yii2/extensions/debug/views/default/panels/assets/detail.php

<?php
/* @var $panel yii\debug\panels\AssetPanel */

use yii\helpers\Html;
use yii\helpers\Inflector;
?>
<h1>Asset Bundles</h1>

<?php if (empty($panel->data)) {
    echo '<p>No asset bundle was used.</p>';
    return;
} ?>
<table class="table table-striped table-bordered">
    <caption>
        <p>Total <b><?= count($panel->data) ?></b> asset bundles were loaded.</p>
    </caption>
<?php
foreach ($panel->data as $name => $bundle) {
?>
    <thead>
        <tr>
            <td colspan="2"><h3 id="<?= Inflector::camel2id($name) ?>"><?= $name ?></h3></td>
        </tr>
    </thead>
    <tbody>
        <tr>
            <th>sourcePath</th>
            <td><?= Html::encode($bundle['sourcePath'] !== null ? $bundle['sourcePath'] : $bundle['basePath']) ?></td>
        </tr>
        <?php if ($bundle['basePath'] !== null): ?>
            <tr>
                <th>basePath</th>
                <td><?= Html::encode($bundle['basePath']) ?></td>
            </tr>
        <?php endif; ?>
        <?php if ($bundle['baseUrl'] !== null): ?>
            <tr>
                <th>baseUrl</th>
                <td><?= Html::encode($bundle['baseUrl']) ?></td>
            </tr>
        <?php endif; ?>
        <?php if (!empty($bundle['css'])): ?>
        <tr>
            <th>css</th>
            <td><?= Html::ul($bundle['css'], ['class' => 'assets']) ?></td>
        </tr>
        <?php endif; ?>
        <?php if (!empty($bundle['js'])): ?>
        <tr>
            <th>js</th>
            <td><?= Html::ul($bundle['js'], ['class' => 'assets']) ?></td>
        </tr>
        <?php endif; ?>
        <?php if (!empty($bundle['depends'])): ?>
        <tr>
            <th>depends</th>
            <td><ul class="assets">
                <?php foreach ($bundle['depends'] as $depend): ?>
                    <li><?= Html::a($depend, '#' . Inflector::camel2id($depend)) ?></li>
                <?php endforeach; ?>
            </ul></td>
        </tr>
        <?php endif; ?>
    </tbody>
<?php
}
?>
</table>