[kroltan]

No idea what destructive updates are, but determinism is when you can run multiple times in multiple environments and get the same results

[xchip]

then yes, it is deterministic :)

[reificator]

I don't mean to be rude, but if you don't know the term I'd put money on it not being deterministic. Especially if you're running in JavaScript on multiple browsers.

A single step that isn't consistent in behavior across every setup is enough to make the entire process non-deterministic.