From 3c36b18ac17b292f0cc56897df093362bea555d1 Mon Sep 17 00:00:00 2001
From: Tanner Linsley <tannerlinsley@gmail.com>
Date: Thu, 26 Jan 2023 14:19:09 -0700
Subject: [PATCH] fix: tooltip secondary axis stable sort

---
 src/components/Chart.tsx | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/components/Chart.tsx b/src/components/Chart.tsx
index 777ad638..5590368e 100644
--- a/src/components/Chart.tsx
+++ b/src/components/Chart.tsx
@@ -796,6 +796,12 @@ function sortDatumsBySecondaryPx<TDatum>(
     const bPx =
       bAxis?.scale(bAxis.stacked ? b.stackData?.[1] : b.secondaryValue) ?? NaN
 
-    return aPx - bPx
+    return aPx > bPx
+      ? 1
+      : aPx < bPx
+      ? -1
+      : a.seriesIndex > b.seriesIndex
+      ? 1
+      : -1
   })
 }