Fix: Handle potential undefined values in LDAP query builder and database queries.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 705f2157-ef97-4fbd-89e4-8c7f2ecaea90
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/7ed01c5f-a82d-405a-b728-b2e3d127c60c/e6f1810b-5d83-4907-ac49-d7d4e6aaf193.jpg

client/src/pages/ldap-query-builder-page.tsx

@@ -80,28 +80,28 @@ const LdapQueryBuilderPage = () => {
 
   // Query to get LDAP connections
   const { 
-    data: connections,
+    data: connections = [],
     isLoading: connectionsLoading 
-  } = useQuery({
+  } = useQuery<LdapConnection[]>({
     queryKey: ["/api/ldap-connections"],
     enabled: !!user
   });
 
   // Query to get LDAP filters for the selected connection
   const { 
-    data: filters,
+    data: filters = [],
     isLoading: filtersLoading 
-  } = useQuery({
+  } = useQuery<LdapFilter[]>({
     queryKey: ["/api/connections", selectedConnectionId, "ldap-filters"],
     enabled: !!selectedConnectionId,
   });
 
   // Query to get LDAP filter revisions
   const { 
-    data: revisions,
+    data: revisions = [],
     isLoading: revisionsLoading,
     refetch: refetchRevisions
-  } = useQuery({
+  } = useQuery<LdapFilterRevision[]>({
     queryKey: ["/api/ldap-filters", selectedFilter?.id, "revisions"],
     enabled: !!selectedFilter?.id && showRevisionsDialog,
   });