From dea3b29946a5ccf7a2c12d012b7b8abf7352107a Mon Sep 17 00:00:00 2001
From: Coltin Kifer <coltinkifer19@gmail.com>
Date: Tue, 7 May 2024 22:44:14 -0700
Subject: [PATCH] fix: guard against accidental undefined access in Brush
 (#4504)

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## Description

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Fix brush bug experienced in current release, guard against it in 3.x
too

## Related Issue

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<!--- If suggesting a new feature or change, please discuss it in an
issue first -->
<!--- If fixing a bug, there should be an issue describing it with steps
to reproduce -->
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This is interesting... not sure why people use Brush like this? Asked
for a reason in the comment
https://github.com/recharts/recharts/issues/2093#issuecomment-2098161840

## Motivation and Context

<!--- Why is this change required? What problem does it solve? -->
bug prevention

## How Has This Been Tested?

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to -->
<!--- see how your change affects other areas of the code, etc. -->
it hasn't really, but it doesn't hurt anything

## Screenshots (if appropriate):

## Types of changes

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the boxes that apply: -->

- [X] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)

## Checklist:

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that apply. -->
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- [ ] My change requires a change to the documentation.
- [ ] I have updated the documentation accordingly.
- [ ] I have added tests to cover my changes.
- [ ] I have added a storybook story or extended an existing story to
show my changes

Co-authored-by: Coltin Kifer <ckifer@amazon.com>
---
 src/cartesian/Brush.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/cartesian/Brush.tsx b/src/cartesian/Brush.tsx
index 2f563b7afd..9bf625df40 100644
--- a/src/cartesian/Brush.tsx
+++ b/src/cartesian/Brush.tsx
@@ -134,7 +134,7 @@ function TravellerLayer({
     height,
   };
 
-  const ariaLabelBrush = ariaLabel || `Min value: ${data[startIndex].name}, Max value: ${data[endIndex].name}`;
+  const ariaLabelBrush = ariaLabel || `Min value: ${data[startIndex]?.name}, Max value: ${data[endIndex]?.name}`;
 
   return (
     <Layer