TYPO3: Provides a global auto-loader hook which runs before TYPO3's class alias loader

4.1.0 2021-06-28 09:04 UTC

This package is auto-updated.

Last update: 2021-10-28 09:50:05 UTC


To provide extended functionality to the TYPO3 core we need to listen for loaded classes. However, TYPO3 uses the ClassAliasLoader which registers itself (you can configure this now, but the default is still TRUE) as first possible autoloader (spl_autoload_register -> FLAG prepend is set to true).

The resulting problem is, that there is literary no way of adding an additional class loader to the stack.

Why do I need a class loader? Well, I have to bootstrap the extension as soon as the environment builder prepared the "Environment" class to create the "core modding" class overrides. But there is no hook or signal or anything I could use to call said bootstrap other than watching for required classes and trigger the better api bootstrap as soon as the "\TYPO3\CMS\Core\Core\Bootstrap" class is loaded.

This plugin is a temporary solution to the problem. As soon as I see a better one I will gladly drop this composer plugin again.

Usage in a development environment

If you want to install a package, that somehow depends on this plugin without running in a real TYPO3 project (aka. Dev or Test Scenario), make sure you set the following flag in your composer.json to avoid crashes!

  "extra": {
    "T3BA": {
      "isDev": true  


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