Calling a generator function returns a generator object

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index c01390c4aa878c165b3c3299f1e3ad37f7d4451a..cd5bbf40abad07a12afa5e6f45f359bbe8dc2908 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -1290,6 +1290,10 @@ void JSObject::JSObjectShortPrint(StringStream* accumulator) {
       }
       break;
     }
+    case JS_GENERATOR_OBJECT_TYPE: {
+      accumulator->Add("<JS Generator>");
+      break;
+    }
     case JS_MODULE_TYPE: {
       accumulator->Add("<JS Module>");
       break;
@@ -1546,6 +1550,7 @@ void HeapObject::IterateBody(InstanceType type, int object_size,
       break;
     case JS_OBJECT_TYPE:
     case JS_CONTEXT_EXTENSION_OBJECT_TYPE:
+    case JS_GENERATOR_OBJECT_TYPE:
     case JS_MODULE_TYPE:
     case JS_VALUE_TYPE:
     case JS_DATE_TYPE: