From 7f3835eff242283d78436740a6c4f9703aa22d39 Mon Sep 17 00:00:00 2001
From: Rick C <4494839+rickdoesdev@users.noreply.github.com>
Date: Fri, 23 Aug 2024 19:04:09 +1000
Subject: [PATCH] fix: codeSource.firstChild is null

Uncaught (in promise) TypeError: codeSource.firstChild is null

make sure object reference is not null before we try to use it.
---
 src/background/background.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/background/background.js b/src/background/background.js
index 32b7138..b419d1b 100644
--- a/src/background/background.js
+++ b/src/background/background.js
@@ -722,7 +722,7 @@ async function getArticleFromDom(domString) {
 
   dom.body.querySelectorAll('[class*=highlight-text],[class*=highlight-source]')?.forEach(codeSource => {
     const language = codeSource.className.match(/highlight-(?:text|source)-([a-z0-9]+)/)?.[1]
-    if (codeSource.firstChild.nodeName == "PRE") {
+    if (codeSource.firstChild && codeSource.firstChild.nodeName == "PRE") {
       codeSource.firstChild.id = `code-lang-${language}`
     }
   });
@@ -738,7 +738,7 @@ async function getArticleFromDom(domString) {
   });
 
   dom.body.querySelectorAll('.codehilite > pre')?.forEach(codeSource => {
-    if (codeSource.firstChild.nodeName !== 'CODE' && !codeSource.className.includes('language')) {
+    if (codeSource.firstChild && codeSource.firstChild.nodeName !== 'CODE' && !codeSource.className.includes('language')) {
       codeSource.id = `code-lang-text`;
     }
   });