Realtime Database query
Optionaloptions: UseObjectValueOnceOptions<Value>Options to configure how the object is fetched
converter: Function to extract the desired data from the DataSnapshot. Similar to Firestore converters. Default: snap.val().
User, loading state, and error
undefined if query is currently being fetched, or an error occurredtrue while fetching the query; false if the query was fetched successfully or an error occurredundefined if no error occurred
Returns the DataSnapshot of the Realtime Database query. Does not update the DataSnapshot once initially fetched