diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index d65d59d..db9d7df 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -583,14 +583,9 @@ function node_theme_suggestions_node(array $variables) {
 function template_preprocess_node(&$variables) {
   $variables['view_mode'] = $variables['elements']['#view_mode'];
   // Provide a distinct $teaser boolean.
-  $variables['teaser'] = $variables['view_mode'] == 'teaser';
   $variables['node'] = $variables['elements']['#node'];
   /** @var \Drupal\node\NodeInterface $node */
   $node = $variables['node'];
-  $variables['date'] = drupal_render($variables['elements']['created']);
-  unset($variables['elements']['created']);
-  $variables['author_name'] = drupal_render($variables['elements']['uid']);
-  unset($variables['elements']['uid']);
 
   $variables['url'] = $node->url('canonical', array(
     'language' => $node->language(),
@@ -611,9 +606,13 @@ function template_preprocess_node(&$variables) {
   // Display post information only on certain node types.
   $node_type = $node->type->entity;
   // Used by RDF to add attributes around the author and date submitted.
-  $variables['author_attributes'] = new Attribute();
   $variables['display_submitted'] = $node_type->displaySubmitted();
   if ($variables['display_submitted']) {
+    $variables['author_attributes'] = new Attribute();
+    $variables['date'] = drupal_render($variables['elements']['created']);
+    unset($variables['elements']['created']);
+    $variables['author_name'] = drupal_render($variables['elements']['uid']);
+    unset($variables['elements']['uid']);
     if (theme_get_setting('features.node_user_picture')) {
       // To change user picture settings (e.g. image style), edit the 'compact'
       // view mode on the User entity. Note that the 'compact' view mode might
diff --git a/core/modules/node/templates/node.html.twig b/core/modules/node/templates/node.html.twig
index c08ab7c..5080da2 100644
--- a/core/modules/node/templates/node.html.twig
+++ b/core/modules/node/templates/node.html.twig
@@ -16,13 +16,16 @@
  *   or print a subset such as {{ content.field_example }}. Use
  *   {{ content|without('field_example') }} to temporarily suppress the printing
  *   of a given child element.
- * - author_picture: The node author user entity, rendered using the "compact"
- *   view mode.
  * - metadata: Metadata for this node.
- * - date: Themed creation date field.
- * - author_name: Themed author name field.
  * - url: Direct URL of the current node.
  * - display_submitted: Whether submission information should be displayed.
+ *   If display_submitted is set, additional variables are prepared:
+ *    - author_picture: The node author user entity, rendered using the "compact"
+ *      view mode.. 
+ *    -  date: Themed creation date field.
+ *    -  author_name: Themed author name field.
+ *    - author_attributes: Same as attributes, except applied to the author of
+ *      the node that appears in the template.
  * - attributes: HTML attributes for the containing element.
  *   The attributes.class element may contain one or more of the following
  *   classes:
@@ -43,17 +46,12 @@
  *   tag that appears in the template.
  * - content_attributes: Same as attributes, except applied to the main
  *   content tag that appears in the template.
- * - author_attributes: Same as attributes, except applied to the author of
- *   the node tag that appears in the template.
  * - title_prefix: Additional output populated by modules, intended to be
  *   displayed in front of the main title tag that appears in the template.
  * - title_suffix: Additional output populated by modules, intended to be
  *   displayed after the main title tag that appears in the template.
  * - view_mode: View mode; for example, "teaser" or "full".
- * - teaser: Flag for the teaser state. Will be true if view_mode is 'teaser'.
  * - page: Flag for the full page state. Will be true if view_mode is 'full'.
- * - readmore: Flag for more state. Will be true if the teaser content of the
- *   node cannot hold the main body content.
  * - is_front: Flag for front. Will be true when presented on the front page.
  * - logged_in: Flag for authenticated user status. Will be true when the
  *   current user is a logged-in member.