[FIX] Fix favico error (#12643)

* Fix favico error

* Fix favico export, remove iife

client/startup/unread.js

@@ -1,8 +1,9 @@
-/* globals fireGlobalEvent, readMessage, Favico, favico, menu */
+/* globals fireGlobalEvent, readMessage, favico, menu */
 import { Meteor } from 'meteor/meteor';
 import { Tracker } from 'meteor/tracker';
 import { FlowRouter } from 'meteor/kadira:flow-router';
 import { Session } from 'meteor/session';
+import { Favico } from 'meteor/rocketchat:favico';
 
 Meteor.startup(function() {
 	Tracker.autorun(function() {

packages/rocketchat-favico/client/favico.js

@@ -23,9 +23,8 @@
  * });
  */
 /* eslint-disable */
-(function() {
 
-	var Favico = (function(opt) {
+	export const Favico = (function(opt) {
 		'use strict';
 		opt = (opt) ? opt : {};
 		var _def = {
@@ -843,20 +842,3 @@
 			}
 		};
 	});
-
-	// AMD / RequireJS
-	if (typeof define !== 'undefined' && define.amd) {
-		define([], function() {
-			return Favico;
-		});
-	}
-	// CommonJS
-	else if (typeof module !== 'undefined' && module.exports) {
-		module.exports = Favico;
-	}
-	// included directly via <script> tag
-	else {
-		this.Favico = Favico;
-	}
-
-})();

packages/rocketchat-favico/client/index.js

@@ -1 +1,4 @@
-import './favico';
+import { Favico } from './favico';
+
+export { Favico };
+