Motivation

Blocs are components designed to take care of a specific part of the business logic. Typically their scope is similar to a view model scope. Creating a more than basic app will require to compose blocs into larger business logic components. There are different ways to achieve this (e.g. use the same BlocState in multiple Blocs or use a Bloc as BlocState) but one option is particularly enticing:

A Redux store is a state container holding the application's state. While there can be more than one store, the intended pattern is to have only a single store (https://redux.js.org/faq/store-setup). A Redux store seems to be a good candidate for sharing state between Blocs if we find a way to slice and dice the global state tree into smaller bits to serve as a Bloc's state (which is exactly what this extension allows us to do).