Issue #3529457 by cmlara: Copy core 11.1.x ExtensionMimeTypeGuesser to s3fs (!80) · Merge requests · project / s3fs · GitLab

For ExtensionMimeTypeGuesser source see Drupal Core https://git.drupalcode.org/project/drupal/-/blob/fb4a6c4c1fdbec40ad7fad014feabaf0067716c9/core/lib/Drupal/Core/File/MimeType/ExtensionMimeTypeGuesser.php

Closes #3529457