From 98f37a54611136ffc937ad40270d60b733e80456 Mon Sep 17 00:00:00 2001
From: Jukka Kurkela <jukka.kurkela@gmail.com>
Date: Thu, 14 Nov 2024 23:06:54 +0200
Subject: [PATCH] fix: explicit passive: false for wheel events to prevent
 warnings on console

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

diff --git a/src/handlers.js b/src/handlers.js
index 2dfec1c5..f9c195c2 100644
--- a/src/handlers.js
+++ b/src/handlers.js
@@ -22,7 +22,10 @@ function addHandler(chart, target, type, handler) {
   removeHandler(chart, type);
   handlers[type] = (event) => handler(chart, event, options);
   handlers[type].target = target;
-  target.addEventListener(type, handlers[type]);
+
+  // `passive: false` for wheel events, to prevent chrome warnings. Use default value for other events.
+  const passive = type === 'wheel' ? false : undefined;
+  target.addEventListener(type, handlers[type], {passive});
 }
 
 export function mouseMove(chart, event) {