getMap for AtomFamily

[sowhatdoido]

Sorry if this has been asked before: I was looking for a way to iterate over an atom family.

I came upon a discussion where you said it isn't iterable by design, but in another place you mentioned that AtomFamily is supposed to be a simple helper function around map.

Is there a reason, philosophically, why you couldn't implement a getMap function that just returns the underlying map for people to iterate over?

https://github.com/pmndrs/jotai/blob/main/src/vanilla/utils/atomFamily.ts

createAtom.getMap = () => atoms;

I figured that would be a straight forward way of exposing the underlaying data structure for people to manipulate directly, including iterate over, but I wasn't sure if that would mess something up with reactivity or something.

[dai-shi]

See also #2056