util: correctly inspect Map/Set Iterators

Previously, a MapIterator or SetIterator would
not be inspected properly. This change makes it possible
to inspect them by creating a Debug Mirror and previewing
the iterators to not consume the actual iterator that
we are trying to inspect.

This change also adds a node_util binding that uses
v8's Value::IsSetIterator and Value::IsMapIterator
to verify that the values passed in are actual iterators.

Fixes: https://github.com/nodejs/node/issues/3107
PR-URL: https://github.com/nodejs/node/pull/3119
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

1 files changed, 1 insertions, 0 deletions

diff --git a/node.gyp b/node.gyp
index 9575f4cbcd..ece9eeec2c 100644
--- a/node.gyp
+++ b/node.gyp
@@ -115,6 +115,7 @@
         'src/node_javascript.cc',
         'src/node_main.cc',
         'src/node_os.cc',
+        'src/node_util.cc',
         'src/node_v8.cc',
         'src/node_stat_watcher.cc',
         'src/node_watchdog.cc',