* [mobx-state-tree v7.4.0](https://github.com/mobxjs/mobx-state-tree) – MobX-based state container library that adds structure, async actions, and efficient React reactivity with minimal boilerplate. * [Immer v11.1.18](https://github.com/immerjs/immer) – Library for creating immutable state trees by modifying the current state.