framework/extensions/statistics/extend.php

<?php

/*
 * This file is part of Flarum.
 *
 * (c) Toby Zerner <toby.zerner@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Flarum\Extend;
use Flarum\Statistics\Listener;

return [
    (new Extend\Frontend('admin'))
        ->js(__DIR__.'/js/dist/admin.js')
        ->css(__DIR__.'/less/admin.less')
        ->content(Listener\AddStatisticsData::class),
];