streamFirst method
To stream document data by document id call streamFind as pass docId Stream
Implementation
Stream<T?> streamFirst(
{Query queryBuilder(Query query)?, Function(T? dataChange)? onChange}) {
Query _query = _collectionReference;
if (queryBuilder != null) {
_query = queryBuilder(_query);
}
return _collectionReference.limit(1).snapshots().map((snapshot) {
if (snapshot.docChanges.isNotEmpty &&
!snapshot.metadata.hasPendingWrites) {
if (onChange != null) onChange(_toModel(snapshot.docChanges.first.doc));
}
return _toModel(snapshot.docs.first);
});
}