From 9bf1b9f2a2a200002eb7dfe0ebf53b3656585ebd Mon Sep 17 00:00:00 2001
From: John McLear <john@mclear.co.uk>
Date: Thu, 16 Jul 2020 09:31:35 +0100
Subject: [PATCH] bugfix / testing: Ie11 warning for not having Promises
 (#4167)

Makes IE11 work again but may cause an issue for plugin testing in IE11.  IE plugin tests in IE11 will probably fail as the plugin code will not execute.
---
 src/static/js/pluginfw/hooks.js | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/static/js/pluginfw/hooks.js b/src/static/js/pluginfw/hooks.js
index 489709e33..e9700c37f 100644
--- a/src/static/js/pluginfw/hooks.js
+++ b/src/static/js/pluginfw/hooks.js
@@ -96,11 +96,16 @@ function aCallAll(hook_name, args, cb) {
 /* return a Promise if cb is not supplied */
 exports.aCallAll = function (hook_name, args, cb) {
   if (cb === undefined) {
-    return new Promise(function(resolve, reject) {
-      aCallAll(hook_name, args, function(err, res) {
-	return err ? reject(err) : resolve(res);
+    try{
+      return new Promise(function(resolve, reject) {
+        aCallAll(hook_name, args, function(err, res) {
+  	      return err ? reject(err) : resolve(res);
+        });
       });
-    });
+    }catch(e){
+      $.gritter.removeAll();
+      $.gritter.add("Please update your web browser")
+    }
   } else {
     return aCallAll(hook_name, args, cb);
   }