From 9c75871a8152f03d73ec52fc49c3e65a91a78d1e Mon Sep 17 00:00:00 2001
From: Blake Friedman <blakef@meta.com>
Date: Mon, 5 Dec 2022 06:26:09 -0800
Subject: [PATCH] Fix abnormal close JS exception

Summary:
D40660765 (https://github.com/facebook/react-native/commit/3982a2c6bd116a6dcc6ee6889e4a246b710b70a7) introduced extra logging for abnormal closes. The websocked 'close' event may not be called with the event argument.

Changelog: [Internal] - Fix for undefined websocket close

Reviewed By: jacdebug, cortinico

Differential Revision: D41731339

fbshipit-source-id: 92b28dcc0d55d0e9e32b4f4321f325fb3471edcd
---
 Libraries/Utilities/HMRClient.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Libraries/Utilities/HMRClient.js b/Libraries/Utilities/HMRClient.js
index b37f5961d2e0b3..dd15332779143b 100644
--- a/Libraries/Utilities/HMRClient.js
+++ b/Libraries/Utilities/HMRClient.js
@@ -247,6 +247,7 @@ Error: ${e.message}`;
       // https://www.rfc-editor.org/rfc/rfc6455.html#section-7.4.1
       // https://www.rfc-editor.org/rfc/rfc6455.html#section-7.1.5
       const isNormalOrUnsetCloseReason =
+        closeEvent == null ||
         closeEvent.code === 1000 ||
         closeEvent.code === 1005 ||
         closeEvent.code == null;