I implemented a similar feature in the Blop language, but by simply using a Proxy https://github.com/batiste/blop-language https://github.com/batiste/blop-lang

I implemented a similar feature in the Blop language, but by simply using a Proxy https://github.com/batiste/blop-language https://github.com/batiste/blop-language Not sure why they claim proxies are complicated... I found it was a piece of cake to implement a working library for state management using a Proxy.