lint: fix mypy

faststream/broker/fastapi/route.py

@@ -72,7 +72,7 @@ def __init__(
         if isinstance(endpoint, HandlerCallWrapper):
             orig_call = endpoint._original_call
             while hasattr(orig_call, "__consumer__"):
-                orig_call = orig_call.__wrapped__  # type: ignore[attr-defined]
+                orig_call = orig_call.__wrapped__  # type: ignore[union-attr]
 
         else:
             orig_call = endpoint
@@ -106,12 +106,13 @@ def __init__(
             )
         )
 
+        handler: HandlerCallWrapper[Any, Any, Any]
         if isinstance(endpoint, HandlerCallWrapper):
             endpoint._original_call = call
             handler = endpoint
 
         else:
-            handler = call
+            handler = call  # type: ignore[assignment]
 
         self.handler = broker.subscriber(  # type: ignore[assignment,call-arg]
             *extra,

faststream/utils/classes.py

@@ -1,4 +1,4 @@
-from typing import Any, ClassVar, Optional, cast
+from typing import Any, ClassVar, Optional
 
 from typing_extensions import Self
 
@@ -28,7 +28,7 @@ def __new__(cls, *args: Any, **kwargs: Any) -> Self:
         """
         if cls._instance is None:
             cls._instance = super().__new__(cls)
-        return cast(Self, cls._instance)
+        return cls._instance
 
     @classmethod
     def _drop(cls) -> None: