1 files changed, 11 insertions, 0 deletions

diff --git a/viewer/src/services/itemGuards.ts b/viewer/src/services/itemGuards.ts
new file mode 100644
index 0000000..114c2d9
--- /dev/null
+++ b/viewer/src/services/itemGuards.ts
@@ -0,0 +1,11 @@
+import { DirectoryItem, DownloadableItem, Item } from '@/@types/gallery';
+import { ItemType } from '@/@types/itemType';
+
+export function isDirectory(item: Item | null): item is DirectoryItem {
+  return item?.properties.type === ItemType.DIRECTORY;
+}
+
+export function isDownloadableItem(item: Item | null): item is DownloadableItem {
+  if (!item?.properties) return false;
+  return 'resource' in item.properties;
+}