From ee2b525c8fde497d53b06cc4fb92f20782d68231 Mon Sep 17 00:00:00 2001
From: Valentin Rey Rosell <valentin.rosell@sikt.no>
Date: Wed, 12 Mar 2025 11:45:58 +0100
Subject: [PATCH 1/2] Explicitly set browser to nil if browser type is not
 found

---
 .gitignore                                     | 4 ++++
 packages/react-native-app-auth/ios/RNAppAuth.m | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/.gitignore b/.gitignore
index e545102e..6edaa449 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,6 +33,10 @@ android/gradle/
 android/gradlew
 android/gradlew.bat
 
+# Android/Eclipse
+#
+android/.settings/
+
 # node.js
 #
 node_modules/
diff --git a/packages/react-native-app-auth/ios/RNAppAuth.m b/packages/react-native-app-auth/ios/RNAppAuth.m
index 938c045c..a4afddc6 100644
--- a/packages/react-native-app-auth/ios/RNAppAuth.m
+++ b/packages/react-native-app-auth/ios/RNAppAuth.m
@@ -717,6 +717,9 @@ - (NSString*)getErrorCode: (NSError*) error defaultCode: (NSString *) defaultCod
             }
     };
     BrowserBlock browser = browsers[browserType];
+    if (!browser) {
+        return nil;
+    }
     return browser();
 }
 #endif

From 443871baddd73e8b2527ab99042e2c1e0f026940 Mon Sep 17 00:00:00 2001
From: Valentin Rey Rosell <valentin.rosell@sikt.no>
Date: Wed, 12 Mar 2025 14:26:37 +0100
Subject: [PATCH 2/2] Changeset

---
 .changeset/nervous-donuts-relate.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/nervous-donuts-relate.md

diff --git a/.changeset/nervous-donuts-relate.md b/.changeset/nervous-donuts-relate.md
new file mode 100644
index 00000000..9345eb71
--- /dev/null
+++ b/.changeset/nervous-donuts-relate.md
@@ -0,0 +1,5 @@
+---
+'react-native-app-auth': patch
+---
+
+#1063 Updated getCustomBrowser: in RNAppAuth.m to explicitly check the return value of browser. If the value is not in the dictionary, it will return nil to trigger an ephemeral session.