Importing vanillin from upstream ;) ;)

app/javascript/mastodon/features/notifications/containers/notification_container.js

@@ -0,0 +1,15 @@
+import { connect } from 'react-redux';
+import { makeGetNotification } from '../../../selectors';
+import Notification from '../components/notification';
+
+const makeMapStateToProps = () => {
+  const getNotification = makeGetNotification();
+
+  const mapStateToProps = (state, props) => ({
+    notification: getNotification(state, props.notification, props.accountId),
+  });
+
+  return mapStateToProps;
+};
+
+export default connect(makeMapStateToProps)(Notification);