From 660aa2a7cf3b5771d02114a454555cd9785e759e Mon Sep 17 00:00:00 2001
From: praschke <stel@comfy.monster>
Date: Wed, 16 Aug 2023 11:49:39 +0100
Subject: fix: window.getSelection() can return null on Firefox

---
 ext/js/language/text-scanner.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'ext/js/language')

diff --git a/ext/js/language/text-scanner.js b/ext/js/language/text-scanner.js
index 6fa7a454..af5cc8fe 100644
--- a/ext/js/language/text-scanner.js
+++ b/ext/js/language/text-scanner.js
@@ -145,7 +145,8 @@ class TextScanner extends EventDispatcher {
 
         if (value) {
             this._hookEvents();
-            this._userHasNotSelectedAnythingManually = window.getSelection().isCollapsed;
+            const selection = window.getSelection();
+            this._userHasNotSelectedAnythingManually = (selection === null) ? true : selection.isCollapsed;
         }
     }
 
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