fix: properly type extensions in GraphQLFormattedError

Replicates graphql/graphql-js@3f49961e

Author: Cito

docs/conf.py

@@ -148,6 +148,7 @@
 FormattedSourceLocation
 GraphQLAbstractType
 GraphQLErrorExtensions
+GraphQLFormattedErrorExtensions
 GraphQLOutputType
 asyncio.events.AbstractEventLoop
 graphql.execution.map_async_iterator.MapAsyncIterator

src/graphql/__init__.py

@@ -48,6 +48,7 @@
     GraphQLError,
     GraphQLErrorExtensions,
     GraphQLFormattedError,
+    GraphQLFormattedErrorExtensions,
     GraphQLSyntaxError,
     located_error,
 )
@@ -748,6 +749,7 @@
     "GraphQLError",
     "GraphQLErrorExtensions",
     "GraphQLFormattedError",
+    "GraphQLFormattedErrorExtensions",
     "GraphQLSyntaxError",
     "located_error",
     "get_introspection_query",

src/graphql/error/__init__.py

@@ -4,7 +4,12 @@
 errors.
 """
 
-from .graphql_error import GraphQLError, GraphQLErrorExtensions, GraphQLFormattedError
+from .graphql_error import (
+    GraphQLError,
+    GraphQLErrorExtensions,
+    GraphQLFormattedError,
+    GraphQLFormattedErrorExtensions,
+)
 
 from .syntax_error import GraphQLSyntaxError
 
@@ -14,6 +19,7 @@
     "GraphQLError",
     "GraphQLErrorExtensions",
     "GraphQLFormattedError",
+    "GraphQLFormattedErrorExtensions",
     "GraphQLSyntaxError",
     "located_error",
 ]

src/graphql/error/graphql_error.py

@@ -14,7 +14,12 @@
     )  # noqa: F401
     from ..language.source import Source  # noqa: F401
 
-__all__ = ["GraphQLError", "GraphQLErrorExtensions", "GraphQLFormattedError"]
+__all__ = [
+    "GraphQLError",
+    "GraphQLErrorExtensions",
+    "GraphQLFormattedError",
+    "GraphQLFormattedErrorExtensions",
+]
 
 
 # Custom extensions
@@ -25,6 +30,14 @@
 # a dictionary which can contain all the values you need.
 
 
+# Custom formatted extensions
+GraphQLFormattedErrorExtensions = Dict[str, Any]
+# Use a unique identifier name for your extension, for example the name of
+# your library or project. Do not use a shortened identifier as this increases
+# the risk of conflicts. We recommend you add at most one extension key,
+# a dictionary which can contain all the values you need.
+
+
 class GraphQLFormattedError(TypedDict, total=False):
     """Formatted GraphQL error"""
 
@@ -41,7 +54,7 @@ class GraphQLFormattedError(TypedDict, total=False):
     path: List[Union[str, int]]
     # Reserved for implementors to extend the protocol however they see fit,
     # and hence there are no additional restrictions on its contents.
-    extensions: GraphQLErrorExtensions
+    extensions: GraphQLFormattedErrorExtensions
 
 
 class GraphQLError(Exception):