rector/bootstrap.php

<?php

declare(strict_types = 1);

namespace
{
    // inspired by https://github.com/phpstan/phpstan/blob/master/bootstrap.php
    spl_autoload_register(function (string $class): void {
        static $composerAutoloader;

        // already loaded in bin/rector.php
        if (defined('__RECTOR_RUNNING__')) {
            return;
        }

        // load prefixed or native class, e.g. for running tests
        if (strpos($class, 'RectorPrefix') === 0 || strpos($class, 'Rector\\') === 0) {
            if ($composerAutoloader === null) {
                // prefixed version autoload
                $composerAutoloader = require __DIR__ . '/vendor/autoload.php';
            }
            $composerAutoloader->loadClass($class);
        }

        // aliased by php-scoper, that's why its missing
        if ($class === 'Symplify\SmartFileSystem\SmartFileInfo') {
            $filePath = __DIR__ . '/vendor/symplify/smart-file-system/src/SmartFileInfo.php';
            if (file_exists($filePath)) {
                require $filePath;
            }
        }

        if ($class === 'Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator') {
            // avoid duplicated autoload bug in Rector demo runner
            if (class_exists('Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator', false)) {
                return;
            }
        }
    });

    if (! interface_exists('UnitEnum')) {
        /**
         * @since 8.1
         */
        interface UnitEnum
        {
            /**
             * @return static[]
             */
            public static function cases(): array;
        }
    }

    if (! interface_exists('BackedEnum')) {
        /**
         * @since 8.1
         */
        interface BackedEnum extends UnitEnum {
            /**
             * @param int|string $value
             * @return $this
             */
            public static function from($value);

            /**
             * @param int|string $value
             * @return $this|null
             */
            public static function tryFrom($value);
        }
    }
}

// @see https://github.com/rectorphp/rector/issues/6531
namespace PHPUnit\Framework
{
    if (! class_exists('PHPUnit\Framework\TestCase')) {
        abstract class TestCase
        {
        }
    }
}