functions.php

<?php
/**
 * Timber starter-theme
 * https://github.com/timber/starter-theme
 *
 * @package  WordPress
 * @subpackage  Timber
 * @since   Timber 0.1
 */

use Timber\Timber;

require get_template_directory() . '/handler/StarterSite.php';

new Timber();

if ( ! class_exists( 'Timber' ) ) {
	add_action( 'admin_notices', function() {
		echo '<div class="error"><p>Timber not activated. Make sure you activate the plugin in <a href="' . esc_url( admin_url( 'plugins.php#timber' ) ) . '">' . esc_url( admin_url( 'plugins.php' ) ) . '</a></p></div>';
	});

	return;
}

/**
 * Sets the directories (inside your theme) to find .twig files
 */
Timber::$dirname = array( 'templates', 'views' );

/**
 * By default, Timber does NOT autoescape values. Want to enable Twig's autoescape?
 * No prob! Just set this value to true
 */
Timber::$autoescape = false;

new StarterSite();