Merge branch 'master' into schema-mehek

1 files changed, 1 insertions, 1 deletions

diff --git a/src/client/views/collections/CollectionView.tsx b/src/client/views/collections/CollectionView.tsx
index 51624689e..bc25ad43a 100644
--- a/src/client/views/collections/CollectionView.tsx
+++ b/src/client/views/collections/CollectionView.tsx
@@ -45,7 +45,7 @@ interface CollectionViewProps_ extends FieldViewProps {
 
     // property overrides for child documents
     childDocuments?: Doc[]; // used to override the documents shown by the sub collection to an explicit list (see LinkBox)
-    childDocumentsActive?: () => boolean; // whether child documents can be dragged if collection can be dragged (eg., in a when a Pile document is in startburst mode)
+    childDocumentsActive?: () => boolean | undefined; // whether child documents can be dragged if collection can be dragged (eg., in a when a Pile document is in startburst mode)
     childFitWidth?: (child: Doc) => boolean;
     childShowTitle?: () => string;
     childOpacity?: () => number;