Annotate Self in overloads

Author: jfhbrook

pyee/base.py

@@ -75,9 +75,9 @@ def __setstate__(self: Self, state: Mapping[str, Any]) -> None:
         self._lock = Lock()
 
     @overload
-    def on(self, event: str) -> Callable[[Handler], Handler]: ...
+    def on(self: Self, event: str) -> Callable[[Handler], Handler]: ...
     @overload
-    def on(self, event: str, f: Handler) -> Handler: ...
+    def on(self: Self, event: str, f: Handler) -> Handler: ...
 
     def on(
         self: Self, event: str, f: Optional[Handler] = None