From cd909ad8c7f9286e2c8b8d23a5f60c54aa66fdc4 Mon Sep 17 00:00:00 2001
From: Cameron Dutro <camertron@gmail.com>
Date: Wed, 15 Jan 2025 14:39:30 -0800
Subject: [PATCH 1/2] Avoid accessing properties of undefined in
 useAnnouncements

---
 packages/react/src/FilteredActionList/useAnnouncements.tsx | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/packages/react/src/FilteredActionList/useAnnouncements.tsx b/packages/react/src/FilteredActionList/useAnnouncements.tsx
index aa48a8a2b45..43e11c08400 100644
--- a/packages/react/src/FilteredActionList/useAnnouncements.tsx
+++ b/packages/react/src/FilteredActionList/useAnnouncements.tsx
@@ -4,6 +4,7 @@
 import {announce} from '@primer/live-region-element'
 import {useEffect, useRef} from 'react'
 import type {FilteredActionListProps} from './FilteredActionListEntry'
+import type {ItemInput} from '../deprecated/ActionList/List'
 
 // we add a delay so that it does not interrupt default screen reader announcement and queues after it
 const delayMs = 500
@@ -28,10 +29,10 @@ const getItemWithActiveDescendant = (
   const optionElements = listElement.querySelectorAll('[role="option"]')
 
   const index = Array.from(optionElements).indexOf(activeItemElement)
-  const activeItem = items[index]
+  const activeItem = items[index] as ItemInput | undefined
 
-  const text = activeItem.text
-  const selected = activeItem.selected
+  const text = activeItem?.text
+  const selected = activeItem?.selected
 
   return {index, text, selected}
 }

From 342955a688334dac83328cb8c45fc9d1bd62f9e7 Mon Sep 17 00:00:00 2001
From: Cameron Dutro <camertron@gmail.com>
Date: Wed, 15 Jan 2025 14:43:51 -0800
Subject: [PATCH 2/2] Add changeset

---
 .changeset/giant-bees-impress.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/giant-bees-impress.md

diff --git a/.changeset/giant-bees-impress.md b/.changeset/giant-bees-impress.md
new file mode 100644
index 00000000000..0b9d17e7e92
--- /dev/null
+++ b/.changeset/giant-bees-impress.md
@@ -0,0 +1,5 @@
+---
+"@primer/react": patch
+---
+
+Fix an issue in useAnnouncements.tsx causing a TypeError in production. The activeItem variable may be null.