There's a mixin proposal in the react-future repo: https://github.com/reactjs/react-future/blob/master/01%20-%20Core/02%20-%20Mixins.js https://github.com/reac

There's a mixin proposal in the react-future repo: https://github.com/reactjs/react-future/blob/master/01%20-%20Core/02%20-%20Mixins.js https://github.com/reactjs/react-future/blob/master/01%20-%2...