DatetimeRangeViewsHooks.php

<?php

namespace Drupal\datetime_range\Hook;

use Drupal\field\FieldStorageConfigInterface;
use Drupal\Core\Hook\Attribute\Hook;

/**
 * Hook implementations for datetime_range.
 */
class DatetimeRangeViewsHooks {
    
    /**
     * Implements hook_field_views_data().
     */
    public function fieldViewsData(FieldStorageConfigInterface $field_storage) : array {
        // Include datetime.views.inc file in order for helper function
        // datetime_type_field_views_data_helper() to be available.
        \Drupal::moduleHandler()->loadInclude('datetime', 'inc', 'datetime.views');
        // Get datetime field data for value and end_value.
        $data = datetime_type_field_views_data_helper($field_storage, [], 'value');
        $data = datetime_type_field_views_data_helper($field_storage, $data, 'end_value');
        return $data;
    }

}