Bug report

https://packagist.org/packages/typo3/cms-core contains an autoload-file: Resources/PHP/GlobalDebugFunctions.php. But Typo3 comes with a composer-plugin, which moves files to a different direcotry (public/typo3/sysext/ instead of vendor/typo3/). The plugin alters composer autoload correctly. require "vendor/autoload.php"; works flawless, but phpstan ^0.12.26 doesn’t. It tries to require the file without respecting vendor/composer/autoload_files.php.

Code snippet that reproduces the problem

composer.json:

  "require": {
    "typo3/cms-core": "*",
  }

helloworld.php:

<?php

Actual output

 ------ ------------------------------------------------------------------------------------------------------------------------------
  Line   helloworld.php
 ------ ------------------------------------------------------------------------------------------------------------------------------
         Could not read file:
         .../vendor/typo3/cms-core/Resources/PHP/GlobalDebugFunctions.php
 ------ ------------------------------------------------------------------------------------------------------------------------------

Expected output

 [OK] No errors