From ae309ee18a4a0eebee20d97a7f9d942738459c21 Mon Sep 17 00:00:00 2001
From: voltrexmaster <mohammadkeyvanzade94@gmail.com>
Date: Tue, 28 Sep 2021 21:41:56 -0700
Subject: [PATCH] lib: make structuredClone spec compliant
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Fixes: https://github.com/nodejs/node/issues/40246

PR-URL: https://github.com/nodejs/node/pull/40251
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
---
 lib/internal/structured_clone.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 lib/internal/structured_clone.js

diff --git a/lib/internal/structured_clone.js b/lib/internal/structured_clone.js
new file mode 100644
index 00000000000000..2ee9517284ab6e
--- /dev/null
+++ b/lib/internal/structured_clone.js
@@ -0,0 +1,21 @@
+'use strict';
+
+const {
+  MessageChannel,
+  receiveMessageOnPort,
+} = require('internal/worker/io');
+
+let channel;
+function structuredClone(value, options = undefined) {
+  // TODO: Improve this with a more efficient solution that avoids
+  // instantiating a MessageChannel
+  channel ??= new MessageChannel();
+  channel.port1.unref();
+  channel.port2.unref();
+  channel.port1.postMessage(value, options?.transfer);
+  return receiveMessageOnPort(channel.port2).message;
+}
+
+module.exports = {
+  structuredClone
+};