tiny types fix

Author: timfish

module.cc

@@ -65,7 +65,7 @@ using JsStackFrames = std::vector<JsStackFrame>;
 
 struct JsStackTrace {
   // The frames in the stack trace
-  std::vector<JsStackFrame> frames;
+  JsStackFrames frames;
   // JSON serialized string of the async state
   std::string async_state;
 };