fix type hint annoyance

docs/source/about/changelog.rst

@@ -23,6 +23,10 @@ more info, see the :ref:`Contributor Guide <Creating a Changelog Entry>`.
 Unreleased
 ----------
 
+**Fixed**
+
+- :pull:`908` - minor type hint issue with ``VdomDictConstructor``
+
 **Removed**
 
 - :pull:`907` - accidental import of idom.testing

pyproject.toml

@@ -12,6 +12,7 @@ line_length = 88
 lines_after_imports = 2
 
 [tool.mypy]
+incremental = false
 ignore_missing_imports = true
 warn_unused_configs = true
 warn_redundant_casts = true

src/idom/core/types.py

@@ -15,6 +15,7 @@
     Type,
     TypeVar,
     Union,
+    overload,
 )
 
 from typing_extensions import Literal, Protocol, TypeAlias, TypedDict, runtime_checkable
@@ -199,6 +200,23 @@ class EventHandlerType(Protocol):
 class VdomDictConstructor(Protocol):
     """Standard function for constructing a :class:`VdomDict`"""
 
+    @overload
+    def __call__(
+        self,
+        *children: VdomChild | VdomChildren,
+        key: Key | None = None,
+        **attributes: Any,
+    ) -> VdomDict:
+        ...
+
+    @overload
+    def __call__(
+        self,
+        *children: VdomChild | VdomChildren,
+        **attributes: Any,
+    ) -> VdomDict:
+        ...
+
     def __call__(
         self,
         *children: VdomChild | VdomChildren,