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

include/v8-debug.h

Index: include/v8-debug.h
diff --git a/include/v8-debug.h b/include/v8-debug.h
index 4074b938d2c0ed5d8af5000913c6d9503f9e3cf8..81c9737472031d9792d884d5b2c7bfb6d3132713 100644
--- a/include/v8-debug.h
+++ b/include/v8-debug.h
@@ -259,6 +259,16 @@ class V8_EXPORT Debug {
    * 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);
 };