Improve BaseSerializer and ListSerializer method to_representation() (#509)

* Fix `BaseSerializer` and `ListSerializer` `to_representation()` return type
* Fixed allowlist entry

Author: intgr

rest_framework-stubs/serializers.pyi

@@ -113,7 +113,7 @@ class BaseSerializer(Generic[_IN], Field[Any, Any, Any, _IN]):
     def update(self, instance: _IN, validated_data: Any) -> _IN: ...
     def create(self, validated_data: Any) -> _IN: ...
     def save(self, **kwargs: Any) -> _IN: ...
-    def to_representation(self, instance: _IN) -> dict[str, Any]: ...
+    def to_representation(self, instance: _IN) -> Any: ...
 
 class SerializerMetaclass(type):
     def __new__(cls, name: Any, bases: Any, attrs: Any) -> Incomplete: ...
@@ -132,6 +132,7 @@ class Serializer(
     @cached_property
     def fields(self) -> BindingDict: ...
     def get_fields(self) -> dict[str, Field]: ...
+    def to_representation(self, instance: _IN) -> dict[str, Any]: ...
     def validate(self, attrs: Any) -> Any: ...
     def __iter__(self) -> Iterator[BoundField]: ...
     def __getitem__(self, key: str) -> BoundField: ...
@@ -175,6 +176,7 @@ class ListSerializer(
         min_length: int | None = ...,
         max_length: int | None = ...,
     ) -> None: ...
+    def to_representation(self, data: Manager[Any] | Iterable[Any]) -> list[Any]: ...  # type: ignore[override]
     def get_initial(self) -> list[Mapping[Any, Any]]: ...
     def validate(self, attrs: Any) -> Any: ...
     @property

scripts/stubtest/allowlist_todo.txt

@@ -94,7 +94,6 @@ rest_framework.serializers.HyperlinkedRelatedField.get_object
 rest_framework.serializers.ListField.initial
 rest_framework.serializers.ListField.to_representation
 rest_framework.serializers.ListSerializer.is_valid
-rest_framework.serializers.ListSerializer.to_representation
 rest_framework.serializers.ManyRelatedField.initial
 rest_framework.serializers.ManyRelatedField.to_representation
 rest_framework.serializers.MethodNotAllowed