Returns JavaScript settings to be attached.
Most text editors use JavaScript to provide a WYSIWYG or toolbar on the client-side interface. This method can be used to convert internal settings of the text editor into JavaScript variables that will be accessible when the text editor is loaded.
\Drupal\editor\Plugin\Core\Entity\Editor $editor: A configured text editor object.
array An array of settings that will be added to the page for use by this text editor's JavaScript integration.
EditorManager::getAttachments()
function getJSSettings(Editor $editor);