From f0428d79ca2936548526a97514360d0c0a495a73 Mon Sep 17 00:00:00 2001
From: Leon Scherer <55341374+Fruup@users.noreply.github.com>
Date: Sun, 2 Feb 2025 02:11:01 +0100
Subject: [PATCH] fix: sending invalid index to opencv

---
 src/jscanify.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/jscanify.js b/src/jscanify.js
index 53a3c19..bd3a16c 100644
--- a/src/jscanify.js
+++ b/src/jscanify.js
@@ -71,7 +71,10 @@
         }
       }
 
-      const maxContour = contours.get(maxContourIndex);
+      const maxContour =
+        maxContourIndex >= 0 ?
+          contours.get(maxContourIndex) :
+          null;
 
       imgGray.delete();
       imgBlur.delete();