Sounds like MobX (for Dart) https://mobx.netlify.app/ (and GetIt, for the DI)

That’s true — they both come from the same foundation of reactivity. As far as I know, in the frontend world, there’s even a saying that React + MobX ≈ Vue.

However, there are still some key differences:

1. MobX’s reactivity in Flutter is based on build_runner, which means it relies on a code generator. This introduces certain limitations, and build_runner itself is often criticized for being cumbersome. In contrast, this framework is built on top of the alien_signals package — a Dart port of one of the fastest reactive libraries in the JavaScript ecosystem — which works entirely at runtime.

2. This framework brings the Composition (or Hook) API into Flutter. I believe this is currently one of the most convenient and intuitive ways to organize and structure application logic.