From 050a77d8e31f4fc161f29e89a9cfc54015bb8d88 Mon Sep 17 00:00:00 2001
From: Alex Waygood <Alex.Waygood@Gmail.com>
Date: Fri, 3 Dec 2021 12:33:44 +0000
Subject: [PATCH] Make `NewType` a class in 3.10 (#6469)

---
 stdlib/typing.pyi | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/stdlib/typing.pyi b/stdlib/typing.pyi
index f27f87a06..a56ea8c8c 100644
--- a/stdlib/typing.pyi
+++ b/stdlib/typing.pyi
@@ -83,6 +83,15 @@ if sys.version_info >= (3, 10):
     Concatenate: _SpecialForm = ...
     TypeAlias: _SpecialForm = ...
     TypeGuard: _SpecialForm = ...
+    class NewType:
+        def __init__(self, name: str, tp: type) -> None: ...
+        def __call__(self, x: _T) -> _T: ...
+        def __or__(self, other: Any) -> _SpecialForm: ...
+        def __ror__(self, other: Any) -> _SpecialForm: ...
+        __supertype__: type
+
+else:
+    def NewType(name: str, tp: Type[_T]) -> Type[_T]: ...
 
 # These type variables are used by the container types.
 _S = TypeVar("_S")
@@ -699,8 +708,6 @@ class _TypedDict(Mapping[str, object], metaclass=ABCMeta):
     def __or__(self: _T, __value: _T) -> _T: ...
     def __ior__(self: _T, __value: _T) -> _T: ...
 
-def NewType(name: str, tp: Type[_T]) -> Type[_T]: ...
-
 # This itself is only available during type checking
 def type_check_only(func_or_cls: _F) -> _F: ...