Dont use CommonJS (require, module.exports) anywhere (#24913)

app/javascript/mastodon/main.jsx

@@ -5,8 +5,7 @@ import Mastodon from 'mastodon/containers/mastodon';
 import { store } from 'mastodon/store/configureStore';
 import { me } from 'mastodon/initial_state';
 import ready from 'mastodon/ready';
-
-const perf = require('mastodon/performance');
+import * as perf from 'mastodon/performance';
 
 /**
  * @returns {Promise<void>}