diff --git a/stubs/frozendict.pyi b/stubs/frozendict.pyi
new file mode 100644
index 0000000000..3f3af59f26
--- /dev/null
+++ b/stubs/frozendict.pyi
@@ -0,0 +1,47 @@
+# -*- coding: utf-8 -*-
+# Copyright 2020 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Stub for frozendict.
+
+from typing import (
+ Any,
+ Hashable,
+ Iterable,
+ Iterator,
+ Mapping,
+ overload,
+ Tuple,
+ TypeVar,
+)
+
+_KT = TypeVar("_KT", bound=Hashable) # Key type.
+_VT = TypeVar("_VT") # Value type.
+
+class frozendict(Mapping[_KT, _VT]):
+ @overload
+ def __init__(self, **kwargs: _VT) -> None: ...
+ @overload
+ def __init__(self, __map: Mapping[_KT, _VT], **kwargs: _VT) -> None: ...
+ @overload
+ def __init__(
+ self, __iterable: Iterable[Tuple[_KT, _VT]], **kwargs: _VT
+ ) -> None: ...
+ def __getitem__(self, key: _KT) -> _VT: ...
+ def __contains__(self, key: Any) -> bool: ...
+ def copy(self, **add_or_replace: Any) -> frozendict: ...
+ def __iter__(self) -> Iterator[_KT]: ...
+ def __len__(self) -> int: ...
+ def __repr__(self) -> str: ...
+ def __hash__(self) -> int: ...
|
