Add TypeAlias LazyValue

server/entertainment_decider/extras/__init__.py

@@ -1,8 +1,10 @@
 from .chain import Chain
 from .strings import remove_common_trails
+from .typing import LazyValue
 
 
 __all__ = [
     "Chain",
+    "LazyValue",
     "remove_common_trails",
 ]

server/entertainment_decider/extras/typing.py

@@ -0,0 +1,16 @@
+from typing import (
+    Callable,
+    TypeAlias,
+    TypeVar,
+)
+
+
+T = TypeVar("T")
+
+
+LazyValue: TypeAlias = Callable[[], T]
+
+
+__all__ = [
+    "LazyValue",
+]