From 4b8993c1a5b86be419463c2b6123fdb5aac8338d Mon Sep 17 00:00:00 2001
From: "Grot (@grafanabot)" <43478413+grafanabot@users.noreply.github.com>
Date: Fri, 22 Oct 2021 02:34:45 +0100
Subject: [PATCH] Stat: Fixes an issue that could lead to browser crash with
 specific values (#40777) (#40789)

(cherry picked from commit 80b4ef820a59543293600757526cce5b8f21e39b)

Co-authored-by: Leon Sorokin <leeoniya@gmail.com>
---
 .../grafana-ui/src/components/Sparkline/Sparkline.tsx    | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/packages/grafana-ui/src/components/Sparkline/Sparkline.tsx b/packages/grafana-ui/src/components/Sparkline/Sparkline.tsx
index d089d949227..90f7aa89935 100755
--- a/packages/grafana-ui/src/components/Sparkline/Sparkline.tsx
+++ b/packages/grafana-ui/src/components/Sparkline/Sparkline.tsx
@@ -92,6 +92,15 @@ export class Sparkline extends PureComponent<SparklineProps, State> {
   getYRange(field: Field) {
     let { min, max } = this.state.alignedDataFrame.fields[1].state?.range!;
 
+    if (min === max) {
+      if (min === 0) {
+        max = 100;
+      } else {
+        min = 0;
+        max! *= 2;
+      }
+    }
+
     return [
       Math.max(min!, field.config.min ?? -Infinity),
       Math.min(max!, field.config.max ?? Infinity),