Provide accessor for object internal properties that doesn't require debugger to be active

include/v8-debug.h

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_V8_DEBUG_H_
 #define V8_V8_DEBUG_H_
 
 #include "v8.h"
 
 /**
@@ skipping 242 matching lines @@
    */
   static Local<Context> GetDebugContext();
 
 
   /**
    * Enable/disable LiveEdit functionality for the given Isolate
    * (default Isolate if not provided). V8 will abort if LiveEdit is
    * unexpectedly used. LiveEdit is enabled by default.
    */
   static void SetLiveEditEnabled(Isolate* isolate, bool enable);
+
+  /**
+   * Returns array of internal properties specific to the value type. Result has
+   * the following format: [<name>, <value>,...,<name>, <value>]. Result array
+   * will be allocated in the current context.
+   */
+  static MaybeLocal<Array> GetInternalProperties(Isolate* isolate,
+                                                 Local<Value> value);
 };
 
 
 }  // namespace v8
 
 
 #undef EXPORT
 
 
 #endif  // V8_V8_DEBUG_H_