Expand protocol allowlist to match CPythons

Author: JanEricNitschke

src/test_typing_extensions.py

@@ -11,6 +11,7 @@
 import io
 import itertools
 import pickle
+import os
 import re
 import subprocess
 import sys
@@ -3869,9 +3870,15 @@ def test_builtin_protocol_allowlist(self):
             class CustomProtocol(TestCase, Protocol):
                 pass
 
+        class CustomPathLikeProtocol(os.PathLike, Protocol):
+            pass
+
         class CustomContextManager(typing.ContextManager, Protocol):
             pass
 
+        class CustomAsyncIterator(typing.AsyncIterator, Protocol):
+            pass
+
     @skip_if_py312b1
     def test_typing_extensions_protocol_allowlist(self):
         @runtime_checkable

src/typing_extensions.py

@@ -614,10 +614,12 @@ def __getitem__(self, params):
 _PROTO_ALLOWLIST = {
     'collections.abc': [
         'Callable', 'Awaitable', 'Iterable', 'Iterator', 'AsyncIterable',
-        'Hashable', 'Sized', 'Container', 'Collection', 'Reversible', 'Buffer',
+        'AsyncIterator','Hashable', 'Sized', 'Container', 'Collection',
+        'Reversible', 'Buffer'
     ],
     'contextlib': ['AbstractContextManager', 'AbstractAsyncContextManager'],
     'typing_extensions': ['Buffer'],
+    'os': ['PathLike'],
 }