ext_tables.php

<?php
if (!defined('TYPO3_MODE')) {
    die ('Access denied.');
}

\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addStaticFile('speciality', 'Configuration/TypoScript', 'Speciality: main template');

# Add user TSConfig
$basePath = \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::extPath('speciality');

// Default User TSConfig to be added in any case.
TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addUserTSConfig('
    <INCLUDE_TYPOSCRIPT: source="DIR:EXT:speciality/Configuration/UserTS">
');

// New icons for the BE
// if (TYPO3_MODE === 'BE') {
//
//     $icons = array('category', 'comment', 'storage', 'news', 'people');
//     foreach ($icons as $icon) {
//
//         \TYPO3\CMS\Backend\Sprite\SpriteManager::addTcaTypeIcon(
//             'pages',
//             'contains-' . $icon,
//             \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::extRelPath('speciality') . 'Resources/Public/Backend/Icons/' . $icon . '.png');
//
//         $GLOBALS['TCA']['pages']['columns']['module']['config']['items'][] = array(
//             ucfirst($icon),
//             $icon,
//             \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::extRelPath('speciality') . 'Resources/Public/Backend/Icons/' . $icon . '.png'
//         );
//     }
// }

# Use Flux Core API for registering extension provider.
\FluidTYPO3\Flux\Core::registerProviderExtensionKey('speciality', 'Page');
\FluidTYPO3\Flux\Core::registerProviderExtensionKey('speciality', 'Content');