From 4e2516d12ab3fdf13c46b7acaed2e79efa6ca044 Mon Sep 17 00:00:00 2001
From: Leon Sorokin <leeoniya@gmail.com>
Date: Fri, 27 Aug 2021 12:40:33 -0500
Subject: [PATCH] GraphNG: fix crash when trying to diff missing timeRange prop
 (#38654)

---
 packages/grafana-ui/src/components/uPlot/Plot.tsx | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/grafana-ui/src/components/uPlot/Plot.tsx b/packages/grafana-ui/src/components/uPlot/Plot.tsx
index 5ae2fa1f638..49d13b7f61f 100755
--- a/packages/grafana-ui/src/components/uPlot/Plot.tsx
+++ b/packages/grafana-ui/src/components/uPlot/Plot.tsx
@@ -19,7 +19,11 @@ function sameConfig(prevProps: PlotProps, nextProps: PlotProps) {
 function sameTimeRange(prevProps: PlotProps, nextProps: PlotProps) {
   let prevTime = prevProps.timeRange;
   let nextTime = nextProps.timeRange;
-  return nextTime.from.valueOf() === prevTime.from.valueOf() && nextTime.to.valueOf() === prevTime.to.valueOf();
+
+  return (
+    prevTime === nextTime ||
+    (nextTime.from.valueOf() === prevTime.from.valueOf() && nextTime.to.valueOf() === prevTime.to.valueOf())
+  );
 }
 
 type UPlotChartState = {