Get translated taxonomy
Code
<?php
$terms = \Drupal::entityTypeManager()->getStorage('taxonomy_term')->loadTree('vid', 0, NULL, TRUE);
$current_langcode = \Drupal::languageManager()->getCurrentLanguage()->getId();
foreach ($terms as &$term) {
if ($term->hasTranslation($current_langcode)) {
$term = $term->getTranslation($current_langcode);
}
}
?>