From e48ab10464dada488ed75fe963be93090ec50fad Mon Sep 17 00:00:00 2001
From: Grzegorz Bokota <bokota+github@gmail.com>
Date: Wed, 11 Sep 2024 03:46:59 +0200
Subject: [PATCH] Change type of layer Metadata from Dict to Mapping (#357)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Draga Doncila Pop <17995243+DragaDoncila@users.noreply.github.com>
---
 src/npe2/types.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/npe2/types.py b/src/npe2/types.py
index 3f649005..da7e72ba 100644
--- a/src/npe2/types.py
+++ b/src/npe2/types.py
@@ -1,7 +1,7 @@
+from collections.abc import Mapping
 from typing import (
     TYPE_CHECKING,
     Callable,
-    Dict,
     List,
     Literal,
     NewType,
@@ -48,7 +48,7 @@ def __array__(self) -> "np.ndarray":
 LayerName = Literal[
     "graph", "image", "labels", "points", "shapes", "surface", "tracks", "vectors"
 ]
-Metadata = Dict
+Metadata = Mapping
 DataType = Union[ArrayLike, Sequence[ArrayLike]]
 FullLayerData = Tuple[DataType, Metadata, LayerName]
 LayerData = Union[Tuple[DataType], Tuple[DataType, Metadata], FullLayerData]