By kim.pepper on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
8.8.x
Introduced in version: 
8.8.0
Issue links: 
https://www.drupal.org/node/3035312
Description: 

file_scan_directory is deprecated and has been moved to the file_system service.

Before:

$files = file_scan_directory($directory);

After

if (is_dir($directory)) {
  $files = \Drupal::service('file_system')->scanDirectory($directory);
}

When possible, you should inject the FileSystemInterface into your constructor.

Impacts: 
Module developers