Prevent double saving of translated chats. Exception-safe event emitter

public/scripts/eventemitter.js

@@ -56,7 +56,13 @@ EventEmitter.prototype.emit = async function (event) {
         length = listeners.length;
 
         for (i = 0; i < length; i++) {
-            await listeners[i].apply(this, args);
+            try {
+                await listeners[i].apply(this, args);
+            }
+            catch (err) {
+                console.error(err);
+                console.trace('Error in event listener');
+            }
         }
     }
 };

public/scripts/extensions/translate/index.js

@@ -157,8 +157,6 @@ async function translateIncomingMessage(messageId) {
     message.extra.display_text = translation;
 
     $(`#chat .mes[mesid="${messageId}"] .mes_text`).html(messageFormatting(translation, message.name, message.is_system, message.is_user));
-
-    context.saveChat();
 }
 
 async function translateProviderGoogle(text, lang) {
@@ -264,8 +262,10 @@ jQuery(() => {
         saveSettingsDebounced();
     });
     $(document).on('click', '.mes_translate', function () {
+        const context = getContext();
         const messageId = $(this).closest('.mes').attr('mesid');
         translateIncomingMessage(messageId);
+        context.saveChat();
     });
 
     loadSettings();