fix: check if keys with validation constraints exist

nestjs · Aug 1, 2023 · 72da365 · 72da365
1 parent 1f95b61
commit 72da365
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/lib/type-helpers/partial-type.helper.ts b/lib/type-helpers/partial-type.helper.ts
@@ -27,9 +27,11 @@ export function PartialType<T>(classRef: Type<T>): Type<Partial<T>> {
     classRef,
     PartialTypeClass
   );
-  keysWithValidationConstraints
-    .filter((key) => !fields.includes(key))
-    .forEach((key) => applyIsOptionalDecorator(PartialTypeClass, key));
+  if (keysWithValidationConstraints) {
+    keysWithValidationConstraints
+      .filter((key) => !fields.includes(key))
+      .forEach((key) => applyIsOptionalDecorator(PartialTypeClass, key));
+  }
 
   inheritTransformationMetadata(classRef, PartialTypeClass);