From fd3e5246369ec535a4795e1bf05fd4b4a4bd1f2c Mon Sep 17 00:00:00 2001
From: Gethin Webster <gethinw@amazon.com>
Date: Mon, 12 Jun 2023 16:57:23 +0200
Subject: [PATCH] Optional `matchMedia` calls

---
 src/code-editor/util.ts                     | 2 +-
 src/internal/hooks/use-visual-mode/index.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/code-editor/util.ts b/src/code-editor/util.ts
index 4f87c0cfdd..e7f69a90fc 100644
--- a/src/code-editor/util.ts
+++ b/src/code-editor/util.ts
@@ -23,7 +23,7 @@ export function getDefaultTheme(element: HTMLElement): CodeEditorProps.Theme {
     !!findUpUntil(
       element,
       node => node.classList.contains('awsui-polaris-dark-mode') || node.classList.contains('awsui-dark-mode')
-    ) && !window?.matchMedia('print').matches;
+    ) && !window?.matchMedia?.('print').matches;
   return isDarkMode ? DEFAULT_DARK_THEME : DEFAULT_LIGHT_THEME;
 }
 
diff --git a/src/internal/hooks/use-visual-mode/index.ts b/src/internal/hooks/use-visual-mode/index.ts
index 4b9f2074fc..56154ae29c 100644
--- a/src/internal/hooks/use-visual-mode/index.ts
+++ b/src/internal/hooks/use-visual-mode/index.ts
@@ -15,7 +15,7 @@ export function useCurrentMode(elementRef: React.RefObject<HTMLElement>) {
       findUpUntil(
         node,
         node => node.classList.contains('awsui-polaris-dark-mode') || node.classList.contains('awsui-dark-mode')
-      ) && !window?.matchMedia('print').matches;
+      ) && !window?.matchMedia?.('print').matches;
     setValue(darkModeParent ? 'dark' : 'light');
   });
   return value;