diff --git a/enums.py b/enums.py
new file mode 100644
index 0000000..8bbbc83
--- /dev/null
+++ b/enums.py
@@ -0,0 +1,38 @@
+# encoding: utf-8
+"""
+Internal enums.
+"""
+
+import typing as _t
+
+try:
+	from enum import StrEnum as _StrEnum
+except ImportError:
+	from comfy.comfy_types.node_typing import StrEnum as _StrEnum
+
+
+T = _t.TypeVar('T')
+
+
+class __BaseEnum(_StrEnum):
+	@classmethod
+	def all_values(cls) -> _t.Tuple[str, ...]:
+		return tuple(x.value for x in cls)
+
+
+class DataTypes(__BaseEnum):
+	"""Additional data-types defined byt the node pack."""
+	STR_DICT = 'STR_DICT'
+
+	@staticmethod
+	def __custom_input_type_dict(_dict_args: _t.Tuple[_t.Dict[str, T], ...], kwargs: _t.Dict[str, T]) -> _t.Dict[str, T]:
+		res_dict: _t.Dict[str, _t.Any] = {"forceInput": True}
+		for d in _dict_args:
+			if d is not None:
+				res_dict.update(d)
+		res_dict.update(kwargs)
+		return res_dict
+
+	@classmethod
+	def input_str_dict(cls, *_dicts: _t.Dict[str, T], **kwargs: T) -> _t.Tuple[_t.Union['DataTypes', str], _t.Dict[str, T]]:
+		return cls.STR_DICT, cls.__custom_input_type_dict(_dicts, kwargs)