Display Cancellation Reason

<?php

add_hook('ClientAreaProductDetailsOutput', 1, function($service) {
    if (!empty($service['service']->cancellationRequests['0']['reason'])) {
        $cancellationReason = htmlspecialchars ($service['service']->cancellationRequests['0']['reason'], ENT_QUOTES);

        return "
            <script>
                var cancellationReason = new DOMParser().parseFromString('{$cancellationReason}', 'text/html');
                jQuery('#alertPendingCancellation').append(`<br />Reason: \${cancellationReason.documentElement.textContent}`);
            </script>
        ";
    }
});