Fix implicit-optional typing errors

Author: ndevenish

src/workflows/transport/common_transport.py

@@ -33,7 +33,7 @@ class CommonTransport:
     #
 
     def __init__(
-        self, middleware: list[type[middleware.BaseTransportMiddleware]] = None
+        self, middleware: list[type[middleware.BaseTransportMiddleware]] | None = None
     ):
         if middleware is None:
             self.middleware = []

src/workflows/transport/middleware/__init__.py

@@ -95,12 +95,12 @@ def transaction_begin(
         return call_next(subscription_id=subscription_id, **kwargs)
 
     def transaction_abort(
-        self, call_next: Callable, transaction_id: int = None, **kwargs
+        self, call_next: Callable, transaction_id: int | None = None, **kwargs
     ):
         call_next(transaction_id, **kwargs)
 
     def transaction_commit(
-        self, call_next: Callable, transaction_id: int = None, **kwargs
+        self, call_next: Callable, transaction_id: int | None = None, **kwargs
     ):
         call_next(transaction_id, **kwargs)
 
@@ -172,7 +172,7 @@ def transaction_commit(self, call_next: Callable, *args, **kwargs):
 
 
 class TimerMiddleware(BaseTransportMiddleware):
-    def __init__(self, logger: logging.Logger = None, level=logging.INFO):
+    def __init__(self, logger: logging.Logger | None = None, level=logging.INFO):
         if logger is None:
             logger = logging.getLogger(__name__)
         self.logger = logger

src/workflows/transport/offline_transport.py

@@ -28,7 +28,7 @@ class OfflineTransport(CommonTransport):
     config: dict[Any, Any] = {}
 
     def __init__(
-        self, middleware: list[type[middleware.BaseTransportMiddleware]] = None
+        self, middleware: list[type[middleware.BaseTransportMiddleware]] | None = None
     ):
         self._connected = False
         super().__init__(middleware=middleware)

src/workflows/transport/pika_transport.py

@@ -63,7 +63,7 @@ class PikaTransport(CommonTransport):
     config: dict[Any, Any] = {}
 
     def __init__(
-        self, middleware: list[type[middleware.BaseTransportMiddleware]] = None
+        self, middleware: list[type[middleware.BaseTransportMiddleware]] | None = None
     ):
         self._channel = None
         self._conn = None

src/workflows/transport/stomp_transport.py

@@ -34,7 +34,7 @@ class StompTransport(CommonTransport):
     config: dict[Any, Any] = {}
 
     def __init__(
-        self, middleware: list[type[middleware.BaseTransportMiddleware]] = None
+        self, middleware: list[type[middleware.BaseTransportMiddleware]] | None = None
     ):
         self._connected = False
         self._namespace = ""