Index: sky/framework/fn.dart |
diff --git a/sky/framework/fn.dart b/sky/framework/fn.dart |
index 906b7078ae63ad1ed24338ed68a8d2f8c7b9b151..3bc9dbbfcc55561ad643c1b9d3db9744cfbbd9ca 100644 |
--- a/sky/framework/fn.dart |
+++ b/sky/framework/fn.dart |
@@ -358,7 +358,8 @@ abstract class SkyElementWrapper extends SkyNodeWrapper { |
if (!idSet.add(child._key)) { |
throw '''If multiple (non-Text) nodes of the same type exist as children |
- of another node, they must have unique keys.'''; |
+ of another node, they must have unique keys. |
+ Duplicate: "${child._key}"'''; |
} |
} |
return false; |