getBackgroundImage will return None if the image doesn't exist

googlefonts · Nov 9, 2024 · f4a09ae · f4a09ae
1 parent d54b493
commit f4a09ae
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/fontra/core/protocols.py b/src/fontra/core/protocols.py
@@ -97,7 +97,7 @@ async def watchExternalChanges(
 class ReadBackGroundImage(Protocol):
     async def getBackgroundImage(
         self, glyphName: str, layerName: str, imageIdentifier: str
-    ) -> ImageData:
+    ) -> ImageData | None:
         pass