From 6929d8f51f39fcfe679fb0205bd264cca06ed81d Mon Sep 17 00:00:00 2001
From: M1 <m1-pro@M1s-MacBook-Pro.local>
Date: Tue, 17 Mar 2026 07:35:54 +0400
Subject: [PATCH] fix: atomic SVG replaceWith() on sparkline update, no
 empty-frame bounce

---
 apps/web/src/views/home.ejs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/apps/web/src/views/home.ejs b/apps/web/src/views/home.ejs
index a39b435..32303cc 100644
--- a/apps/web/src/views/home.ejs
+++ b/apps/web/src/views/home.ejs
@@ -95,7 +95,14 @@
       _fetchingSparkline.add(ping.monitor_id);
       try {
         const res = await fetch(`/dashboard/monitors/${ping.monitor_id}/sparkline`, { credentials: 'same-origin' });
-        if (res.ok) sparkEl.innerHTML = await res.text();
+        if (res.ok) {
+          const tmp = document.createElement('div');
+          tmp.innerHTML = await res.text();
+          const newSvg = tmp.firstElementChild;
+          const oldSvg = sparkEl.querySelector('svg');
+          if (newSvg && oldSvg) oldSvg.replaceWith(newSvg);
+          else if (newSvg) sparkEl.appendChild(newSvg);
+        }
       } catch {}
       _fetchingSparkline.delete(ping.monitor_id);
     });