From 040d98458afd2ff80d1b14b7cd610e76e820f5fd Mon Sep 17 00:00:00 2001
From: Trevor Manz <trevor.j.manz@gmail.com>
Date: Tue, 20 Feb 2024 12:29:00 -0500
Subject: [PATCH] fix: Fallback to format=1 if not format for sample index

---
 src/geotiffimage.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/geotiffimage.js b/src/geotiffimage.js
index aff618ca..7ece4055 100644
--- a/src/geotiffimage.js
+++ b/src/geotiffimage.js
@@ -295,8 +295,7 @@ class GeoTIFFImage {
   }
 
   getReaderForSample(sampleIndex) {
-    const format = this.fileDirectory.SampleFormat
-      ? this.fileDirectory.SampleFormat[sampleIndex] : 1;
+    const format = this.fileDirectory.SampleFormat?.[sampleIndex] ?? 1;
     const bitsPerSample = this.fileDirectory.BitsPerSample[sampleIndex];
     switch (format) {
       case 1: // unsigned integer data