload, and many other beloved web techs to Unity. It is lightweight, performant, works everywhere, has 1-to-1 interop with UI Toolkit, and does not require any browser/webview embedding.
Jint

Do Everything in Typescript

No more waiting for C# compilation and Domain Reload. You can access the entirety of UnityEngine or any .Net assemblies in Typescript.

Preact and Live-Reload make UI Dev a breeze

Preact Hooks and Signals work out-of-the-box. Same goes for Tailwind, Styled Components, and Emotion.

Works Everywhere

Windows, Mac, iOS, Android, Editor, Standalone, Mono, Il2cpp

Live Sync Code across Multiple Devices

Yes, live-testing code and UI on target devices can be this easy!

Full-Source UI Samples

Join Us on Discord! 
discord.gg/dwnYFte6SF