Mobx works fairly well like this and in our case we use it for the UI where it works well. At the centre you have your pure data and then a bunch of transformat

Mobx works fairly well like this and in our case we use it for the UI where it works well. At the centre you have your pure data and then a bunch of transformations on the way out to your interface (eg, you have a list of all cars, but you have a computed function of all cars available for sale sorted by price). Then at the top, only stuff that’s actually currently used for rendering needs to be computed at keep hot.