redux-firestore/Lobby

Hello, I'd like to confirm my understanding of how the library works.

I've noticed that DOCUMENT_MODIFIED seems to replace the entire doc instead of merging with the old doc.

Based on the code in dataReducer.js (link), on DOCUMENT_MODIFIED, the previous doc gets entirely replaced. This is an issue because we have a nested object and don't want the selector to return new data if the nested object hasn't updated. It seems the only thing we can do is a deep-compare across all the keys in the object instead of a shallow reference compare here (i.e. ideally, old.nested_object === new.nested_object).

Is our understanding correct? Is there a better way to get the behavior we're looking for? See code sample below:

// Using redux hooks
useSelector(state => state.firestore.data.myTask, (prev, current) => {
  // tasks have a lastUpdatedDate which is updated on the server
  // we don't want the selector to re-fire when only this field is updated
  // so do a specific check against the fields we care about
  return (
    prev.title === current.title &&
    prev.description === prev.description &&
    //! redux-firestore overrides the entire document
    //! so we can't do a quick sharing === sharing check
    //! this might have performance issues on heavily shared tasks...
    isEqual(prev.sharedWith, prev.sharedWith)
  );
});