Drupal 8 autoloader bootstrap for Phpactor

phpactor_autoload.php

<?php

use Drupal\Core\DrupalKernel;
use Symfony\Component\HttpFoundation\Request;
use Drupal\Core\Database\Database;

$autoload = require __DIR__ . '/autoload.php';

$kernel = new DrupalKernel('prod', $autoload);
$kernel->setSitePath(__DIR__);
$request = Request::createFromGlobals();
$kernel = DrupalKernel::createFromRequest($request,$autoload, 'prod' );
$kernel->boot();

return $autoload;