fix: clone of custom types (#804)

src/lib/clone.ts

@@ -1,3 +1,4 @@
+import type { DBCustomType } from './domain';
 import type { Area } from './domain/area';
 import type { DBDependency } from './domain/db-dependency';
 import type { DBField } from './domain/db-field';
@@ -48,6 +49,10 @@ const generateIdsMapFromDiagram = (
         idsMap.set(area.id, generateId());
     });
 
+    diagram.customTypes?.forEach((customType) => {
+        idsMap.set(customType.id, generateId());
+    });
+
     return idsMap;
 };
 
@@ -213,6 +218,22 @@ export const cloneDiagram = (
             })
             .filter((area): area is Area => area !== null) ?? [];
 
+    const customTypes: DBCustomType[] =
+        diagram.customTypes
+            ?.map((customType) => {
+                const id = getNewId(customType.id);
+                if (!id) {
+                    return null;
+                }
+                return {
+                    ...customType,
+                    id,
+                } satisfies DBCustomType;
+            })
+            .filter(
+                (customType): customType is DBCustomType => customType !== null
+            ) ?? [];
+
     return {
         diagram: {
             ...diagram,
@@ -221,6 +242,7 @@ export const cloneDiagram = (
             relationships,
             tables,
             areas,
+            customTypes,
             createdAt: diagram.createdAt
                 ? new Date(diagram.createdAt)
                 : new Date(),