(imp) fastapi: GraphQLRouter typing

RELEASE.md

@@ -0,0 +1,4 @@
+Release type: patch
+
+This release adjusts the fastapi `GraphQLRouter` typing to redeclare
+`Context` and `RootValue` as generic parameters.

strawberry/fastapi/router.py

@@ -7,6 +7,7 @@
     TYPE_CHECKING,
     Any,
     Callable,
+    Generic,
     Optional,
     Union,
     cast,
@@ -55,6 +56,7 @@ class GraphQLRouter(
         Request, Response, Response, WebSocket, WebSocket, Context, RootValue
     ],
     APIRouter,
+    Generic[Context, RootValue],
 ):
     allow_queries_via_get = True
     request_adapter_class = ASGIRequestAdapter
@@ -66,8 +68,9 @@ async def __get_root_value() -> None:
 
     @staticmethod
     def __get_context_getter(
-        custom_getter: Callable[
-            ..., Union[Optional[CustomContext], Awaitable[Optional[CustomContext]]]
+        custom_getter: Union[
+            Callable[..., Optional[Context]],
+            Callable[..., Awaitable[Optional[Context]]],
         ],
     ) -> Callable[..., Awaitable[CustomContext]]:
         async def dependency(
@@ -125,8 +128,10 @@ def __init__(
         keep_alive_interval: float = 1,
         debug: bool = False,
         root_value_getter: Optional[Callable[[], RootValue]] = None,
-        context_getter: Optional[
-            Callable[..., Union[Optional[Context], Awaitable[Optional[Context]]]]
+        context_getter: Union[
+            None,
+            Callable[..., Optional[Context]],
+            Callable[..., Awaitable[Optional[Context]]],
         ] = None,
         subscription_protocols: Sequence[str] = (
             GRAPHQL_TRANSPORT_WS_PROTOCOL,