How can I get a list of all my site's module and themes? [closed]

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I want to get the list of current modules and themes and modify them on Drupal 9, previously in Drupal 8,7 I used the following functions to get and save them but it seems they are depricated on Drupal 9.

 system_get_info(), _system_rebuild_module_data()

what is equivalent to these functions in Drupal 9 and how can get/update data about the module/themes in Drupal 9?

Answer 1

Simply check the deprecation notice on system_get_info

Deprecated

in drupal:8.8.0 and is removed from drupal:9.0.0. Use \Drupal::service('extension.list.$type')->getExtensionInfo() or \Drupal::service('extension.list.$type')->getAllInstalledInfo() instead.

and the change record on _system_rebuild_module_data() and co. are replaced by services to give you all available modules and themes

// If you want to just get all extensions without rebuilding.
$module_list = \Drupal::service('extension.list.module')->getList();

Answer 2

The change records tell you all you need to know ...

https://www.drupal.org/list-changes/drupal/published?keywords_description=system_get_info&to_branch=&version=&created_op=%3E%3D&created%5Bvalue%5D=&created%5Bmin%5D=&created%5Bmax%5D=