Update packages/td-tools/src/thing-model-helpers.ts

Co-authored-by: Jan Romann <[email protected]>
danielpeintner · Sep 12, 2023 · d1f6ee6 · d1f6ee6
1 parent 58198a2
commit d1f6ee6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/td-tools/src/thing-model-helpers.ts b/packages/td-tools/src/thing-model-helpers.ts
@@ -508,7 +508,7 @@ export class ThingModelHelpers {
                 extendedModel.properties = {};
             }
             for (const key in properties) {
-                if (dest.properties && dest.properties[key] !== undefined) {
+                if (dest?.properties[key] !== undefined) {
                     extendedModel.properties[key] = { ...properties[key], ...dest.properties[key] };
                 } else {
                     extendedModel.properties[key] = properties[key];