From c4cc20882cc2b6eff9a1a303977316dc3cea6311 Mon Sep 17 00:00:00 2001
From: zk-phi <zk-phi@users.noreply.github.com>
Date: Mon, 24 Jun 2024 20:22:30 +0900
Subject: [PATCH] Fix palette

---
 src/gifworker.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/gifworker.ts b/src/gifworker.ts
index 2c8cb92f..68113239 100644
--- a/src/gifworker.ts
+++ b/src/gifworker.ts
@@ -49,7 +49,7 @@ ctx.addEventListener("message", (msg) => {
       palette.pop();
     }
     const colorFinder = genColorFinder(palette);
-    const transparentIndex = palette.length;
+    const transparentIndex = palette.length; // entry will be added later
     frames.forEach((frame, frameIx) => {
       // dither and binarize transparency first
       if (transparent) {
@@ -65,7 +65,7 @@ ctx.addEventListener("message", (msg) => {
         }
       }
       encoder.writeFrame(indexed, width, height, {
-        palette: frameIx === 0 ? palette : undefined,
+        palette: frameIx === 0 ? (transparent ? [...palette, [0, 0, 0]] : palette) : undefined,
         delay,
         transparent,
         transparentIndex,