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cms-core/Documentation/Changelog/14.0/Breaking-108310-RequireComposerJsonInClassicMode.rst
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.. include:: /Includes.rst.txt
.. _breaking-108310-1732545123:
=========================================================
Breaking: #108310 - Require composer.json in classic mode
=========================================================
See :issue:`108310`
Description
===========
Extension detection in classic mode now requires a valid :file:`composer.json`
file instead of :file:`ext_emconf.php`. The :file:`composer.json` file must
include :json:`"type": "typo3-cms-*"` and the extension key in
:json:`extra.typo3/cms.extension-key`.
Impact
======
Extensions without a valid :file:`composer.json` are no longer detected
and loaded in classic mode installations.
Affected installations
======================
All classic mode installations must verify that every extension contains
a :file:`composer.json` with:
* :json:`"type"` starting with :json:`"typo3-cms-"`
* :json:`"extra.typo3/cms.extension-key"` containing the extension key
Composer-based installations are not affected.
Migration
=========
Extension authors must ensure their extensions include a valid
:file:`composer.json`. TER extensions have required this since 2021.
Example :file:`composer.json`:
.. code-block:: json
{
"name": "vendor/extension-name",
"type": "typo3-cms-extension",
"extra": {
"typo3/cms": {
"extension-key": "extension_name"
}
}
}
.. index:: PHP-API, NotScanned, ext:core