Write only atom that returns (prevState) => {} - setAction

[AlekseyP18]

Hello, I am new in using jotai user)
How can I create a writeOnlyAtom that will have setAction like basic atom? Thanks)

const write = ....;
const userWriteAtom = atom(null, write)

const [, setUser] = useAtom(userWriteAtom);

const updateUser = (newUser) => setUser(prevUser => ({ ...prevUser, ...newUser }));
const resetUser = () => setUser(null);

[dai-shi]

There are some ways depending on your requirement with the write-only atom, but this should help:

const userWriteAtom = atom(null, (get, set, arg) => {
  const prevUser = get(currentUserAtom);
  const nextUser = typeof arg === 'function' ? arg(prevUser) : arg;
  set(currentUserAtom, nextUser);
});

[AlekseyP18]

Thanks for fast answer! Here is a good community)