worker: allow passing JS wrapper objects via postMessage

Enable JS wrapper objects to be used as transferable or cloneable
objects in `postMessage()` calls, by having them extend a C++-backed
class.

This requires a few internal changes:
- This commit adds the possibility for transferred objects to
  read/write JS values at the end of the serialization/deserialization
  phases.
- This commit adds the possibility for transferred objects to list
  sub-transferables, e.g. typically the public JS wrapper class
  would list its C++ handle in there.
- This commit adds usage of `BaseObject` in a few more places, because
  now during deserialization weakly held objects can also be involved,
  in addition to `MessagePort`s.

PR-URL: https://github.com/nodejs/node/pull/33772
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/node_errors.h b/src/node_errors.h
index 01a8d8e75ac..d61c268dea9 100644
--- a/src/node_errors.h
+++ b/src/node_errors.h
@@ -93,7 +93,8 @@ void OnFatalError(const char* location, const char* message);
   V(ERR_MEMORY_ALLOCATION_FAILED, "Failed to allocate memory")                 \
   V(ERR_OSSL_EVP_INVALID_DIGEST, "Invalid digest used")                        \
   V(ERR_MISSING_MESSAGE_PORT_IN_TRANSFER_LIST,                                 \
-    "MessagePort was found in message but not listed in transferList")         \
+    "Object that needs transfer was found in message but not listed "          \
+    "in transferList")                                                         \
   V(ERR_MISSING_PLATFORM_FOR_WORKER,                                           \
     "The V8 platform used by this instance of Node does not support "          \
     "creating Workers")                                                        \