Creating custom annotation/decorator using a custom enhancer?

[chungwu]

I'm interested in making observable an object tree that includes arrays, objects, and instances of classes with properties that should also be made observable. I understand that mobx prefers users do make class instances observable from within the constructor of the classes, but I'd like these classes to not depend on mobx.

Browsing the code, it looks like what I'd want is to be able to write a custom enhancer, which I can then create a custom annotation / decorator for, and use in makeObservable. However, while it's easy to write a custom enhancer, it's hard to turn that into a custom annotation, as most of the machinery there is not exposed by mobx.

Is there a better way to do achieve what I want?

Thanks!