--- /dev/null
+from typing import Any, Callable, TypeVar
+from typing_extensions import ParamSpec
+
+_T = TypeVar("_T")
+_P = ParamSpec("_P")
+
+def _clear() -> None: ...
+def _ncallbacks() -> int: ...
+def _run_exitfuncs() -> None: ...
+def register(func: Callable[_P, _T], *args: _P.args, **kwargs: _P.kwargs) -> Callable[_P, _T]: ... # type: ignore
+def unregister(func: Callable[..., Any]) -> None: ...