If you don't have to support IE11, there has been a very interesting trend of JS Proxy based state managers (immer, react-easy-state, overmind, etc.). It reduces the boilerplate compared to redux while giving basically the same architecture. I have been using my own implementation, because react-easy-state did not work well with styled components (https://github.com/UgnisSoftware/lape), while I was building https://github.com/UgnisSoftware/Ugnis if you want to see this approach in use.