feat: comment from review

dataclasses_json/core.py

@@ -316,15 +316,8 @@ def _decode_generic(type_, value, infer_missing):
 
  # get the constructor if using corresponding generic type in `typing`
  # otherwise fallback on constructing using type_ itself
- try:
- materialize_type = _get_type_cons(type_)
- except (TypeError, AttributeError):
- materialize_type = type_
-
- # map abstract collection to concrete implementation
- materialize_type = collections_abc_type_to_implementation_type.get(materialize_type, materialize_type)
-
- res = materialize_type(xs)
+ collection_type = _resolve_collection_type_to_decode_to(type_)
+ res = collection_type(xs)
  elif _is_generic_dataclass(type_):
  origin = _get_type_origin(type_)
  res = _decode_dataclass(origin, value, infer_missing)
@@ -417,6 +410,16 @@ def handle_pep0673(pre_0673_hint: str) -> Union[Type, str]:
  return list(_decode_type(type_args, x, infer_missing) for x in xs)
 
 
+def _resolve_collection_type_to_decode_to(type_):
+ try:
+ collection_type = _get_type_cons(type_)
+ except (TypeError, AttributeError):
+ collection_type = type_
+
+ # map abstract collection to concrete implementation
+ return collections_abc_type_to_implementation_type.get(collection_type, collection_type)
+
+
 def _asdict(obj, encode_json=False):
  """
  A re-implementation of `asdict` (based on the original in the `dataclasses`