ES6 Unscopables

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index f702166cd4d281965f2caba33a616888eb7cb0fb..6b1d8929248df22fe2d4105cd932b5215da98507 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -889,6 +889,11 @@ struct Maybe {
   Maybe() : has_value(false) {}
   explicit Maybe(T t) : has_value(true), value(t) {}
   Maybe(bool has, T t) : has_value(has), value(t) {}
+  bool ToValue(T* t) {

[rossberg, 2014/08/06 09:53:02]

Can we not introduce this? Maybe intentionally is a simple struct, using this
method actually makes code more verbose and less readable.

[arv (Not doing code reviews), 2014/08/06 15:08:28]

Reverted this.

+    if (!has_value) return false;
+    *t = value;
+    return true;
+  }
 
   bool has_value;
   T value;