From e054b561c030c37e6f7416c0d57ec2a6da104c12 Mon Sep 17 00:00:00 2001
From: Isaiah Odhner <isaiahodhner@gmail.com>
Date: Thu, 24 Feb 2022 20:43:46 -0500
Subject: [PATCH] Add unhandledrejection handling

---
 src/error-handling-basic.js    | 4 ++++
 src/error-handling-enhanced.js | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/src/error-handling-basic.js b/src/error-handling-basic.js
index 09ee910..c86feaa 100644
--- a/src/error-handling-basic.js
+++ b/src/error-handling-basic.js
@@ -17,3 +17,7 @@ window.onerror = function (msg, url, lineNo, columnNo, error) {
 	}
 	return false;
 };
+
+window.onunhandledrejection = function (event) {
+	alert('Unhandled Rejection: ' + event.reason);
+}
diff --git a/src/error-handling-enhanced.js b/src/error-handling-enhanced.js
index 96d7050..d65653a 100644
--- a/src/error-handling-enhanced.js
+++ b/src/error-handling-enhanced.js
@@ -14,6 +14,10 @@ window.onerror = function (message, source, lineno, colno, error) {
 	}
 };
 
+window.onunhandledrejection = function (event) {
+	show_error_message(localize("Internal application error.") + "\nUnhandled Rejection.", event.reason);
+};
+
 if (/MSIE \d|Trident.*rv:/.test(navigator.userAgent)) {
 	document.write(
 		'<style>body { text-align: center; }</style>' +