Merge pull request #130 from frankdu/main

Fix the type annotation on client_close_handler_callable

Author: sysid

sse_starlette/sse.py

@@ -84,7 +84,7 @@ def __init__(
             Callable[[], Coroutine[None, None, None]]
         ] = None,
         send_timeout: Optional[float] = None,
-        client_close_handler_callable: Optional[Callable[[Message], None]] = None,
+        client_close_handler_callable: Optional[Callable[[Message], Awaitable[None]]] = None,
     ) -> None:
         # Validate separator
         if sep not in (None, "\r\n", "\r", "\n"):