Move polyfills to client/ (#17266)

.eslintignore

@@ -8,7 +8,6 @@ app/katex/client/katex/katex.min.js
 packages/rocketchat-livechat/assets/rocketchat-livechat.min.js
 packages/rocketchat-livechat/assets/rocket-livechat.js
 app/theme/client/vendor/
-app/ui/client/lib/customEventPolyfill.js
 app/ui/client/lib/Modernizr.js
 public/mp3-realtime-worker.js
 public/lame.min.js

app/ui/client/index.js

@@ -2,7 +2,6 @@ import { createTemplateForComponent } from '../../../client/reactAdapters';
 
 import './lib/accounts';
 import './lib/collections';
-import './lib/customEventPolyfill';
 import './lib/iframeCommands';
 import './lib/menu';
 import './lib/Modernizr';

app/ui/client/lib/customEventPolyfill.js

-(function () {
-  function CustomEvent ( event, params ) {
-    params = params || { bubbles: false, cancelable: false, detail: undefined };
-    var evt = document.createEvent( 'CustomEvent' );
-    evt.initCustomEvent( event, params.bubbles, params.cancelable, params.detail );
-    return evt;
-   }
-
-  CustomEvent.prototype = window.Event.prototype;
-
-  window.CustomEvent = CustomEvent;
-})();
\ No newline at end of file

client/main.js

-import '@rocket.chat/fuselage-polyfills';
-import 'url-polyfill';
+import './polyfills';
 
 import './lib/meteorCallWrapper';
 import './importsCss';

client/polyfills/customEventPolyfill.js

+(() => {
+	if (typeof window.CustomEvent === 'function') {
+		return;
+	}
+
+	function CustomEvent(event, params) {
+		params = params || { bubbles: false, cancelable: false, detail: null };
+		const evt = document.createEvent('CustomEvent');
+		evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail);
+		return evt;
+	}
+
+	CustomEvent.prototype = window.CustomEvent?.prototype || window.Event.prototype;
+
+	window.CustomEvent = CustomEvent;
+})();

client/polyfills/index.js

+import '@rocket.chat/fuselage-polyfills';
+import 'url-polyfill';
+import './customEventPolyfill';