lib: remove use of Debug.MakeMirror()

This paves the way for removing `vm.runInDebugContext()`.  Inspection
of Map and Set iterators is now done through V8 instrinsics.

Fixes: https://github.com/nodejs/node/issues/11875
PR-URL: https://github.com/nodejs/node/pull/13295
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Robert Jefe Lindstaedt <robert.lindstaedt@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/node.cc b/src/node.cc
index 111f3b80f2..57c1a4cc8a 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -4288,6 +4288,12 @@ void Init(int* argc,
   const char no_typed_array_heap[] = "--typed_array_max_size_in_heap=0";
   V8::SetFlagsFromString(no_typed_array_heap, sizeof(no_typed_array_heap) - 1);
 
+  // Needed for access to V8 intrinsics.  Disabled again during bootstrapping,
+  // see lib/internal/bootstrap_node.js.
+  const char allow_natives_syntax[] = "--allow_natives_syntax";
+  V8::SetFlagsFromString(allow_natives_syntax,
+                         sizeof(allow_natives_syntax) - 1);
+
   // We should set node_is_initialized here instead of in node::Start,
   // otherwise embedders using node::Init to initialize everything will not be
   // able to set it and native modules will not load for them.