Add arg length check

Polymer · Feb 14, 2019 · 6139e88 · 6139e88
1 parent 52a559f
commit 6139e88
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/mixins/property-effects.js b/lib/mixins/property-effects.js
@@ -2226,7 +2226,7 @@ export const PropertyEffects = dedupingMixin(superClass => {
         }
         // When the `legacyUndefined` flag is enabled, pass a no-op value
         // so that the observer, computed property, or compound binding is aborted.
-        if (legacyUndefined && value === undefined) {
+        if (legacyUndefined && value === undefined && args.length > 1) {
           return NOOP;
         }
         values[i] = value;