From 455cf1743f70cb12025e36b3c4eb9a213fe77199 Mon Sep 17 00:00:00 2001
From: Satya Rohith <me@satyarohith.com>
Date: Mon, 29 Apr 2024 14:23:54 +0530
Subject: fix(ext/node): add support for MessagePort.removeListener/off
 (#23598)

Closes https://github.com/denoland/deno/issues/23564
---
 ext/web/13_message_port.js | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'ext/web')

diff --git a/ext/web/13_message_port.js b/ext/web/13_message_port.js
index 4e4184f2a..93145e8f7 100644
--- a/ext/web/13_message_port.js
+++ b/ext/web/13_message_port.js
@@ -190,6 +190,11 @@ class MessagePort extends EventTarget {
       this[_enabled] = true;
       while (true) {
         if (this[_id] === null) break;
+        // Exit if no message event listeners are present in Node compat mode.
+        if (
+          typeof this[nodeWorkerThreadCloseCb] == "function" &&
+          messageEventListenerCount === 0
+        ) break;
         let data;
         try {
           data = await op_message_port_recv_message(
-- 
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