Earlier quoted context omitted.
Doesn't Preact use the same model but prioritise bundle size over performance?
It's not the same model. Many, many (if not most) devs probably do not realize that React has an "inverted" model of reactivity and is in fact the root cause of it's performance woes. To the extent that the React team spent 2+ (almost 3?) years working on a compiler to address the issue by adding in the correct memoization primitives in a compile phase (trading increased memory consumption for more runtime performanc…
Preact is mostly API-compatible with React, and it having a different underlying model is an extraordinary claim that requires extraordinary evidence.
I've read the docs on Preact signals, and they look like React refs, but put outside of components.
edit: the last paragraph about refs