1 files changed, 7 insertions, 0 deletions
diff --git a/fxjs/js_define.cpp b/fxjs/js_define.cpp
index 0a18b6d15b..54bd8e1c3a 100644
--- a/fxjs/js_define.cpp
+++ b/fxjs/js_define.cpp
@@ -313,3 +313,10 @@ std::vector<v8::Local<v8::Value>> ExpandKeywordParams(
 
   return result;
 }
+
+bool IsExpandedParamKnown(v8::Local<v8::Value> value) {
+  return !value.IsEmpty() &&
+         (value->IsString() || value->IsNumber() || value->IsBoolean() ||
+          value->IsDate() || value->IsObject() || value->IsNull() ||
+          value->IsUndefined());
+}