From 7aa6c1d1a37409230dd4909ef8a87cbc401cc8a3 Mon Sep 17 00:00:00 2001
From: Quincy Morgan <2046746+quincylvania@users.noreply.github.com>
Date: Tue, 15 Sep 2020 18:27:26 -0400
Subject: [PATCH] Fix infinite recursion error for en-US

---
 modules/core/localizer.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/modules/core/localizer.js b/modules/core/localizer.js
index 494a27d8a..b23699824 100644
--- a/modules/core/localizer.js
+++ b/modules/core/localizer.js
@@ -293,10 +293,10 @@ export function coreLocalizer() {
         // no localized string found...
 
         // attempt to fallback to a lower-priority langauge
-        let fallbackIndex = _localeCodes.indexOf(locale) + 1;
-        if (fallbackIndex < _localeCodes.length) {
+        let index = _localeCodes.indexOf(locale);
+        if (index >= 0 && index < _localeCodes.length - 1) {
             // eventually this will be 'en' or another locale with 100% coverage
-            let fallback = _localeCodes[fallbackIndex];
+            let fallback = _localeCodes[index + 1];
             return localizer.t(stringId, replacements, fallback);
         }