chore: import upstream snapshot with attribution

2026-07-13 12:47:58 +08:00
commit b16403ea71
789 changed files with 115226 additions and 0 deletions
@@ -0,0 +1,7 @@
+from typing import TypeVar, Union, Callable, Awaitable
+
+T = TypeVar("T")
+OutputHandler = Union[
+    Callable[[T], None],
+    Callable[[T], Awaitable[None]],
+]