I have created a pseudo field with this code:

function my_module_entity_extra_field_info() {     $  extra = [];     $  extra['node']['my_bundle']['display']['my_pseudo_field'] = array(         'label' => t('Pseudo Label'),         'description' => t('Pseudo description'),         'weight' => 100,         'visible' => TRUE     );     return $  extra; } /**  * Implements hook_ENTITY_TYPE_view().  */ function my_module_node_view(array &$  build, EntityInterface $  entity, EntityViewDisplayInterface $  display, $  view_mode, $  langcode='fr') {     if ($  display->getComponent('my_pseudo_field')) {         $  build['my_pseudo_field'] = [             '#type' => 'markup',             '#markup' => 'This is my pseudo content',         ];     } } 

Everything is working fine, except that I couldn’t add it in a view.