From c7a0bab4322ba7d3112a08c4c4c3c414e9747a0c Mon Sep 17 00:00:00 2001
From: Owen Healy <owen@owenehealy.com>
Date: Thu, 1 May 2025 23:50:10 -0400
Subject: [PATCH 1/2] Restore nearest behavior

---
 src/SixelEncoder.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SixelEncoder.ts b/src/SixelEncoder.ts
index 71addf1..8ac5e2a 100644
--- a/src/SixelEncoder.ts
+++ b/src/SixelEncoder.ts
@@ -91,7 +91,7 @@ function processBand(
       // skip expensive color to palette matching if we have same color as before
       if (color !== oldColor) {
         oldColor = color;
-        idx = alpha(color) ? colorMap.get(color) || 0 : 0;
+        idx = alpha(color) ? colorMap.get(color) : 0;
         if (idx === undefined) {
           idx = nearestColorIndex(color, paletteRGB) + 1;
           colorMap.set(color, idx);

From 78876a12f3911500752abb68e542ba7d5ea21f94 Mon Sep 17 00:00:00 2001
From: Owen Healy <owen@owenehealy.com>
Date: Fri, 2 May 2025 08:23:24 -0400
Subject: [PATCH 2/2] Fix type error

---
 src/SixelEncoder.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/SixelEncoder.ts b/src/SixelEncoder.ts
index 8ac5e2a..415922e 100644
--- a/src/SixelEncoder.ts
+++ b/src/SixelEncoder.ts
@@ -91,11 +91,14 @@ function processBand(
       // skip expensive color to palette matching if we have same color as before
       if (color !== oldColor) {
         oldColor = color;
-        idx = alpha(color) ? colorMap.get(color) : 0;
-        if (idx === undefined) {
+        let maybeIDX = alpha(color) ? colorMap.get(color) : 0;
+        if (maybeIDX === undefined) {
           idx = nearestColorIndex(color, paletteRGB) + 1;
           colorMap.set(color, idx);
         }
+        else {
+          idx = maybeIDX;
+        }
         // extend accu/code handling to new color
         if (slots[idx] === -1) {
           targets.push([]);