From 74ad159dac22317dc18b9877bd3ce0eaa32486ea Mon Sep 17 00:00:00 2001
From: Zachary Anderson <zra@google.com>
Date: Fri, 22 Dec 2017 15:12:10 -0800
Subject: [PATCH] Ensure Platform.localeName isn't '_'

---
 lib/ui/hooks.dart | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/ui/hooks.dart b/lib/ui/hooks.dart
index 9de206dac3866..a5cfa6a0c85ec 100644
--- a/lib/ui/hooks.dart
+++ b/lib/ui/hooks.dart
@@ -41,7 +41,11 @@ void _updateWindowMetrics(double devicePixelRatio,
 
 typedef String LocaleClosure();
 
-String _localeClosure() => window._locale.toString();
+String _localeClosure() {
+  const String enUS = 'en_US';
+  final String locale = window?._locale?.toString() ?? enUS;
+  return (locale == '_') ? enUS : locale;
+}
 
 LocaleClosure _getLocaleClosure() => _localeClosure;