first commit

core/modules/node/content_types.js

@@ -0,0 +1,74 @@
+/**
+ * @file
+ * JavaScript for the node content editing form.
+ */
+
+(function ($, Drupal) {
+  /**
+   * Behaviors for setting summaries on content type form.
+   *
+   * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches summary behaviors on content type edit forms.
+   */
+  Drupal.behaviors.contentTypes = {
+    attach(context) {
+      const $context = $(context);
+      // Provide the vertical tab summaries.
+      $context.find('#edit-submission').drupalSetSummary((context) => {
+        const values = [];
+        values.push(
+          Drupal.checkPlain($(context).find('#edit-title-label')[0].value) ||
+            Drupal.t('Requires a title'),
+        );
+        return values.join(', ');
+      });
+      $context.find('#edit-workflow').drupalSetSummary((context) => {
+        const values = [];
+        $(context)
+          .find('input[name^="options"]:checked')
+          .next('label')
+          .each(function () {
+            values.push(Drupal.checkPlain(this.textContent));
+          });
+        if ($(context).find('#edit-options-status:checked').length === 0) {
+          values.unshift(Drupal.t('Not published'));
+        }
+        return values.join(', ');
+      });
+      $('#edit-language', context).drupalSetSummary((context) => {
+        const values = [];
+
+        values.push(
+          $(
+            '.js-form-item-language-configuration-langcode select option:selected',
+            context,
+          )[0].textContent,
+        );
+
+        $('input:checked', context)
+          .next('label')
+          .each(function () {
+            values.push(Drupal.checkPlain(this.textContent));
+          });
+
+        return values.join(', ');
+      });
+      $context.find('#edit-display').drupalSetSummary((context) => {
+        const values = [];
+        const $editContext = $(context);
+        $editContext
+          .find('input:checked')
+          .next('label')
+          .each(function () {
+            values.push(Drupal.checkPlain(this.textContent));
+          });
+        if ($editContext.find('#edit-display-submitted:checked').length === 0) {
+          values.unshift(Drupal.t("Don't display post information"));
+        }
+        return values.join(', ');
+      });
+    },
+  };
+})(jQuery, Drupal);

core/modules/node/css/node.admin.css

@@ -0,0 +1,11 @@
+/**
+ * @file
+ * Styles for administration pages.
+ */
+
+/**
+ * Revisions overview screen.
+ */
+.revision-current {
+  background: #ffc;
+}

core/modules/node/css/node.module.css

@@ -0,0 +1,71 @@
+/**
+ * @file
+ * Styles for administration pages.
+ */
+
+/**
+ * Node add/edit form layout
+ */
+
+/* Narrow screens */
+.layout-region {
+  box-sizing: border-box;
+}
+
+/* Wide screens */
+@media screen and (min-width: 780px), (orientation: landscape) and (min-device-height: 780px) {
+  .layout-region-node-main,
+  .layout-region-node-footer {
+    float: left; /* LTR */
+    box-sizing: border-box;
+    width: 65%;
+    padding-right: 2em; /* LTR */
+  }
+
+  [dir="rtl"] .layout-region-node-main,
+  [dir="rtl"] .layout-region-node-footer {
+    float: right;
+    padding-right: 0;
+    padding-left: 2em;
+  }
+
+  .layout-region-node-secondary {
+    float: right; /* LTR */
+    width: 35%;
+  }
+
+  [dir="rtl"] .layout-region-node-secondary {
+    float: left;
+  }
+
+  /* @todo File an issue to add a standard class to all text-like inputs */
+  .layout-region-node-secondary .form-autocomplete,
+  .layout-region-node-secondary .form-text,
+  .layout-region-node-secondary .form-tel,
+  .layout-region-node-secondary .form-email,
+  .layout-region-node-secondary .form-url,
+  .layout-region-node-secondary .form-search,
+  .layout-region-node-secondary .form-number,
+  .layout-region-node-secondary .form-color,
+  .layout-region-node-secondary textarea {
+    box-sizing: border-box;
+    width: 100%;
+    max-width: 100%;
+  }
+}
+
+/**
+ * The vertical toolbar mode gets triggered for narrow screens, which throws off
+ * the intent of media queries written for the viewport width. When the vertical
+ * toolbar is on, we need to suppress layout for the original media width + the
+ * toolbar width (240px). In this case, 240px + 780px.
+ */
+@media screen and (max-width: 1020px) {
+  .toolbar-vertical.toolbar-tray-open .layout-region-node-main,
+  .toolbar-vertical.toolbar-tray-open .layout-region-node-footer,
+  .toolbar-vertical.toolbar-tray-open .layout-region-node-secondary {
+    float: none;
+    width: auto;
+    padding-right: 0;
+  }
+}

core/modules/node/css/node.preview.css

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+/**
+ * @file
+ * Styles for node preview page.
+ */
+
+.node-preview-container {
+  position: fixed;
+  z-index: 499;
+  box-sizing: border-box;
+  width: 100%;
+  padding-inline-start: var(--drupal-displace-offset-left, 10px);
+  padding-inline-end: var(--drupal-displace-offset-right, 10px);
+  padding-block: 10px;
+}
+
+[dir="rtl"] .node-preview-container {
+  padding-inline-start: var(--drupal-displace-offset-right, 10px);
+  padding-inline-end: var(--drupal-displace-offset-left, 10px);
+}
+
+@media only screen and (min-width: 36em) {
+  .node-preview-container .form-type-select {
+    margin-left: 25%; /* LTR */
+  }
+  [dir="rtl"] .node-preview-container .form-type-select {
+    margin-right: 25%;
+    margin-left: 0;
+  }
+}

core/modules/node/help_topics/node.creating_content.html.twig

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+---
+label: 'Creating a content item'
+related:
+  - node.overview
+  - node.creating_type
+  - path.creating_alias
+---
+{% set content_link_text %}
+  {% trans %}Content{% endtrans %}
+{% endset %}
+{% set content_link = render_var(help_route_link(content_link_text, 'system.admin_content')) %}
+{% set content_permissions_link_text %}
+  {% trans %}Access the Content overview page{% endtrans %}
+{% endset %}
+{% set content_permissions_link = render_var(help_route_link(content_permissions_link_text, 'user.admin_permissions.module', {'modules': 'node'})) %}
+{% set content_overview_topic = render_var(help_topic_link('node.overview')) %}
+<h2>{% trans %}Goal{% endtrans %}</h2>
+<p>{% trans %}Create and publish a content item. See {{ content_overview_topic }} for more about content types and content items.{% endtrans %}</p>
+<h2>{% trans %}Who can create content?{% endtrans %}</h2>
+<p>{% trans %}Users with the <em>{{ content_permissions_link }}</em> permission can visit the <em>Content</em> page as described in this topic. Each content type has its own create permissions. For example, to create content of type Article, a user would need the Article: Create new content permission. In addition, users with the <em>Bypass content access control</em> or <em>Administer content</em> permission can create content items of all types. Some contributed modules change the permission structure for creating content.{% endtrans %}</p>
+<h2>{% trans %}Steps{% endtrans %}</h2>
+<ol>
+  <li>{% trans %}In the <em>Manage</em> administrative menu, navigate to <em>{{ content_link }}</em>.{% endtrans %}</li>
+  <li>{% trans %}Click <em>Add content</em>.{% endtrans %}</li>
+  <li>{% trans %}If there is more than one content type defined on your site that you have permission to create, click the name of the type of content you want to create.{% endtrans %}</li>
+  <li>{% trans %}On the content edit form, enter the <em>Title</em> of your content, which will show as the page title when the content item is displayed on a page, and also as the label for the content item in administration screens.{% endtrans %}</li>
+  <li>{% trans %}Fill in the other fields shown on the edit form for this specific content type.{% endtrans %}</li>
+  <li>{% trans %}Leave the <em>Published</em> field checked to publish the content immediately, or uncheck it to make it unpublished. Unpublished content is generally not shown to non-administrative site users.{% endtrans %}</li>
+  <li>{% trans %}Optionally, click <em>Preview</em> to preview the content.{% endtrans %}</li>
+  <li>{% trans %}Click <em>Save</em>. You will see the content displayed on a page.{% endtrans %}</li>
+</ol>
+<h2>{% trans %}Additional resources{% endtrans %}</h2>
+<ul>
+  <li><a href="https://www.drupal.org/docs/user_guide/en/content-chapter.html">{% trans %}Basic Page Management (Drupal User Guide){% endtrans %}</a></li>
+  <li><a href="https://www.drupal.org/docs/user_guide/en/content-create.html">{% trans %}Creating a Content Item (Drupal User Guide){% endtrans %}</a></li>
+</ul>

core/modules/node/help_topics/node.creating_type.html.twig

@@ -0,0 +1,36 @@
+---
+label: 'Creating a content type'
+related:
+  - node.overview
+  - core.content_structure
+  - field_ui.add_field
+  - field_ui.manage_display
+  - field_ui.manage_form
+---
+{% set content_permissions_link_text %}
+  {% trans %}Administer content types{% endtrans %}
+{% endset %}
+{% set content_permissions_link = render_var(help_route_link(content_permissions_link_text, 'user.admin_permissions.module', {'modules': 'node'})) %}
+{% set content_types_link_text %}
+  {% trans %}Content types{% endtrans %}
+{% endset %}
+{% set content_types_link = render_var(help_route_link(content_types_link_text, 'entity.node_type.collection')) %}
+{% set content_overview_topic = render_var(help_topic_link('node.overview')) %}
+<h2>{% trans %}Goal{% endtrans %}</h2>
+<p>{% trans %}Create a new content type. See {{ content_overview_topic }} for more about content types.{% endtrans %}</p>
+<h2>{% trans %}Who can create a content type?{% endtrans %}</h2>
+<p>{% trans %}Users with the <em>{{ content_permissions_link }}</em> permission (typically administrators) can create new content types.{% endtrans %}</p>
+<h2>{% trans %}Steps{% endtrans %}</h2>
+<ol>
+  <li>{% trans %}In the <em>Manage</em> administrative menu, navigate to <em>Structure</em> &gt; <em>{{ content_types_link }}</em>.{% endtrans %}</li>
+  <li>{% trans %}Click <em>Add content type.</em>{% endtrans %}</li>
+  <li>{% trans %}In the <em>Name</em> field, enter a name for the content type, which is how it will be listed in the administrative interface.{% endtrans %}</li>
+  <li>{% trans %}Optionally, enter a <em>Description</em> for the content type. You may also want to adjust some of the settings in the vertical tabs section of the edit page.{% endtrans %}</li>
+  <li>{% trans %}Click <em>Save and manage fields</em>. Your content type will be created, and assuming you have the core Field UI module installed, you will be taken to the <em>Manage fields</em> page for the content type. (If you do not have the core Field UI module installed, the button will say <em>Save</em> instead.){% endtrans %}</li>
+  <li>{% trans %}If you have the core Field UI module installed, follow the steps in the related topics to add fields to the new content type, set up the editing form, and configure the display.{% endtrans %}</li>
+</ol>
+<h2>{% trans %}Additional resources{% endtrans %}</h2>
+<ul>
+  <li><a href="https://www.drupal.org/docs/user_guide/en/structure-content-type.html">{% trans %}Adding a Content Type (Drupal User Guide){% endtrans %}</a></li>
+  <li><a href="https://www.drupal.org/docs/user_guide/en/content-structure-chapter.html">{% trans %}Setting Up Content Structure (Drupal User Guide){% endtrans %}</a></li>
+</ul>

core/modules/node/help_topics/node.editing.html.twig

@@ -0,0 +1,39 @@
+---
+label: 'Editing a content item'
+related:
+  - node.overview
+  - node.creating_content
+---
+{% set content_link_text %}
+  {% trans %}Content{% endtrans %}
+{% endset %}
+{% set content_link = render_var(help_route_link(content_link_text, 'system.admin_content')) %}
+{% set content_permissions_link_text %}
+  {% trans %}Access the Content overview page{% endtrans %}
+{% endset %}
+{% set content_permissions_link = render_var(help_route_link(content_permissions_link_text, 'user.admin_permissions.module', {'modules': 'node'})) %}
+{% set node_overview_topic = render_var(help_topic_link('node.overview')) %}
+<h2>{% trans %}Goal{% endtrans %}</h2>
+<p>{% trans %}Find a content item and edit it, or update a group of content items in bulk. See {{ node_overview_topic }} for more about content types and content items.{% endtrans %}</p>
+<h2>{% trans %}Who can find and edit content?{% endtrans %}</h2>
+<p>{% trans %}Users with the <em>{{ content_permissions_link }}</em> permission can use the <em>Content</em> page to find content. Each content type has its own edit permissions. For example, to edit content of type Article, a user would need the <em>Article: Edit own content</em> permission to edit an article they created, or the <em>Article: Edit any content</em> permission to edit an article someone else created. In addition, users with the <em>Bypass content access control</em> or <em>Administer content</em> permission can edit content items of all types. Some contributed modules change the permission structure for editing content.{% endtrans %}</p>
+<h2>{% trans %}Steps{% endtrans %}</h2>
+<ol>
+  <li>{% trans %}In the <em>Manage</em> administrative menu, navigate to <em>{{ content_link }}</em>.{% endtrans %}</li>
+  <li>{% trans %}Optionally, use filters to reduce the list of content items shown:{% endtrans %}
+    <ul>
+      <li>{% trans %}<em>Title</em>: key word(s) from the title{% endtrans %}</li>
+      <li>{% trans %}<em>Content type</em>{% endtrans %}</li>
+      <li>{% trans %}<em>Published status</em>{% endtrans %}</li>
+      <li>{% trans %}<em>Language</em>{% endtrans %}</li>
+    </ul>
+    {% trans %}If you enter or select filter values, click <em>Filter</em> to apply the filters.{% endtrans %}</li>
+  <li>{% trans %}Optionally, sort the list by clicking a column header. Click again to reverse the order.{% endtrans %}</li>
+  <li>{% trans %}To edit the title or other field values for one content item, click <em>Edit</em> in the row of the content item. Update the values and click <em>Save</em>.{% endtrans %}</li>
+  <li>{% trans %}A few types of edits can be done in bulk to multiple content items. For example, to publish several unpublished content items, check the boxes in the left column (right column in right-to-left languages) to select the desired content items. For <em>Action</em>, select the <em>Publish content</em> action. Click <em>Apply to selected items</em> to make the change. The other actions under <em>Action</em> work in a similar manner.{% endtrans %}</li>
+</ol>
+<h2>{% trans %}Additional resources{% endtrans %}</h2>
+<ul>
+  <li><a href="https://www.drupal.org/docs/user_guide/en/content-chapter.html">{% trans %}Basic Page Management (Drupal User Guide){% endtrans %}</a></li>
+  <li><a href="https://www.drupal.org/docs/user_guide/en/content-edit.html">{% trans %}Editing a Content Item (Drupal User Guide){% endtrans %}</a></li>
+</ul>

core/modules/node/help_topics/node.overview.html.twig

@@ -0,0 +1,19 @@
+---
+label: 'Managing content'
+top_level: true
+related:
+  - core.content_structure
+  - field_ui.add_field
+  - field_ui.manage_display
+  - field_ui.manage_form
+  - node.creating_type
+  - node.creating_content
+  - node.editing
+---
+{% set content_structure_topic = render_var(help_topic_link('core.content_structure')) %}
+<h2>{% trans %}What is a content item?{% endtrans %}</h2>
+<p>{% trans %}A <em>content item</em> is a type of content entity for page-level content, which can have fields that store text, HTML markup, images, attached files, and other data. See {{ content_structure_topic }} for more about content entities and fields.{% endtrans %}</p>
+<h2>{% trans %}What is a content type?{% endtrans %}</h2>
+<p>{% trans %}Content items are divided into <em>content types</em>, which are the entity sub-types for the content item entity type; each content type has its own fields and display settings. For example, you might set up content types for pages, articles, recipes, events, and blog entries on your web site.{% endtrans %}</p>
+<h2>{% trans %}Overview of managing content{% endtrans %}</h2>
+<p>{% trans %}The core Node module allows you to define content types, and add and edit content items. The core Field UI module allows you to attach fields to each content type and manage the edit form and display for each content type. See the related topics listed below for specific tasks. Many other core and contributed modules and installation profiles provide pre-defined content types, modify the permission structure for content items, and provide other functionality.{% endtrans %}</p>

core/modules/node/migrations/d6_node.yml

@@ -0,0 +1,57 @@
+# cspell:ignore tnid
+id: d6_node
+label: Nodes
+audit: true
+migration_tags:
+  - Drupal 6
+  - Content
+deriver: Drupal\node\Plugin\migrate\D6NodeDeriver
+source:
+  plugin: d6_node
+process:
+  # In D6, nodes always have a tnid, but it's zero for untranslated nodes.
+  # We normalize it to equal the nid in that case.
+  # @see \Drupal\node\Plugin\migrate\source\d6\Node::prepareRow().
+  # If you are using this file to build a custom migration consider removing
+  # the nid and vid fields to allow incremental migrations.
+  nid: tnid
+  vid: vid
+  langcode:
+    plugin: default_value
+    source: language
+    default_value: "und"
+  title: title
+  uid: node_uid
+  status: status
+  created: created
+  changed: changed
+  promote: promote
+  sticky: sticky
+  'body/format':
+    plugin: migration_lookup
+    migration: d6_filter_format
+    source: format
+  'body/value': body
+  'body/summary': teaser
+  revision_uid: revision_uid
+  revision_log: log
+  revision_timestamp: timestamp
+
+#  unmapped d6 fields.
+#  tnid
+#  translate
+#  moderate
+#  comment
+
+destination:
+  plugin: entity:node
+migration_dependencies:
+  required:
+    - d6_user
+    - d6_node_type
+    - d6_node_settings
+    - d6_filter_format
+  optional:
+    - d6_field_instance_widget_settings
+    - d6_field_formatter_settings
+    - d6_upload_field_instance

core/modules/node/migrations/d6_node_complete.yml

@@ -0,0 +1,59 @@
+# Migrates all revisions and all revision translations.
+# cspell:ignore tnid
+id: d6_node_complete
+label: Node Complete
+audit: true
+migration_tags:
+  - Drupal 6
+  - Content
+class: Drupal\node\Plugin\migrate\D6NodeTranslation
+deriver: Drupal\node\Plugin\migrate\D6NodeDeriver
+source:
+  plugin: d6_node_complete
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the nid and vid fields to allow incremental migrations.
+  # In D6, nodes always have a tnid, but it's zero for untranslated nodes.
+  # We normalize it to equal the nid in that case.
+  # @see \Drupal\node\Plugin\migrate\source\d6\Node::prepareRow().
+  nid: tnid
+  vid: vid
+  langcode:
+    plugin: default_value
+    source: language
+    default_value: "und"
+  title: title
+  uid: node_uid
+  status: status
+  created: created
+  changed: timestamp
+  promote: promote
+  sticky: sticky
+  'body/format':
+    plugin: migration_lookup
+    migration: d6_filter_format
+    source: format
+  'body/value': body
+  'body/summary': teaser
+  revision_uid: revision_uid
+  revision_log: log
+  revision_timestamp: timestamp
+  content_translation_source: source_langcode
+  #  unmapped d6 fields.
+  #  translate
+  #  moderate
+  #  comment
+destination:
+  plugin: entity_complete:node
+  translations: true
+migration_dependencies:
+  required:
+    - d6_user
+    - d6_node_type
+    - d6_node_settings
+    - d6_filter_format
+    - language
+  optional:
+    - d6_field_instance_widget_settings
+    - d6_field_formatter_settings
+    - d6_upload_field_instance

core/modules/node/migrations/d6_node_revision.yml

@@ -0,0 +1,44 @@
+# cspell:ignore tnid
+id: d6_node_revision
+label: Node revisions
+audit: true
+migration_tags:
+  - Drupal 6
+  - Content
+deriver: Drupal\node\Plugin\migrate\D6NodeDeriver
+source:
+  plugin: d6_node_revision
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the nid and vid fields to allow incremental migrations.
+  nid: nid
+  vid: vid
+  langcode:
+    plugin: default_value
+    source: language
+    default_value: "und"
+  title: title
+  uid: node_uid
+  status: status
+  created: created
+  changed: changed
+  promote: promote
+  sticky: sticky
+  'body/format':
+    plugin: migration_lookup
+    migration: d6_filter_format
+    source: format
+  'body/value': body
+  'body/summary': teaser
+  revision_uid: revision_uid
+  revision_log: log
+  revision_timestamp: timestamp
+
+#  unmapped d6 fields.
+#  tnid
+#  translate
+#  moderate
+#  comment
+
+destination:
+  plugin: entity_revision:node

core/modules/node/migrations/d6_node_setting_promote.yml

@@ -0,0 +1,23 @@
+id: d6_node_setting_promote
+label: Node type 'promote' setting
+migration_tags:
+  - Drupal 6
+  - Configuration
+source:
+  plugin: d6_node_type
+  constants:
+    entity_type: node
+    field_name: promote
+process:
+  entity_type: 'constants/entity_type'
+  bundle: type
+  field_name: 'constants/field_name'
+  label:
+    plugin: default_value
+    default_value: 'Promoted to front page'
+  'default_value/0/value': 'options/promote'
+destination:
+  plugin: entity:base_field_override
+migration_dependencies:
+  required:
+    - d6_node_type

core/modules/node/migrations/d6_node_setting_status.yml

@@ -0,0 +1,23 @@
+id: d6_node_setting_status
+label: Node type 'status' setting
+migration_tags:
+  - Drupal 6
+  - Configuration
+source:
+  plugin: d6_node_type
+  constants:
+    entity_type: node
+    field_name: status
+process:
+  entity_type: 'constants/entity_type'
+  bundle: type
+  field_name: 'constants/field_name'
+  label:
+    plugin: default_value
+    default_value: 'Publishing status'
+  'default_value/0/value': 'options/status'
+destination:
+  plugin: entity:base_field_override
+migration_dependencies:
+  required:
+    - d6_node_type

core/modules/node/migrations/d6_node_setting_sticky.yml

@@ -0,0 +1,23 @@
+id: d6_node_setting_sticky
+label: Node type 'sticky' setting
+migration_tags:
+  - Drupal 6
+  - Configuration
+source:
+  plugin: d6_node_type
+  constants:
+    entity_type: node
+    field_name: sticky
+process:
+  entity_type: 'constants/entity_type'
+  bundle: type
+  field_name: 'constants/field_name'
+  label:
+    plugin: default_value
+    default_value: 'Sticky at the top of lists'
+  'default_value/0/value': 'options/sticky'
+destination:
+  plugin: entity:base_field_override
+migration_dependencies:
+  required:
+    - d6_node_type

core/modules/node/migrations/d6_node_settings.yml

@@ -0,0 +1,15 @@
+id: d6_node_settings
+label: Node configuration
+migration_tags:
+  - Drupal 6
+  - Configuration
+source:
+  plugin: variable
+  variables:
+    - node_admin_theme
+  source_module: node
+process:
+  use_admin_theme: node_admin_theme
+destination:
+  plugin: config
+  config_name: node.settings

core/modules/node/migrations/d6_node_type.yml

@@ -0,0 +1,43 @@
+id: d6_node_type
+label: Node type configuration
+migration_tags:
+  - Drupal 6
+  - Configuration
+source:
+  plugin: d6_node_type
+  constants:
+    preview: 1 # DRUPAL_OPTIONAL
+    create_body: false
+process:
+  type: type
+  name: name
+  module: module
+  description: description
+  help: help
+  title_label: title_label
+  'preview_mode': 'constants/preview'
+  'display_submitted': display_submitted
+  'new_revision': 'options/revision'
+  'settings/node/options': options
+  create_body: has_body
+  create_body_label: body_label
+  'third_party_settings/menu_ui/available_menus':
+    plugin: static_map
+    bypass: true
+    source: available_menus
+    map:
+      main-menu: main
+      management: admin
+      navigation: tools
+      user-menu: account
+  'third_party_settings/menu_ui/parent':
+    plugin: static_map
+    bypass: true
+    source: parent
+    map:
+      'main-menu:': 'main:'
+      'management:': 'admin:'
+      'navigation:': 'tools:'
+      'user-menu:': 'account:'
+destination:
+  plugin: entity:node_type

core/modules/node/migrations/d6_view_modes.yml

@@ -0,0 +1,39 @@
+id: d6_view_modes
+label: View modes
+migration_tags:
+  - Drupal 6
+  - Configuration
+source:
+  plugin: d6_view_mode
+  constants:
+    entity_type: node
+    status: true
+process:
+  mode:
+    plugin: static_map
+    source: view_mode
+    map:
+      0: normal
+      1: preview
+      2: search_index
+      3: search_result
+      4: rss
+      5: print
+      teaser: teaser
+      full: full
+  label:
+    plugin: static_map
+    source: view_mode
+    map:
+      0: "Normal"
+      1: "Preview"
+      2: "Search index"
+      3: "Search result"
+      4: "RSS"
+      5: "Print"
+      teaser: "Teaser"
+      full: "Full"
+  targetEntityType: 'constants/entity_type'
+  status: 'constants/status'
+destination:
+  plugin: entity:entity_view_mode

core/modules/node/migrations/d7_node.yml

@@ -0,0 +1,41 @@
+# cspell:ignore tnid
+id: d7_node
+label: Nodes
+audit: true
+migration_tags:
+  - Drupal 7
+  - Content
+deriver: Drupal\node\Plugin\migrate\D7NodeDeriver
+source:
+  plugin: d7_node
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the nid and vid fields to allow incremental migrations.
+  # In D7, nodes always have a tnid, but it's zero for untranslated nodes.
+  # We normalize it to equal the nid in that case.
+  # @see \Drupal\node\Plugin\migrate\source\d7\Node::prepareRow().
+  nid: tnid
+  vid: vid
+  langcode:
+    plugin: default_value
+    source: language
+    default_value: "und"
+  title: title
+  uid: node_uid
+  status: status
+  created: created
+  changed: changed
+  promote: promote
+  sticky: sticky
+  revision_uid: revision_uid
+  revision_log: log
+  revision_timestamp: timestamp
+destination:
+  plugin: entity:node
+migration_dependencies:
+  required:
+    - d7_user
+    - d7_node_type
+  optional:
+    - d7_field_instance
+    - d7_comment_field_instance

core/modules/node/migrations/d7_node_complete.yml

@@ -0,0 +1,49 @@
+# Migrates all revisions and all revision translations.
+# cspell:ignore tnid
+id: d7_node_complete
+label: Node complete
+audit: true
+migration_tags:
+  - Drupal 7
+  - Content
+class: Drupal\node\Plugin\migrate\D7NodeTranslation
+deriver: Drupal\node\Plugin\migrate\D7NodeDeriver
+source:
+  plugin: d7_node_complete
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the nid and vid fields to allow incremental migrations.
+  # In D7, nodes always have a tnid, but it's zero for untranslated nodes.
+  # We normalize it to equal the nid in that case.
+  # @see \Drupal\node\Plugin\migrate\source\d7\Node::prepareRow().
+  nid: tnid
+  vid: vid
+  langcode:
+    plugin: default_value
+    source: language
+    default_value: "und"
+  title: title
+  uid: node_uid
+  status: status
+  created: created
+  changed: timestamp
+  promote: promote
+  sticky: sticky
+  revision_uid: revision_uid
+  revision_log: log
+  revision_timestamp: timestamp
+  content_translation_source: source_langcode
+  #  unmapped d6 fields.
+  #  translate
+  #  comment
+destination:
+  plugin: entity_complete:node
+  translations: true
+migration_dependencies:
+  required:
+    - d7_user
+    - d7_node_type
+    - language
+  optional:
+    - d7_field_instance
+    - d7_comment_field_instance

core/modules/node/migrations/d7_node_revision.yml

@@ -0,0 +1,33 @@
+id: d7_node_revision
+label: Node revisions
+audit: true
+migration_tags:
+  - Drupal 7
+  - Content
+deriver: Drupal\node\Plugin\migrate\D7NodeDeriver
+source:
+  plugin: d7_node_revision
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the nid and vid fields to allow incremental migrations.
+  nid: nid
+  vid: vid
+  langcode:
+    plugin: default_value
+    source: language
+    default_value: "und"
+  title: title
+  uid: node_uid
+  status: status
+  created: created
+  changed: changed
+  promote: promote
+  sticky: sticky
+  revision_uid: revision_uid
+  revision_log: log
+  revision_timestamp: timestamp
+destination:
+  plugin: entity_revision:node
+migration_dependencies:
+  required:
+    - d7_node

core/modules/node/migrations/d7_node_settings.yml

@@ -0,0 +1,15 @@
+id: d7_node_settings
+label: Node configuration
+migration_tags:
+  - Drupal 7
+  - Configuration
+source:
+  plugin: variable
+  variables:
+    - node_admin_theme
+  source_module: node
+process:
+  use_admin_theme: node_admin_theme
+destination:
+  plugin: config
+  config_name: node.settings

core/modules/node/migrations/d7_node_title_label.yml

@@ -0,0 +1,29 @@
+id: d7_node_title_label
+label: Node title label
+migration_tags:
+  - Drupal 7
+  - Configuration
+source:
+  plugin: d7_node_type
+  constants:
+    entity_type: node
+    field_name: title
+process:
+  label:
+    -
+      plugin: static_map
+      source: title_label
+      bypass: true
+      map:
+        Title: 0
+    -
+      plugin: skip_on_empty
+      method: row
+  entity_type: 'constants/entity_type'
+  bundle: type
+  field_name: 'constants/field_name'
+destination:
+  plugin: entity:base_field_override
+migration_dependencies:
+  required:
+    - d7_node_type

core/modules/node/migrations/d7_node_type.yml

@@ -0,0 +1,40 @@
+id: d7_node_type
+label: Node type configuration
+migration_tags:
+  - Drupal 7
+  - Configuration
+source:
+  plugin: d7_node_type
+  constants:
+    preview: 1 # DRUPAL_OPTIONAL
+process:
+  type: type
+  name: name
+  description: description
+  help: help
+  title_label: title_label
+  preview_mode: 'constants/preview'
+  display_submitted: display_submitted
+  new_revision: 'options/revision'
+  create_body: create_body
+  create_body_label: body_label
+  'third_party_settings/menu_ui/available_menus':
+    plugin: static_map
+    bypass: true
+    source: available_menus
+    map:
+      main-menu: main
+      management: admin
+      navigation: tools
+      user-menu: account
+  'third_party_settings/menu_ui/parent':
+    plugin: static_map
+    bypass: true
+    source: parent
+    map:
+      'main-menu:0:': 'main:'
+      'management:0:': 'admin:'
+      'navigation:0:': 'tools:'
+      'user-menu:0:': 'account:'
+destination:
+  plugin: entity:node_type

core/modules/node/migrations/state/node.migrate_drupal.yml

@@ -0,0 +1,10 @@
+finished:
+  6:
+    # Blog requires node.
+    blog: node
+    content: node
+    node: node
+  7:
+    # Blog requires node.
+    blog: node
+    node: node

core/modules/node/node.admin.inc

@@ -0,0 +1,178 @@
+<?php
+
+/**
+ * @file
+ * Content administration and module settings user interface.
+ */
+
+use Drupal\Core\Batch\BatchBuilder;
+use Drupal\Core\Link;
+use Drupal\node\NodeInterface;
+
+/**
+ * Updates all nodes in the passed-in array with the passed-in field values.
+ *
+ * IMPORTANT NOTE: This function is intended to work when called from a form
+ * submission handler. Calling it outside of the form submission process may not
+ * work correctly.
+ *
+ * @param array $nodes
+ *   Array of node nids or nodes to update.
+ * @param array $updates
+ *   Array of key/value pairs with node field names and the value to update that
+ *   field to.
+ * @param string $langcode
+ *   (optional) The language updates should be applied to. If none is specified
+ *   all available languages are processed.
+ * @param bool $load
+ *   (optional) TRUE if $nodes contains an array of node IDs to be loaded, FALSE
+ *   if it contains fully loaded nodes. Defaults to FALSE.
+ * @param bool $revisions
+ *   (optional) TRUE if $nodes contains an array of revision IDs instead of
+ *   node IDs. Defaults to FALSE; will be ignored if $load is FALSE.
+ */
+function node_mass_update(array $nodes, array $updates, $langcode = NULL, $load = FALSE, $revisions = FALSE) {
+  // We use batch processing to prevent timeout when updating a large number
+  // of nodes.
+  if (count($nodes) > 10) {
+    $batch_builder = (new BatchBuilder())
+      // The operations do not live in the .module file, so we need to
+      // tell the batch engine which file to load before calling them.
+      ->setFile(\Drupal::service('extension.list.module')->getPath('node') . '/node.admin.inc')
+      ->addOperation('_node_mass_update_batch_process', [$nodes, $updates, $langcode, $load, $revisions])
+      ->setFinishCallback('_node_mass_update_batch_finished')
+      ->setTitle(t('Processing'))
+      ->setErrorMessage(t('The update has encountered an error.'))
+      // We use a single multi-pass operation, so the default
+      // 'Remaining x of y operations' message will be confusing here.
+      ->setProgressMessage('');
+    batch_set($batch_builder->toArray());
+  }
+  else {
+    $storage = \Drupal::entityTypeManager()->getStorage('node');
+    if ($load && !$revisions) {
+      $nodes = $storage->loadMultiple($nodes);
+    }
+    foreach ($nodes as $node) {
+      if ($load && $revisions) {
+        $node = $storage->loadRevision($node);
+      }
+      _node_mass_update_helper($node, $updates, $langcode);
+    }
+    \Drupal::messenger()->addStatus(t('The update has been performed.'));
+  }
+}
+
+/**
+ * Updates individual nodes when fewer than 10 are queued.
+ *
+ * @param \Drupal\node\NodeInterface $node
+ *   A node to update.
+ * @param array $updates
+ *   Associative array of updates.
+ * @param string $langcode
+ *   (optional) The language updates should be applied to. If none is specified
+ *   all available languages are processed.
+ *
+ * @return \Drupal\node\NodeInterface
+ *   An updated node object.
+ *
+ * @see node_mass_update()
+ */
+function _node_mass_update_helper(NodeInterface $node, array $updates, $langcode = NULL) {
+  $langcodes = isset($langcode) ? [$langcode] : array_keys($node->getTranslationLanguages());
+  // For efficiency manually save the original node before applying any changes.
+  $node->original = clone $node;
+  foreach ($langcodes as $langcode) {
+    foreach ($updates as $name => $value) {
+      $node->getTranslation($langcode)->$name = $value;
+    }
+  }
+  $node->save();
+  return $node;
+}
+
+/**
+ * Implements callback_batch_operation().
+ *
+ * Executes a batch operation for node_mass_update().
+ *
+ * @param array $nodes
+ *   An array of node IDs.
+ * @param array $updates
+ *   Associative array of updates.
+ * @param string $langcode
+ *   The language updates should be applied to. If none is specified all
+ *   available languages are processed.
+ * @param bool $load
+ *   TRUE if $nodes contains an array of node IDs to be loaded, FALSE if it
+ *   contains fully loaded nodes.
+ * @param bool $revisions
+ *   (optional) TRUE if $nodes contains an array of revision IDs instead of
+ *   node IDs. Defaults to FALSE; will be ignored if $load is FALSE.
+ * @param array|\ArrayAccess $context
+ *   An array of contextual key/values.
+ */
+function _node_mass_update_batch_process(array $nodes, array $updates, $langcode, $load, $revisions, &$context) {
+  if (!isset($context['sandbox']['progress'])) {
+    $context['sandbox']['progress'] = 0;
+    $context['sandbox']['max'] = count($nodes);
+    $context['sandbox']['nodes'] = $nodes;
+  }
+
+  // Process nodes by groups of 5.
+  $storage = \Drupal::entityTypeManager()->getStorage('node');
+  $count = min(5, count($context['sandbox']['nodes']));
+  for ($i = 1; $i <= $count; $i++) {
+    // For each nid, load the node, reset the values, and save it.
+    $node = array_shift($context['sandbox']['nodes']);
+    if ($load) {
+      $node = $revisions ?
+        $storage->loadRevision($node) : $storage->load($node);
+    }
+    $node = _node_mass_update_helper($node, $updates, $langcode);
+
+    // Store result for post-processing in the finished callback.
+    $context['results'][] = Link::fromTextAndUrl($node->label(), $node->toUrl())->toString();
+
+    // Update our progress information.
+    $context['sandbox']['progress']++;
+  }
+
+  // Inform the batch engine that we are not finished,
+  // and provide an estimation of the completion level we reached.
+  if ($context['sandbox']['progress'] != $context['sandbox']['max']) {
+    $context['finished'] = $context['sandbox']['progress'] / $context['sandbox']['max'];
+  }
+}
+
+/**
+ * Implements callback_batch_finished().
+ *
+ * Reports the 'finished' status of batch operation for node_mass_update().
+ *
+ * @param bool $success
+ *   A boolean indicating whether the batch mass update operation successfully
+ *   concluded.
+ * @param string[] $results
+ *   An array of rendered links to nodes updated via the batch mode process.
+ * @param array $operations
+ *   An array of function calls (not used in this function).
+ *
+ * @see _node_mass_update_batch_process()
+ */
+function _node_mass_update_batch_finished($success, $results, $operations) {
+  if ($success) {
+    \Drupal::messenger()->addStatus(t('The update has been performed.'));
+  }
+  else {
+    \Drupal::messenger()->addError(t('An error occurred and processing did not complete.'));
+    $message = \Drupal::translation()->formatPlural(count($results), '1 item successfully processed:', '@count items successfully processed:');
+    $item_list = [
+      '#theme' => 'item_list',
+      '#items' => $results,
+    ];
+    $message .= \Drupal::service('renderer')->render($item_list);
+    \Drupal::messenger()->addStatus($message);
+  }
+}

core/modules/node/node.api.php

@@ -0,0 +1,430 @@
+<?php
+
+/**
+ * @file
+ * Hooks specific to the Node module.
+ */
+
+use Drupal\node\NodeInterface;
+use Drupal\Component\Utility\Html;
+use Drupal\Component\Utility\Xss;
+
+/**
+ * @addtogroup hooks
+ * @{
+ */
+
+/**
+ * Inform the node access system what permissions the user has.
+ *
+ * This hook is for implementation by node access modules. In this hook,
+ * the module grants a user different "grant IDs" within one or more
+ * "realms". In hook_node_access_records(), the realms and grant IDs are
+ * associated with permission to view, edit, and delete individual nodes.
+ *
+ * Grant IDs can be arbitrarily defined by a node access module using a list of
+ * integer IDs associated with users.
+ *
+ * A node access module may implement as many realms as necessary to properly
+ * define the access privileges for the nodes. Note that the system makes no
+ * distinction between published and unpublished nodes. It is the module's
+ * responsibility to provide appropriate realms to limit access to unpublished
+ * content.
+ *
+ * Node access records are stored in the {node_access} table and define which
+ * grants are required to access a node. There is a special case for the view
+ * operation -- a record with node ID 0 corresponds to a "view all" grant for
+ * the realm and grant ID of that record. If there are no node access modules
+ * enabled, the core node module adds a node ID 0 record for realm 'all'. Node
+ * access modules can also grant "view all" permission on their custom realms;
+ * for example, a module could create a record in {node_access} with:
+ * @code
+ * $record = [
+ *   'nid' => 0,
+ *   'gid' => 888,
+ *   'realm' => 'example_realm',
+ *   'grant_view' => 1,
+ *   'grant_update' => 0,
+ *   'grant_delete' => 0,
+ * ];
+ * \Drupal::database()->insert('node_access')->fields($record)->execute();
+ * @endcode
+ * And then in its hook_node_grants() implementation, it would need to return:
+ * @code
+ * if ($op == 'view') {
+ *   $grants['example_realm'] = [888];
+ * }
+ * @endcode
+ * If you decide to do this, be aware that the node_access_rebuild() function
+ * will erase any node ID 0 entry when it is called, so you will need to make
+ * sure to restore your {node_access} record after node_access_rebuild() is
+ * called.
+ *
+ * @param \Drupal\Core\Session\AccountInterface $account
+ *   The account object whose grants are requested.
+ * @param string $operation
+ *   The node operation to be performed, such as 'view', 'update', or 'delete'.
+ *
+ * @return array
+ *   An array whose keys are "realms" of grants, and whose values are arrays of
+ *   the grant IDs within this realm that this user is being granted.
+ *
+ * @see node_access_view_all_nodes()
+ * @see node_access_rebuild()
+ * @ingroup node_access
+ */
+function hook_node_grants(\Drupal\Core\Session\AccountInterface $account, $operation) {
+  if ($account->hasPermission('access private content')) {
+    $grants['example'] = [1];
+  }
+  if ($account->id()) {
+    $grants['example_author'] = [$account->id()];
+  }
+  return $grants;
+}
+
+/**
+ * Set permissions for a node to be written to the database.
+ *
+ * When a node is saved, a module implementing hook_node_access_records() will
+ * be asked if it is interested in the access permissions for a node. If it is
+ * interested, it must respond with an array of permissions arrays for that
+ * node.
+ *
+ * Node access grants apply regardless of the published or unpublished status
+ * of the node. Implementations must make sure not to grant access to
+ * unpublished nodes if they don't want to change the standard access control
+ * behavior. Your module may need to create a separate access realm to handle
+ * access to unpublished nodes.
+ *
+ * Note that the grant values in the return value from your hook must be
+ * integers and not boolean TRUE and FALSE.
+ *
+ * Each permissions item in the array is an array with the following elements:
+ * - 'realm': The name of a realm that the module has defined in
+ *   hook_node_grants().
+ * - 'gid': A 'grant ID' from hook_node_grants().
+ * - 'grant_view': If set to 1 a user that has been identified as a member
+ *   of this gid within this realm can view this node. This should usually be
+ *   set to $node->isPublished(). Failure to do so may expose unpublished content
+ *   to some users.
+ * - 'grant_update': If set to 1 a user that has been identified as a member
+ *   of this gid within this realm can edit this node.
+ * - 'grant_delete': If set to 1 a user that has been identified as a member
+ *   of this gid within this realm can delete this node.
+ * - langcode: (optional) The language code of a specific translation of the
+ *   node, if any. Modules may add this key to grant different access to
+ *   different translations of a node, such that (e.g.) a particular group is
+ *   granted access to edit the Catalan version of the node, but not the
+ *   Hungarian version. If no value is provided, the langcode is set
+ *   automatically from the $node parameter and the node's original language (if
+ *   specified) is used as a fallback. Only specify multiple grant records with
+ *   different languages for a node if the site has those languages configured.
+ *
+ * A "deny all" grant may be used to deny all access to a particular node or
+ * node translation:
+ * @code
+ * $grants[] = [
+ *   'realm' => 'all',
+ *   'gid' => 0,
+ *   'grant_view' => 0,
+ *   'grant_update' => 0,
+ *   'grant_delete' => 0,
+ *   'langcode' => 'ca',
+ * ];
+ * @endcode
+ * Note that another module node access module could override this by granting
+ * access to one or more nodes, since grants are additive. To enforce that
+ * access is denied in a particular case, use hook_node_access_records_alter().
+ * Also note that a deny all is not written to the database; denies are
+ * implicit.
+ *
+ * @param \Drupal\node\NodeInterface $node
+ *   The node that has just been saved.
+ *
+ * @return array|null
+ *   An array of grants as defined above.
+ *
+ * @see hook_node_access_records_alter()
+ * @ingroup node_access
+ */
+function hook_node_access_records(\Drupal\node\NodeInterface $node) {
+  // We only care about the node if it has been marked private. If not, it is
+  // treated just like any other node and we completely ignore it.
+  if ($node->private->value) {
+    $grants = [];
+    // Only published Catalan translations of private nodes should be viewable
+    // to all users. If we fail to check $node->isPublished(), all users would be able
+    // to view an unpublished node.
+    if ($node->isPublished()) {
+      $grants[] = [
+        'realm' => 'example',
+        'gid' => 1,
+        'grant_view' => 1,
+        'grant_update' => 0,
+        'grant_delete' => 0,
+        'langcode' => 'ca',
+      ];
+    }
+    // For the example_author array, the GID is equivalent to a UID, which
+    // means there are many groups of just 1 user.
+    // Note that an author can always view nodes they own, even if they have
+    // status unpublished.
+    if ($node->getOwnerId()) {
+      $grants[] = [
+        'realm' => 'example_author',
+        'gid' => $node->getOwnerId(),
+        'grant_view' => 1,
+        'grant_update' => 1,
+        'grant_delete' => 1,
+        'langcode' => 'ca',
+      ];
+    }
+
+    return $grants;
+  }
+}
+
+/**
+ * Alter permissions for a node before it is written to the database.
+ *
+ * Node access modules establish rules for user access to content. Node access
+ * records are stored in the {node_access} table and define which permissions
+ * are required to access a node. This hook is invoked after node access modules
+ * returned their requirements via hook_node_access_records(); doing so allows
+ * modules to modify the $grants array by reference before it is stored, so
+ * custom or advanced business logic can be applied.
+ *
+ * Upon viewing, editing or deleting a node, hook_node_grants() builds a
+ * permissions array that is compared against the stored access records. The
+ * user must have one or more matching permissions in order to complete the
+ * requested operation.
+ *
+ * A module may deny all access to a node by setting $grants to an empty array.
+ *
+ * The preferred use of this hook is in a module that bridges multiple node
+ * access modules with a configurable behavior, as shown in the example with the
+ * 'is_preview' field.
+ *
+ * @param array $grants
+ *   The $grants array returned by hook_node_access_records().
+ * @param \Drupal\node\NodeInterface $node
+ *   The node for which the grants were acquired.
+ *
+ * @see hook_node_access_records()
+ * @see hook_node_grants()
+ * @see hook_node_grants_alter()
+ * @ingroup node_access
+ */
+function hook_node_access_records_alter(&$grants, \Drupal\node\NodeInterface $node) {
+  // Our module allows editors to mark specific articles with the 'is_preview'
+  // field. If the node being saved has a TRUE value for that field, then only
+  // our grants are retained, and other grants are removed. Doing so ensures
+  // that our rules are enforced no matter what priority other grants are given.
+  if ($node->is_preview) {
+    // Our module grants are set in $grants['example'].
+    $temp = $grants['example'];
+    // Now remove all module grants but our own.
+    $grants = ['example' => $temp];
+  }
+}
+
+/**
+ * Alter user access rules when trying to view, edit or delete a node.
+ *
+ * Node access modules establish rules for user access to content.
+ * hook_node_grants() defines permissions for a user to view, edit or delete
+ * nodes by building a $grants array that indicates the permissions assigned to
+ * the user by each node access module. This hook is called to allow modules to
+ * modify the $grants array by reference, so the interaction of multiple node
+ * access modules can be altered or advanced business logic can be applied.
+ *
+ * The resulting grants are then checked against the records stored in the
+ * {node_access} table to determine if the operation may be completed.
+ *
+ * A module may deny all access to a user by setting $grants to an empty array.
+ *
+ * Developers may use this hook to either add additional grants to a user or to
+ * remove existing grants. These rules are typically based on either the
+ * permissions assigned to a user role, or specific attributes of a user
+ * account.
+ *
+ * @param array $grants
+ *   The $grants array returned by hook_node_grants().
+ * @param \Drupal\Core\Session\AccountInterface $account
+ *   The account requesting access to content.
+ * @param string $operation
+ *   The operation being performed, 'view', 'update' or 'delete'.
+ *
+ * @see hook_node_grants()
+ * @see hook_node_access_records()
+ * @see hook_node_access_records_alter()
+ * @ingroup node_access
+ */
+function hook_node_grants_alter(&$grants, \Drupal\Core\Session\AccountInterface $account, $operation) {
+  // Our sample module never allows certain roles to edit or delete
+  // content. Since some other node access modules might allow this
+  // permission, we expressly remove it by returning an empty $grants
+  // array for roles specified in our variable setting.
+
+  // Get our list of banned roles.
+  $restricted = \Drupal::config('example.settings')->get('restricted_roles');
+
+  if ($operation != 'view' && !empty($restricted)) {
+    // Now check the roles for this account against the restrictions.
+    foreach ($account->getRoles() as $rid) {
+      if (in_array($rid, $restricted)) {
+        $grants = [];
+      }
+    }
+  }
+}
+
+/**
+ * Act on a node being displayed as a search result.
+ *
+ * This hook is invoked from the node search plugin during search execution,
+ * after loading and rendering the node.
+ *
+ * @param \Drupal\node\NodeInterface $node
+ *   The node being displayed in a search result.
+ *
+ * @return array
+ *   Extra information to be displayed with search result. This information
+ *   should be presented as an associative array. It will be concatenated with
+ *   the post information (last updated, author) in the default search result
+ *   theming.
+ *
+ * @see template_preprocess_search_result()
+ * @see search-result.html.twig
+ *
+ * @ingroup entity_crud
+ */
+function hook_node_search_result(\Drupal\node\NodeInterface $node) {
+  $rating = \Drupal::database()->query('SELECT SUM([points]) FROM {my_rating} WHERE [nid] = :nid', ['nid' => $node->id()])->fetchField();
+  return ['rating' => \Drupal::translation()->formatPlural($rating, '1 point', '@count points')];
+}
+
+/**
+ * Act on a node being indexed for searching.
+ *
+ * This hook is invoked during search indexing, after loading, and after the
+ * result of rendering is added as $node->rendered to the node object.
+ *
+ * @param \Drupal\node\NodeInterface $node
+ *   The node being indexed.
+ *
+ * @return string
+ *   Additional node information to be indexed.
+ *
+ * @ingroup entity_crud
+ */
+function hook_node_update_index(\Drupal\node\NodeInterface $node) {
+  $text = '';
+  $ratings = \Drupal::database()->query('SELECT [title], [description] FROM {my_ratings} WHERE [nid] = :nid', [':nid' => $node->id()]);
+  foreach ($ratings as $rating) {
+    $text .= '<h2>' . Html::escape($rating->title) . '</h2>' . Xss::filter($rating->description);
+  }
+  return $text;
+}
+
+/**
+ * Provide additional methods of scoring for core search results for nodes.
+ *
+ * A node's search score is used to rank it among other nodes matched by the
+ * search, with the highest-ranked nodes appearing first in the search listing.
+ *
+ * For example, a module allowing users to vote on content could expose an
+ * option to allow search results' rankings to be influenced by the average
+ * voting score of a node.
+ *
+ * All scoring mechanisms are provided as options to site administrators, and
+ * may be tweaked based on individual sites or disabled altogether if they do
+ * not make sense. Individual scoring mechanisms, if enabled, are assigned a
+ * weight from 1 to 10. The weight represents the factor of magnification of
+ * the ranking mechanism, with higher-weighted ranking mechanisms having more
+ * influence. In order for the weight system to work, each scoring mechanism
+ * must return a value between 0 and 1 for every node. That value is then
+ * multiplied by the administrator-assigned weight for the ranking mechanism,
+ * and then the weighted scores from all ranking mechanisms are added, which
+ * brings about the same result as a weighted average.
+ *
+ * @return array
+ *   An associative array of ranking data. The keys should be strings,
+ *   corresponding to the internal name of the ranking mechanism, such as
+ *   'recent', or 'comments'. The values should be arrays themselves, with the
+ *   following keys available:
+ *   - title: (required) The human readable name of the ranking mechanism.
+ *   - join: (optional) An array with information to join any additional
+ *     necessary table. This is not necessary if the table required is already
+ *     joined to by the base query, such as for the {node} table. Other tables
+ *     should use the full table name as an alias to avoid naming collisions.
+ *   - score: (required) The part of a query string to calculate the score for
+ *     the ranking mechanism based on values in the database. This does not need
+ *     to be wrapped in parentheses, as it will be done automatically; it also
+ *     does not need to take the weighted system into account, as it will be
+ *     done automatically. It does, however, need to calculate a decimal between
+ *     0 and 1; be careful not to cast the entire score to an integer by
+ *     inadvertently introducing a variable argument.
+ *   - arguments: (optional) If any arguments are required for the score, they
+ *     can be specified in an array here.
+ *
+ * @ingroup entity_crud
+ */
+function hook_ranking() {
+  // If voting is disabled, we can avoid returning the array, no hard feelings.
+  if (\Drupal::config('vote.settings')->get('node_enabled')) {
+    return [
+      'vote_average' => [
+        'title' => t('Average vote'),
+        // Note that we use i.sid, the search index's search item id, rather than
+        // n.nid.
+        'join' => [
+          'type' => 'LEFT',
+          'table' => 'vote_node_data',
+          'alias' => 'vote_node_data',
+          'on' => 'vote_node_data.nid = i.sid',
+        ],
+        // The highest possible score should be 1, and the lowest possible score,
+        // always 0, should be 0.
+        'score' => 'vote_node_data.average / CAST(%f AS DECIMAL)',
+        // Pass in the highest possible voting score as a decimal argument.
+        'arguments' => [\Drupal::config('vote.settings')->get('score_max')],
+      ],
+    ];
+  }
+}
+
+/**
+ * Alter the links of a node.
+ *
+ * @param array &$links
+ *   A renderable array representing the node links.
+ * @param \Drupal\node\NodeInterface $entity
+ *   The node being rendered.
+ * @param array &$context
+ *   Various aspects of the context in which the node links are going to be
+ *   displayed, with the following keys:
+ *   - 'view_mode': the view mode in which the node is being viewed
+ *   - 'langcode': the language in which the node is being viewed
+ *
+ * @see \Drupal\node\NodeViewBuilder::renderLinks()
+ * @see \Drupal\node\NodeViewBuilder::buildLinks()
+ * @see entity_crud
+ */
+function hook_node_links_alter(array &$links, NodeInterface $entity, array &$context) {
+  $links['my_module'] = [
+    '#theme' => 'links__node__my_module',
+    '#attributes' => ['class' => ['links', 'inline']],
+    '#links' => [
+      'node-report' => [
+        'title' => t('Report'),
+        'url' => Url::fromRoute('node_test.report', ['node' => $entity->id()], ['query' => ['token' => \Drupal::getContainer()->get('csrf_token')->get("node/{$entity->id()}/report")]]),
+      ],
+    ],
+  ];
+}
+
+/**
+ * @} End of "addtogroup hooks".
+ */

core/modules/node/node.info.yml

@@ -0,0 +1,13 @@
+name: Node
+type: module
+description: 'Manages the creation, configuration, and display of the main site content.'
+package: Core
+# version: VERSION
+configure: entity.node_type.collection
+dependencies:
+  - drupal:text
+
+# Information added by Drupal.org packaging script on 2024-07-04
+version: '10.3.1'
+project: 'drupal'
+datestamp: 1720094222

core/modules/node/node.install

@@ -0,0 +1,162 @@
+<?php
+
+/**
+ * @file
+ * Install, update and uninstall functions for the node module.
+ */
+
+use Drupal\Core\Url;
+use Drupal\Core\Database\Database;
+use Drupal\user\RoleInterface;
+
+/**
+ * Implements hook_requirements().
+ */
+function node_requirements($phase) {
+  $requirements = [];
+  if ($phase === 'runtime') {
+    // Only show rebuild button if there are either 0, or 2 or more, rows
+    // in the {node_access} table, or if there are modules that
+    // implement hook_node_grants().
+    $grant_count = \Drupal::entityTypeManager()->getAccessControlHandler('node')->countGrants();
+    if ($grant_count != 1 || \Drupal::moduleHandler()->hasImplementations('node_grants')) {
+      $value = \Drupal::translation()->formatPlural($grant_count, 'One permission in use', '@count permissions in use', ['@count' => $grant_count]);
+    }
+    else {
+      $value = t('Disabled');
+    }
+
+    $requirements['node_access'] = [
+      'title' => t('Node Access Permissions'),
+      'value' => $value,
+      'description' => t('If the site is experiencing problems with permissions to content, you may have to rebuild the permissions cache. Rebuilding will remove all privileges to content and replace them with permissions based on the current modules and settings. Rebuilding may take some time if there is a lot of content or complex permission settings. After rebuilding has completed, content will automatically use the new permissions. <a href=":rebuild">Rebuild permissions</a>', [
+        ':rebuild' => Url::fromRoute('node.configure_rebuild_confirm')->toString(),
+      ]),
+    ];
+  }
+  return $requirements;
+}
+
+/**
+ * Implements hook_schema().
+ */
+function node_schema() {
+  $schema['node_access'] = [
+    'description' => 'Identifies which realm/grant pairs a user must possess in order to view, update, or delete specific nodes.',
+    'fields' => [
+      'nid' => [
+        'description' => 'The {node}.nid this record affects.',
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+      ],
+      'langcode' => [
+        'description' => 'The {language}.langcode of this node.',
+        'type' => 'varchar_ascii',
+        'length' => 12,
+        'not null' => TRUE,
+        'default' => '',
+      ],
+      'fallback' => [
+        'description' => 'Boolean indicating whether this record should be used as a fallback if a language condition is not provided.',
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 1,
+        'size' => 'tiny',
+      ],
+      'gid' => [
+        'description' => "The grant ID a user must possess in the specified realm to gain this row's privileges on the node.",
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+      ],
+      'realm' => [
+        'description' => 'The realm in which the user must possess the grant ID. Modules can define one or more realms by implementing hook_node_grants().',
+        'type' => 'varchar_ascii',
+        'length' => 255,
+        'not null' => TRUE,
+        'default' => '',
+      ],
+      'grant_view' => [
+        'description' => 'Boolean indicating whether a user with the realm/grant pair can view this node.',
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+        'size' => 'tiny',
+      ],
+      'grant_update' => [
+        'description' => 'Boolean indicating whether a user with the realm/grant pair can edit this node.',
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+        'size' => 'tiny',
+      ],
+      'grant_delete' => [
+        'description' => 'Boolean indicating whether a user with the realm/grant pair can delete this node.',
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+        'size' => 'tiny',
+      ],
+    ],
+    'primary key' => ['nid', 'gid', 'realm', 'langcode'],
+    'foreign keys' => [
+      'affected_node' => [
+        'table' => 'node',
+        'columns' => ['nid' => 'nid'],
+      ],
+    ],
+  ];
+
+  return $schema;
+}
+
+/**
+ * Implements hook_install().
+ */
+function node_install() {
+  // Enable default permissions for system roles.
+  // IMPORTANT: Modules SHOULD NOT automatically grant any user role access
+  // permissions in hook_install().
+  // However, the 'access content' permission is a very special case, since
+  // there is hardly a point in installing the Node module without granting
+  // these permissions. Doing so also allows tests to continue to operate as
+  // expected without first having to manually grant these default permissions.
+  if (\Drupal::moduleHandler()->moduleExists('user')) {
+    user_role_grant_permissions(RoleInterface::ANONYMOUS_ID, ['access content']);
+    user_role_grant_permissions(RoleInterface::AUTHENTICATED_ID, ['access content']);
+  }
+
+  // Populate the node access table.
+  Database::getConnection()->insert('node_access')
+    ->fields([
+      'nid' => 0,
+      'gid' => 0,
+      'realm' => 'all',
+      'grant_view' => 1,
+      'grant_update' => 0,
+      'grant_delete' => 0,
+    ])
+    ->execute();
+}
+
+/**
+ * Implements hook_uninstall().
+ */
+function node_uninstall() {
+  // Delete remaining general module variables.
+  \Drupal::state()->delete('node.node_access_needs_rebuild');
+}
+
+/**
+ * Implements hook_update_last_removed().
+ */
+function node_update_last_removed() {
+  return 8700;
+}

core/modules/node/node.js

@@ -0,0 +1,57 @@
+/**
+ * @file
+ * Defines JavaScript behaviors for the node module.
+ */
+
+(function ($, Drupal, drupalSettings) {
+  /**
+   * Behaviors for tabs in the node edit form.
+   *
+   * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches summary behavior for tabs in the node edit form.
+   */
+  Drupal.behaviors.nodeDetailsSummaries = {
+    attach(context) {
+      const $context = $(context);
+
+      $context.find('.node-form-author').drupalSetSummary((context) => {
+        const nameElement = context.querySelector('.field--name-uid input');
+        const name = nameElement && nameElement.value;
+        const dateElement = context.querySelector('.field--name-created input');
+        const date = dateElement && dateElement.value;
+
+        if (name && date) {
+          return Drupal.t('By @name on @date', {
+            '@name': name,
+            '@date': date,
+          });
+        }
+        if (name) {
+          return Drupal.t('By @name', { '@name': name });
+        }
+        if (date) {
+          return Drupal.t('Authored on @date', { '@date': date });
+        }
+      });
+
+      $context.find('.node-form-options').drupalSetSummary((context) => {
+        const $optionsContext = $(context);
+        const values = [];
+
+        if ($optionsContext.find('input:checked').length) {
+          $optionsContext
+            .find('input:checked')
+            .next('label')
+            .each(function () {
+              values.push(Drupal.checkPlain(this.textContent.trim()));
+            });
+          return values.join(', ');
+        }
+
+        return Drupal.t('Not promoted');
+      });
+    },
+  };
+})(jQuery, Drupal, drupalSettings);

core/modules/node/node.libraries.yml

@@ -0,0 +1,45 @@
+drupal.node:
+  version: VERSION
+  css:
+    layout:
+      css/node.module.css: {}
+  js:
+    node.js: {}
+  dependencies:
+    - core/drupal.entity-form
+    - core/drupalSettings
+
+drupal.node.preview:
+  version: VERSION
+  css:
+    theme:
+      css/node.preview.css: {}
+  js:
+    node.preview.js: {}
+  dependencies:
+    - core/jquery
+    - core/once
+    - core/drupal
+    - core/drupal.dialog
+    - core/drupal.form
+
+drupal.content_types:
+  version: VERSION
+  js:
+    content_types.js: {}
+  dependencies:
+    - core/jquery
+    - core/drupal
+    - core/drupal.form
+
+form:
+  version: VERSION
+  css:
+    layout:
+      css/node.module.css: {}
+
+drupal.node.admin:
+  version: VERSION
+  css:
+    theme:
+      css/node.admin.css: {}

core/modules/node/node.links.action.yml

@@ -0,0 +1,10 @@
+node.type_add:
+  route_name: node.type_add
+  title: 'Add content type'
+  appears_on:
+    - entity.node_type.collection
+node.add_page:
+  route_name: node.add_page
+  title: 'Add content'
+  appears_on:
+    - system.admin_content

core/modules/node/node.links.contextual.yml

@@ -0,0 +1,10 @@
+entity.node.edit_form:
+  route_name: entity.node.edit_form
+  group: node
+  title: Edit
+
+entity.node.delete_form:
+  route_name: entity.node.delete_form
+  group: node
+  title: Delete
+  weight: 10

core/modules/node/node.links.menu.yml

@@ -0,0 +1,8 @@
+entity.node_type.collection:
+  title: 'Content types'
+  parent: system.admin_structure
+  description: 'Create and manage fields, forms, and display settings for your content.'
+  route_name: entity.node_type.collection
+node.add_page:
+  title: 'Add content'
+  route_name: node.add_page

core/modules/node/node.links.task.yml

@@ -0,0 +1,26 @@
+entity.node.canonical:
+  route_name: entity.node.canonical
+  base_route: entity.node.canonical
+  title: 'View'
+entity.node.edit_form:
+  route_name: entity.node.edit_form
+  base_route: entity.node.canonical
+  title: Edit
+entity.node.delete_form:
+  route_name: entity.node.delete_form
+  base_route: entity.node.canonical
+  title: Delete
+  weight: 10
+entity.node.version_history:
+  route_name: entity.node.version_history
+  base_route: entity.node.canonical
+  title: 'Revisions'
+  weight: 20
+entity.node_type.edit_form:
+  title: 'Edit'
+  route_name: entity.node_type.edit_form
+  base_route: entity.node_type.edit_form
+entity.node_type.collection:
+  title: List
+  route_name: entity.node_type.collection
+  base_route: entity.node_type.collection

core/modules/node/node.permissions.yml

@@ -0,0 +1,28 @@
+bypass node access:
+  title: 'Bypass content access control'
+  description: 'View, edit and delete all content regardless of permission restrictions.'
+  restrict access: true
+administer content types:
+  title: 'Administer content types'
+  description: 'Maintain the types of content available and the fields that are associated with those types.'
+  restrict access: true
+administer nodes:
+  title: 'Administer content'
+  description: 'Promote, change ownership, edit revisions, and perform other tasks across all content types.'
+  restrict access: true
+access content overview:
+  title: 'Access the Content overview page'
+view own unpublished content:
+  title: 'View own unpublished content'
+view all revisions:
+  title: 'View all revisions'
+  description: 'To view a revision, you also need permission to view the content item.'
+revert all revisions:
+  title: 'Revert all revisions'
+  description: 'To revert a revision, you also need permission to edit the content item.'
+delete all revisions:
+  title: 'Delete all revisions'
+  description: 'To delete a revision, you also need permission to delete the content item.'
+
+permission_callbacks:
+  - \Drupal\node\NodePermissions::nodeTypePermissions

core/modules/node/node.post_update.php

@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * @file
+ * Post update functions for Node.
+ */
+
+use Drupal\Core\Config\Entity\ConfigEntityUpdater;
+use Drupal\node\NodeTypeInterface;
+
+/**
+ * Converts empty `description` and `help` in content types to NULL.
+ */
+function node_post_update_set_node_type_description_and_help_to_null(array &$sandbox): void {
+  \Drupal::classResolver(ConfigEntityUpdater::class)
+    ->update($sandbox, 'node_type', function (NodeTypeInterface $node_type): bool {
+      // @see node_node_type_presave()
+      return trim($node_type->getDescription()) === '' || trim($node_type->getHelp()) === '';
+    });
+}
+
+/**
+ * Implements hook_removed_post_updates().
+ */
+function node_removed_post_updates() {
+  return [
+    'node_post_update_configure_status_field_widget' => '9.0.0',
+    'node_post_update_node_revision_views_data' => '9.0.0',
+    'node_post_update_glossary_view_published' => '10.0.0',
+    'node_post_update_rebuild_node_revision_routes' => '10.0.0',
+    'node_post_update_modify_base_field_author_override' => '10.0.0',
+  ];
+}

core/modules/node/node.preview.js

@@ -0,0 +1,116 @@
+/**
+ * @file
+ * Preview behaviors.
+ */
+
+(function ($, Drupal) {
+  /**
+   * Disables all non-relevant links in node previews.
+   *
+   * Destroys links (except local fragment identifiers such as href="#frag") in
+   * node previews to prevent users from leaving the page.
+   *
+   * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches confirmation prompt for clicking links in node preview mode.
+   * @prop {Drupal~behaviorDetach} detach
+   *   Detaches confirmation prompt for clicking links in node preview mode.
+   */
+  Drupal.behaviors.nodePreviewDestroyLinks = {
+    attach(context) {
+      function clickPreviewModal(event) {
+        // Only confirm leaving previews when left-clicking and user is not
+        // pressing the ALT, CTRL, META (Command key on the Macintosh keyboard)
+        // or SHIFT key.
+        if (
+          event.button === 0 &&
+          !event.altKey &&
+          !event.ctrlKey &&
+          !event.metaKey &&
+          !event.shiftKey
+        ) {
+          event.preventDefault();
+          const $previewDialog = $(
+            `<div>${Drupal.theme('nodePreviewModal')}</div>`,
+          ).appendTo('body');
+          Drupal.dialog($previewDialog, {
+            title: Drupal.t('Leave preview?'),
+            buttons: [
+              {
+                text: Drupal.t('Cancel'),
+                click() {
+                  $(this).dialog('close');
+                },
+              },
+              {
+                text: Drupal.t('Leave preview'),
+                click() {
+                  window.top.location.href = event.target.href;
+                },
+              },
+            ],
+          }).showModal();
+        }
+      }
+
+      if (!context.querySelector('.node-preview-container')) {
+        return;
+      }
+      if (once('node-preview', 'html').length) {
+        $(document).on(
+          'click.preview',
+          'a:not([href^="#"], .node-preview-container a)',
+          clickPreviewModal,
+        );
+      }
+    },
+    detach(context, settings, trigger) {
+      if (trigger === 'unload') {
+        if (
+          context.querySelector('.node-preview-container') &&
+          once.remove('node-preview', 'html').length
+        ) {
+          $(document).off('click.preview');
+        }
+      }
+    },
+  };
+
+  /**
+   * Switch view mode.
+   *
+   * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches automatic submit on `formUpdated.preview` events.
+   */
+  Drupal.behaviors.nodePreviewSwitchViewMode = {
+    attach(context) {
+      const autosubmit = once(
+        'autosubmit',
+        '[data-drupal-autosubmit]',
+        context,
+      );
+      if (autosubmit.length) {
+        $(autosubmit).on('formUpdated.preview', function () {
+          $(this.form).trigger('submit');
+        });
+      }
+    },
+  };
+
+  /**
+   * Theme function for node preview modal.
+   *
+   * @return {string}
+   *   Markup for the node preview modal.
+   */
+  Drupal.theme.nodePreviewModal = function () {
+    return `<p>${Drupal.t(
+      'Leaving the preview will cause unsaved changes to be lost. Are you sure you want to leave the preview?',
+    )}</p><small class="description">${Drupal.t(
+      'CTRL+Left click will prevent this dialog from showing and proceed to the clicked link.',
+    )}</small>`;
+  };
+})(jQuery, Drupal);

core/modules/node/node.routing.yml

@@ -0,0 +1,167 @@
+node.multiple_delete_confirm:
+  path: '/admin/content/node/delete'
+  defaults:
+    _form: '\Drupal\node\Form\DeleteMultiple'
+    entity_type_id: 'node'
+  requirements:
+    _entity_delete_multiple_access: 'node'
+
+entity.node.delete_multiple_form:
+  path: '/admin/content/node/delete'
+  defaults:
+    _form: '\Drupal\node\Form\DeleteMultiple'
+    entity_type_id: 'node'
+  requirements:
+    _entity_delete_multiple_access: 'node'
+
+node.add_page:
+  path: '/node/add'
+  defaults:
+    _title: 'Add content'
+    _controller: '\Drupal\node\Controller\NodeController::addPage'
+  options:
+    _node_operation_route: TRUE
+  requirements:
+    _entity_create_any_access: 'node'
+
+node.add:
+  path: '/node/add/{node_type}'
+  defaults:
+    _entity_form: 'node.default'
+    _title_callback: '\Drupal\node\Controller\NodeController::addPageTitle'
+  requirements:
+    _entity_create_access: 'node:{node_type}'
+  options:
+    _node_operation_route: TRUE
+    parameters:
+      node_type:
+        type: entity:node_type
+        with_config_overrides: TRUE
+
+entity.node.preview:
+  path: '/node/preview/{node_preview}/{view_mode_id}'
+  defaults:
+    _controller: '\Drupal\node\Controller\NodePreviewController::view'
+    _title_callback: '\Drupal\node\Controller\NodePreviewController::title'
+  requirements:
+    _node_preview_access: '{node_preview}'
+  options:
+    parameters:
+      node_preview:
+        type: 'node_preview'
+
+entity.node.version_history:
+  path: '/node/{node}/revisions'
+  defaults:
+    _title: 'Revisions'
+    _controller: '\Drupal\node\Controller\NodeController::revisionOverview'
+  requirements:
+    _entity_access: 'node.view all revisions'
+    node: \d+
+  options:
+    _node_operation_route: TRUE
+    parameters:
+      node:
+        type: entity:node
+
+entity.node.revision:
+  path: '/node/{node}/revisions/{node_revision}/view'
+  defaults:
+    _controller: '\Drupal\node\Controller\NodeController::revisionShow'
+    _title_callback: '\Drupal\node\Controller\NodeController::revisionPageTitle'
+  requirements:
+    _entity_access: 'node_revision.view revision'
+    node: \d+
+  options:
+    parameters:
+      node:
+        type: entity:node
+      node_revision:
+        type: entity_revision:node
+
+node.revision_revert_confirm:
+  path: '/node/{node}/revisions/{node_revision}/revert'
+  defaults:
+    _form: '\Drupal\node\Form\NodeRevisionRevertForm'
+    _title: 'Revert to earlier revision'
+  requirements:
+    _entity_access: 'node_revision.revert revision'
+    node: \d+
+  options:
+    _node_operation_route: TRUE
+    parameters:
+      node:
+        type: entity:node
+      node_revision:
+        type: entity_revision:node
+
+node.revision_revert_translation_confirm:
+  path: '/node/{node}/revisions/{node_revision}/revert/{langcode}'
+  defaults:
+    _form: '\Drupal\node\Form\NodeRevisionRevertTranslationForm'
+    _title: 'Revert to earlier revision of a translation'
+  requirements:
+    _entity_access: 'node_revision.revert revision'
+    node: \d+
+  options:
+    _node_operation_route: TRUE
+    parameters:
+      node:
+        type: entity:node
+      node_revision:
+        type: entity_revision:node
+
+node.revision_delete_confirm:
+  path: '/node/{node}/revisions/{node_revision}/delete'
+  defaults:
+    _form: '\Drupal\node\Form\NodeRevisionDeleteForm'
+    _title: 'Delete earlier revision'
+  requirements:
+    _entity_access: 'node_revision.delete revision'
+    node: \d+
+  options:
+    _node_operation_route: TRUE
+    parameters:
+      node:
+        type: entity:node
+      node_revision:
+        type: entity_revision:node
+
+entity.node_type.collection:
+  path: '/admin/structure/types'
+  defaults:
+    _entity_list: 'node_type'
+    _title: 'Content types'
+  requirements:
+    _permission: 'administer content types'
+
+node.type_add:
+  path: '/admin/structure/types/add'
+  defaults:
+    _entity_form: 'node_type.add'
+    _title: 'Add content type'
+  requirements:
+    _permission: 'administer content types'
+
+entity.node_type.edit_form:
+  path: '/admin/structure/types/manage/{node_type}'
+  defaults:
+    _entity_form: 'node_type.edit'
+    _title_callback: '\Drupal\Core\Entity\Controller\EntityController::title'
+  requirements:
+    _permission: 'administer content types'
+
+entity.node_type.delete_form:
+  path: '/admin/structure/types/manage/{node_type}/delete'
+  defaults:
+    _entity_form: 'node_type.delete'
+    _title: 'Delete'
+  requirements:
+    _entity_access: 'node_type.delete'
+
+node.configure_rebuild_confirm:
+  path: '/admin/reports/status/rebuild'
+  defaults:
+    _form: '\Drupal\node\Form\RebuildPermissionsForm'
+  requirements:
+    _permission: 'administer nodes'

core/modules/node/node.services.yml

@@ -0,0 +1,42 @@
+services:
+  _defaults:
+    autoconfigure: true
+  node.route_subscriber:
+    class: Drupal\node\Routing\RouteSubscriber
+  node.grant_storage:
+    class: Drupal\node\NodeGrantDatabaseStorage
+    arguments: ['@database', '@module_handler', '@language_manager']
+    tags:
+      - { name: backend_overridable }
+  Drupal\node\NodeGrantDatabaseStorageInterface: '@node.grant_storage'
+  access_check.node.preview:
+    class: Drupal\node\Access\NodePreviewAccessCheck
+    arguments: ['@entity_type.manager']
+    tags:
+      - { name: access_check, applies_to: _node_preview_access }
+  node.admin_path.route_subscriber:
+    class: Drupal\node\EventSubscriber\NodeAdminRouteSubscriber
+    arguments: ['@config.factory', '@router.builder']
+  node_preview:
+    class: Drupal\node\ParamConverter\NodePreviewConverter
+    arguments: ['@tempstore.private']
+    tags:
+      - { name: paramconverter }
+    lazy: true
+  node.page_cache_response_policy.deny_node_preview:
+    class: Drupal\node\PageCache\DenyNodePreview
+    arguments: ['@current_route_match']
+    public: false
+    tags:
+      - { name: page_cache_response_policy }
+      - { name: dynamic_page_cache_response_policy }
+  cache_context.user.node_grants:
+    class: Drupal\node\Cache\NodeAccessGrantsCacheContext
+    arguments: ['@current_user']
+    tags:
+      - { name: cache.context }
+  node.node_route_context:
+    class: Drupal\node\ContextProvider\NodeRouteContext
+    arguments: ['@current_route_match']
+    tags:
+      - { name: 'context_provider' }

core/modules/node/node.tokens.inc

@@ -0,0 +1,221 @@
+<?php
+
+/**
+ * @file
+ * Builds placeholder replacement tokens for node-related data.
+ */
+
+use Drupal\Core\Datetime\Entity\DateFormat;
+use Drupal\Core\Language\LanguageInterface;
+use Drupal\Core\Render\BubbleableMetadata;
+use Drupal\user\Entity\User;
+
+/**
+ * Implements hook_token_info().
+ */
+function node_token_info() {
+  $type = [
+    'name' => t('Nodes'),
+    'description' => t('Tokens related to individual content items, or "nodes".'),
+    'needs-data' => 'node',
+  ];
+
+  // Core tokens for nodes.
+  $node['nid'] = [
+    'name' => t("Content ID"),
+    'description' => t('The unique ID of the content item, or "node".'),
+  ];
+  $node['vid'] = [
+    'name' => t("Revision ID"),
+    'description' => t("The unique ID of the node's latest revision."),
+  ];
+  $node['type'] = [
+    'name' => t("Content type"),
+  ];
+  $node['type-name'] = [
+    'name' => t("Content type name"),
+    'description' => t("The human-readable name of the node type."),
+  ];
+  $node['title'] = [
+    'name' => t("Title"),
+  ];
+  $node['body'] = [
+    'name' => t("Body"),
+    'description' => t("The main body text of the node."),
+  ];
+  $node['summary'] = [
+    'name' => t("Summary"),
+    'description' => t("The summary of the node's main body text."),
+  ];
+  $node['langcode'] = [
+    'name' => t('Language code'),
+    'description' => t('The language code of the language the node is written in.'),
+  ];
+  $node['published_status'] = [
+    'name' => t('Published'),
+    'description' => t('The publication status of the node ("Published" or "Unpublished").'),
+  ];
+  $node['url'] = [
+    'name' => t("URL"),
+    'description' => t("The URL of the node."),
+  ];
+  $node['edit-url'] = [
+    'name' => t("Edit URL"),
+    'description' => t("The URL of the node's edit page."),
+  ];
+
+  // Chained tokens for nodes.
+  $node['created'] = [
+    'name' => t("Date created"),
+    'type' => 'date',
+  ];
+  $node['changed'] = [
+    'name' => t("Date changed"),
+    'description' => t("The date the node was most recently updated."),
+    'type' => 'date',
+  ];
+  $node['author'] = [
+    'name' => t("Author"),
+    'type' => 'user',
+  ];
+
+  return [
+    'types' => ['node' => $type],
+    'tokens' => ['node' => $node],
+  ];
+}
+
+/**
+ * Implements hook_tokens().
+ */
+function node_tokens($type, $tokens, array $data, array $options, BubbleableMetadata $bubbleable_metadata) {
+  $token_service = \Drupal::token();
+
+  $url_options = ['absolute' => TRUE];
+  if (isset($options['langcode'])) {
+    $url_options['language'] = \Drupal::languageManager()->getLanguage($options['langcode']);
+    $langcode = $options['langcode'];
+  }
+  else {
+    $langcode = LanguageInterface::LANGCODE_DEFAULT;
+  }
+  $replacements = [];
+
+  if ($type == 'node' && !empty($data['node'])) {
+    /** @var \Drupal\node\NodeInterface $node */
+    $node = $data['node'];
+
+    foreach ($tokens as $name => $original) {
+      switch ($name) {
+        // Simple key values on the node.
+        case 'nid':
+          $replacements[$original] = $node->id();
+          break;
+
+        case 'vid':
+          $replacements[$original] = $node->getRevisionId();
+          break;
+
+        case 'type':
+          $replacements[$original] = $node->getType();
+          break;
+
+        case 'type-name':
+          $type_name = node_get_type_label($node);
+          $replacements[$original] = $type_name;
+          break;
+
+        case 'title':
+          $replacements[$original] = $node->getTitle();
+          break;
+
+        case 'body':
+        case 'summary':
+          $translation = \Drupal::service('entity.repository')->getTranslationFromContext($node, $langcode, ['operation' => 'node_tokens']);
+          if ($translation->hasField('body') && ($items = $translation->get('body')) && !$items->isEmpty()) {
+            $item = $items[0];
+            // If the summary was requested and is not empty, use it.
+            if ($name == 'summary' && !empty($item->summary)) {
+              $output = $item->summary_processed;
+            }
+            // Attempt to provide a suitable version of the 'body' field.
+            else {
+              $output = $item->processed;
+              // A summary was requested.
+              if ($name == 'summary') {
+                // Generate an optionally trimmed summary of the body field.
+
+                // Get the 'trim_length' size used for the 'teaser' mode, if
+                // present, or use the default trim_length size.
+                $display_options = \Drupal::service('entity_display.repository')
+                  ->getViewDisplay('node', $node->getType(), 'teaser')
+                  ->getComponent('body');
+                if (isset($display_options['settings']['trim_length'])) {
+                  $length = $display_options['settings']['trim_length'];
+                }
+                else {
+                  $settings = \Drupal::service('plugin.manager.field.formatter')->getDefaultSettings('text_summary_or_trimmed');
+                  $length = $settings['trim_length'];
+                }
+
+                $output = text_summary($output, $item->format, $length);
+              }
+            }
+            // "processed" returns a \Drupal\Component\Render\MarkupInterface
+            // via check_markup().
+            $replacements[$original] = $output;
+          }
+          break;
+
+        case 'langcode':
+          $replacements[$original] = $node->language()->getId();
+          break;
+
+        case 'published_status':
+          $replacements[$original] = $node->isPublished() ? t('Published') : t('Unpublished');
+          break;
+
+        case 'url':
+          $replacements[$original] = $node->toUrl('canonical', $url_options)->toString();
+          break;
+
+        case 'edit-url':
+          $replacements[$original] = $node->toUrl('edit-form', $url_options)->toString();
+          break;
+
+        // Default values for the chained tokens handled below.
+        case 'author':
+          $account = $node->getOwner() ? $node->getOwner() : User::load(0);
+          $bubbleable_metadata->addCacheableDependency($account);
+          $replacements[$original] = $account->label();
+          break;
+
+        case 'created':
+          $date_format = DateFormat::load('medium');
+          $bubbleable_metadata->addCacheableDependency($date_format);
+          $replacements[$original] = \Drupal::service('date.formatter')->format($node->getCreatedTime(), 'medium', '', NULL, $langcode);
+          break;
+
+        case 'changed':
+          $date_format = DateFormat::load('medium');
+          $bubbleable_metadata->addCacheableDependency($date_format);
+          $replacements[$original] = \Drupal::service('date.formatter')->format($node->getChangedTime(), 'medium', '', NULL, $langcode);
+          break;
+      }
+    }
+
+    if ($author_tokens = $token_service->findWithPrefix($tokens, 'author')) {
+      $replacements += $token_service->generate('user', $author_tokens, ['user' => $node->getOwner()], $options, $bubbleable_metadata);
+    }
+
+    if ($created_tokens = $token_service->findWithPrefix($tokens, 'created')) {
+      $replacements += $token_service->generate('date', $created_tokens, ['date' => $node->getCreatedTime()], $options, $bubbleable_metadata);
+    }
+
+    if ($changed_tokens = $token_service->findWithPrefix($tokens, 'changed')) {
+      $replacements += $token_service->generate('date', $changed_tokens, ['date' => $node->getChangedTime()], $options, $bubbleable_metadata);
+    }
+  }
+
+  return $replacements;
+}

core/modules/node/node.views.inc

@@ -0,0 +1,52 @@
+<?php
+
+/**
+ * @file
+ * Provide views data for node.module.
+ */
+
+use Drupal\user\RoleInterface;
+use Drupal\views\ViewExecutable;
+use Drupal\user\Entity\Role;
+use Drupal\views\Analyzer;
+
+/**
+ * Implements hook_views_analyze().
+ */
+function node_views_analyze(ViewExecutable $view) {
+  $ret = [];
+  // Check for something other than the default display:
+  if ($view->storage->get('base_table') == 'node') {
+    foreach ($view->displayHandlers as $display) {
+      if (!$display->isDefaulted('access') || !$display->isDefaulted('filters')) {
+        // check for no access control
+        $access = $display->getOption('access');
+        if (empty($access['type']) || $access['type'] == 'none') {
+          $anonymous_role = Role::load(RoleInterface::ANONYMOUS_ID);
+          $anonymous_has_access = $anonymous_role && $anonymous_role->hasPermission('access content');
+          $authenticated_role = Role::load(RoleInterface::AUTHENTICATED_ID);
+          $authenticated_has_access = $authenticated_role && $authenticated_role->hasPermission('access content');
+          if (!$anonymous_has_access || !$authenticated_has_access) {
+            $ret[] = Analyzer::formatMessage(t('Some roles lack permission to access content, but display %display has no access control.', ['%display' => $display->display['display_title']]), 'warning');
+          }
+          $filters = $display->getOption('filters');
+          foreach ($filters as $filter) {
+            if ($filter['table'] == 'node' && ($filter['field'] == 'status' || $filter['field'] == 'status_extra')) {
+              continue 2;
+            }
+          }
+          $ret[] = Analyzer::formatMessage(t('Display %display has no access control but does not contain a filter for published nodes.', ['%display' => $display->display['display_title']]), 'warning');
+        }
+      }
+    }
+  }
+  foreach ($view->displayHandlers as $display) {
+    if ($display->getPluginId() == 'page') {
+      if ($display->getOption('path') == 'node/%') {
+        $ret[] = Analyzer::formatMessage(t('Display %display has set node/% as path. This will not produce what you want. If you want to have multiple versions of the node view, use Layout Builder.', ['%display' => $display->display['display_title']]), 'warning');
+      }
+    }
+  }
+
+  return $ret;
+}

core/modules/node/node.views_execution.inc

@@ -0,0 +1,20 @@
+<?php
+
+/**
+ * @file
+ * Provide views runtime hooks for node.module.
+ */
+
+use Drupal\views\ViewExecutable;
+
+/**
+ * Implements hook_views_query_substitutions().
+ */
+function node_views_query_substitutions(ViewExecutable $view) {
+  $account = \Drupal::currentUser();
+  return [
+    '***ADMINISTER_NODES***' => intval($account->hasPermission('administer nodes')),
+    '***VIEW_OWN_UNPUBLISHED_NODES***' => intval($account->hasPermission('view own unpublished content')),
+    '***BYPASS_NODE_ACCESS***' => intval($account->hasPermission('bypass node access')),
+  ];
+}

core/modules/node/src/Access/NodePreviewAccessCheck.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace Drupal\node\Access;
+
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Routing\Access\AccessInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\node\NodeInterface;
+
+/**
+ * Determines access to node previews.
+ *
+ * @ingroup node_access
+ */
+class NodePreviewAccessCheck implements AccessInterface {
+
+  /**
+   * The entity type manager service.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+   */
+  protected $entityTypeManager;
+
+  /**
+   * Constructs an EntityCreateAccessCheck object.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   *   The entity type manager service.
+   */
+  public function __construct(EntityTypeManagerInterface $entity_type_manager) {
+    $this->entityTypeManager = $entity_type_manager;
+  }
+
+  /**
+   * Checks access to the node preview page.
+   *
+   * @param \Drupal\Core\Session\AccountInterface $account
+   *   The currently logged in account.
+   * @param \Drupal\node\NodeInterface $node_preview
+   *   The node that is being previewed.
+   *
+   * @return \Drupal\Core\Access\AccessResultInterface
+   *   The access result.
+   */
+  public function access(AccountInterface $account, NodeInterface $node_preview) {
+    if ($node_preview->isNew()) {
+      $access_controller = $this->entityTypeManager->getAccessControlHandler('node');
+      return $access_controller->createAccess($node_preview->bundle(), $account, [], TRUE);
+    }
+    else {
+      return $node_preview->access('update', $account, TRUE);
+    }
+  }
+
+}

core/modules/node/src/Cache/NodeAccessGrantsCacheContext.php

@@ -0,0 +1,101 @@
+<?php
+
+namespace Drupal\node\Cache;
+
+use Drupal\Core\Cache\CacheableMetadata;
+use Drupal\Core\Cache\Context\CalculatedCacheContextInterface;
+use Drupal\Core\Cache\Context\UserCacheContextBase;
+
+/**
+ * Defines the node access view cache context service.
+ *
+ * Cache context ID: 'user.node_grants' (to vary by all operations' grants).
+ * Calculated cache context ID: 'user.node_grants:%operation', e.g.
+ * 'user.node_grants:view' (to vary by the view operation's grants).
+ *
+ * This allows for node access grants-sensitive caching when listing nodes.
+ *
+ * @see node_query_node_access_alter()
+ * @ingroup node_access
+ */
+class NodeAccessGrantsCacheContext extends UserCacheContextBase implements CalculatedCacheContextInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getLabel() {
+    return t("Content access view grants");
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getContext($operation = NULL) {
+    // If the current user either can bypass node access then we don't need to
+    // determine the exact node grants for the current user.
+    if ($this->user->hasPermission('bypass node access')) {
+      return 'all';
+    }
+
+    // When no specific operation is specified, check the grants for all three
+    // possible operations.
+    if ($operation === NULL) {
+      $result = [];
+      foreach (['view', 'update', 'delete'] as $op) {
+        $result[] = $this->checkNodeGrants($op);
+      }
+      return implode('-', $result);
+    }
+    else {
+      return $this->checkNodeGrants($operation);
+    }
+  }
+
+  /**
+   * Checks the node grants for the given operation.
+   *
+   * @param string $operation
+   *   The operation to check the node grants for.
+   *
+   * @return string
+   *   The string representation of the cache context.
+   */
+  protected function checkNodeGrants($operation) {
+    // When checking the grants for the 'view' operation and the current user
+    // has a global view grant (i.e. a view grant for node ID 0) — note that
+    // this is automatically the case if no node access modules exist (no
+    // hook_node_grants() implementations) then we don't need to determine the
+    // exact node view grants for the current user.
+    if ($operation === 'view' && node_access_view_all_nodes($this->user)) {
+      return 'view.all';
+    }
+
+    $grants = node_access_grants($operation, $this->user);
+    $grants_context_parts = [];
+    foreach ($grants as $realm => $gids) {
+      $grants_context_parts[] = $realm . ':' . implode(',', $gids);
+    }
+    return $operation . '.' . implode(';', $grants_context_parts);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCacheableMetadata($operation = NULL) {
+    $cacheable_metadata = new CacheableMetadata();
+
+    if (!\Drupal::moduleHandler()->hasImplementations('node_grants')) {
+      return $cacheable_metadata;
+    }
+
+    // The node grants may change if the user is updated. (The max-age is set to
+    // zero below, but sites may override this cache context, and change it to a
+    // non-zero value. In such cases, this cache tag is needed for correctness.)
+    $cacheable_metadata->setCacheTags(['user:' . $this->user->id()]);
+
+    // If the site is using node grants, this cache context can not be
+    // optimized.
+    return $cacheable_metadata->setCacheMaxAge(0);
+  }
+
+}

core/modules/node/src/ConfigTranslation/NodeTypeMapper.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Drupal\node\ConfigTranslation;
+
+use Drupal\config_translation\ConfigEntityMapper;
+use Drupal\Core\Config\Entity\ConfigEntityInterface;
+
+/**
+ * Provides a configuration mapper for node types.
+ */
+class NodeTypeMapper extends ConfigEntityMapper {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setEntity(ConfigEntityInterface $entity) {
+    parent::setEntity($entity);
+
+    // Adds the title label to the translation form.
+    $node_type = $entity->id();
+    $config = $this->configFactory->get("core.base_field_override.node.$node_type.title");
+    if (!$config->isNew()) {
+      $this->addConfigName($config->getName());
+    }
+  }
+
+}

core/modules/node/src/ContextProvider/NodeRouteContext.php

@@ -0,0 +1,81 @@
+<?php
+
+namespace Drupal\node\ContextProvider;
+
+use Drupal\Core\Cache\CacheableMetadata;
+use Drupal\Core\Plugin\Context\Context;
+use Drupal\Core\Plugin\Context\ContextProviderInterface;
+use Drupal\Core\Plugin\Context\EntityContext;
+use Drupal\Core\Plugin\Context\EntityContextDefinition;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\node\Entity\Node;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+
+/**
+ * Sets the current node as a context on node routes.
+ */
+class NodeRouteContext implements ContextProviderInterface {
+
+  use StringTranslationTrait;
+
+  /**
+   * The route match object.
+   *
+   * @var \Drupal\Core\Routing\RouteMatchInterface
+   */
+  protected $routeMatch;
+
+  /**
+   * Constructs a new NodeRouteContext.
+   *
+   * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
+   *   The route match object.
+   */
+  public function __construct(RouteMatchInterface $route_match) {
+    $this->routeMatch = $route_match;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRuntimeContexts(array $unqualified_context_ids) {
+    $result = [];
+    $context_definition = EntityContextDefinition::create('node')->setRequired(FALSE);
+    $value = NULL;
+    if (($route_object = $this->routeMatch->getRouteObject())) {
+      $route_contexts = $route_object->getOption('parameters');
+      // Check for a node revision parameter first.
+      if (isset($route_contexts['node_revision']) && $revision = $this->routeMatch->getParameter('node_revision')) {
+        $value = $revision;
+      }
+      elseif (isset($route_contexts['node']) && $node = $this->routeMatch->getParameter('node')) {
+        $value = $node;
+      }
+      elseif (isset($route_contexts['node_preview']) && $node = $this->routeMatch->getParameter('node_preview')) {
+        $value = $node;
+      }
+      elseif ($this->routeMatch->getRouteName() == 'node.add') {
+        $node_type = $this->routeMatch->getParameter('node_type');
+        $value = Node::create(['type' => $node_type->id()]);
+      }
+    }
+
+    $cacheability = new CacheableMetadata();
+    $cacheability->setCacheContexts(['route']);
+
+    $context = new Context($context_definition, $value);
+    $context->addCacheableDependency($cacheability);
+    $result['node'] = $context;
+
+    return $result;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getAvailableContexts() {
+    $context = EntityContext::fromEntityTypeId('node', $this->t('Node from URL'));
+    return ['node' => $context];
+  }
+
+}

core/modules/node/src/Controller/NodeController.php

@@ -0,0 +1,299 @@
+<?php
+
+namespace Drupal\node\Controller;
+
+use Drupal\Component\Utility\Xss;
+use Drupal\Core\Controller\ControllerBase;
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
+use Drupal\Core\Entity\EntityRepositoryInterface;
+use Drupal\Core\Link;
+use Drupal\Core\Render\RendererInterface;
+use Drupal\Core\Url;
+use Drupal\node\NodeStorageInterface;
+use Drupal\node\NodeTypeInterface;
+use Drupal\node\NodeInterface;
+
+/**
+ * Returns responses for Node routes.
+ */
+class NodeController extends ControllerBase implements ContainerInjectionInterface {
+
+  /**
+   * The date formatter service.
+   *
+   * @var \Drupal\Core\Datetime\DateFormatterInterface
+   */
+  protected $dateFormatter;
+
+  /**
+   * The renderer service.
+   *
+   * @var \Drupal\Core\Render\RendererInterface
+   */
+  protected $renderer;
+
+  /**
+   * The entity repository service.
+   *
+   * @var \Drupal\Core\Entity\EntityRepositoryInterface
+   */
+  protected $entityRepository;
+
+  /**
+   * Constructs a NodeController object.
+   *
+   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+   *   The date formatter service.
+   * @param \Drupal\Core\Render\RendererInterface $renderer
+   *   The renderer service.
+   * @param \Drupal\Core\Entity\EntityRepositoryInterface $entity_repository
+   *   The entity repository.
+   */
+  public function __construct(DateFormatterInterface $date_formatter, RendererInterface $renderer, EntityRepositoryInterface $entity_repository) {
+    $this->dateFormatter = $date_formatter;
+    $this->renderer = $renderer;
+    $this->entityRepository = $entity_repository;
+  }
+
+  /**
+   * Displays add content links for available content types.
+   *
+   * Redirects to node/add/[type] if only one content type is available.
+   *
+   * @return array|\Symfony\Component\HttpFoundation\RedirectResponse
+   *   A render array for a list of the node types that can be added; however,
+   *   if there is only one node type defined for the site, the function
+   *   will return a RedirectResponse to the node add page for that one node
+   *   type.
+   */
+  public function addPage() {
+    $definition = $this->entityTypeManager()->getDefinition('node_type');
+    $build = [
+      '#theme' => 'node_add_list',
+      '#cache' => [
+        'tags' => $this->entityTypeManager()->getDefinition('node_type')->getListCacheTags(),
+      ],
+    ];
+
+    $content = [];
+
+    $types = $this->entityTypeManager()->getStorage('node_type')->loadMultiple();
+    uasort($types, [$definition->getClass(), 'sort']);
+    // Only use node types the user has access to.
+    foreach ($types as $type) {
+      $access = $this->entityTypeManager()->getAccessControlHandler('node')->createAccess($type->id(), NULL, [], TRUE);
+      if ($access->isAllowed()) {
+        $content[$type->id()] = $type;
+      }
+      $this->renderer->addCacheableDependency($build, $access);
+    }
+
+    // Bypass the node/add listing if only one content type is available.
+    if (count($content) == 1) {
+      $type = array_shift($content);
+      return $this->redirect('node.add', ['node_type' => $type->id()]);
+    }
+
+    $build['#content'] = $content;
+
+    return $build;
+  }
+
+  /**
+   * Displays a node revision.
+   *
+   * @param \Drupal\node\NodeInterface $node_revision
+   *   The node revision.
+   *
+   * @return array
+   *   An array suitable for \Drupal\Core\Render\RendererInterface::render().
+   */
+  public function revisionShow(NodeInterface $node_revision) {
+    $node_view_controller = new NodeViewController($this->entityTypeManager(), $this->renderer, $this->currentUser(), $this->entityRepository);
+    $page = $node_view_controller->view($node_revision);
+    unset($page['nodes'][$node_revision->id()]['#cache']);
+    return $page;
+  }
+
+  /**
+   * Page title callback for a node revision.
+   *
+   * @param \Drupal\node\NodeInterface $node_revision
+   *   The node revision.
+   *
+   * @return string
+   *   The page title.
+   */
+  public function revisionPageTitle(NodeInterface $node_revision) {
+    return $this->t('Revision of %title from %date', [
+      '%title' => $node_revision->label(),
+      '%date' => $this->dateFormatter->format($node_revision->getRevisionCreationTime()),
+    ]);
+  }
+
+  /**
+   * Generates an overview table of older revisions of a node.
+   *
+   * @param \Drupal\node\NodeInterface $node
+   *   A node object.
+   *
+   * @return array
+   *   An array as expected by \Drupal\Core\Render\RendererInterface::render().
+   */
+  public function revisionOverview(NodeInterface $node) {
+    // Always use the latest revision in the current content language to
+    // determine if this node has translations. This supports showing the
+    // correct translation revisions for translations that only have.
+    // non-default revisions.
+    $node = $this->entityRepository->getActive($node->getEntityTypeId(), $node->id());
+    $langcode = $node->language()->getId();
+    $language_name = $node->language()->getName();
+    $languages = $node->getTranslationLanguages();
+    $has_translations = (count($languages) > 1);
+    $node_storage = $this->entityTypeManager()->getStorage('node');
+
+    $build['#title'] = $has_translations ? $this->t('@language_name revisions for %title', ['@language_name' => $language_name, '%title' => $node->label()]) : $this->t('Revisions for %title', ['%title' => $node->label()]);
+    $header = [$this->t('Revision'), $this->t('Operations')];
+
+    $rows = [];
+    $current_revision_displayed = FALSE;
+
+    foreach ($this->getRevisionIds($node, $node_storage) as $vid) {
+      /** @var \Drupal\node\NodeInterface $revision */
+      $revision = $node_storage->loadRevision($vid);
+      // Only show revisions that are affected by the language that is being
+      // displayed.
+      if ($revision->hasTranslation($langcode) && $revision->getTranslation($langcode)->isRevisionTranslationAffected()) {
+        $username = [
+          '#theme' => 'username',
+          '#account' => $revision->getRevisionUser(),
+        ];
+
+        // Use revision link to link to revisions that are not active.
+        $date = $this->dateFormatter->format($revision->revision_timestamp->value, 'short');
+
+        // We treat also the latest translation-affecting revision as current
+        // revision, if it was the default revision, as its values for the
+        // current language will be the same of the current default revision in
+        // this case.
+        $is_current_revision = $revision->isDefaultRevision() || (!$current_revision_displayed && $revision->wasDefaultRevision());
+        if (!$is_current_revision) {
+          $link = Link::fromTextAndUrl($date, new Url('entity.node.revision', ['node' => $node->id(), 'node_revision' => $vid]))->toString();
+        }
+        else {
+          $link = $node->toLink($date)->toString();
+          $current_revision_displayed = TRUE;
+        }
+
+        $row = [];
+        $column = [
+          'data' => [
+            '#type' => 'inline_template',
+            '#template' => '{% trans %}{{ date }} by {{ username }}{% endtrans %}{% if message %}<p class="revision-log">{{ message }}</p>{% endif %}',
+            '#context' => [
+              'date' => $link,
+              'username' => $this->renderer->renderInIsolation($username),
+              'message' => ['#markup' => $revision->revision_log->value, '#allowed_tags' => Xss::getHtmlTagList()],
+            ],
+          ],
+        ];
+        // @todo Simplify once https://www.drupal.org/node/2334319 lands.
+        $this->renderer->addCacheableDependency($column['data'], $username);
+        $row[] = $column;
+
+        if ($is_current_revision) {
+          $row[] = [
+            'data' => [
+              '#prefix' => '<em>',
+              '#markup' => $this->t('Current revision'),
+              '#suffix' => '</em>',
+            ],
+          ];
+
+          $rows[] = [
+            'data' => $row,
+            'class' => ['revision-current'],
+          ];
+        }
+        else {
+          $links = [];
+          if ($revision->access('revert revision')) {
+            $links['revert'] = [
+              'title' => $vid < $node->getRevisionId() ? $this->t('Revert') : $this->t('Set as current revision'),
+              'url' => $has_translations ?
+              Url::fromRoute('node.revision_revert_translation_confirm', ['node' => $node->id(), 'node_revision' => $vid, 'langcode' => $langcode]) :
+              Url::fromRoute('node.revision_revert_confirm', ['node' => $node->id(), 'node_revision' => $vid]),
+            ];
+          }
+
+          if ($revision->access('delete revision')) {
+            $links['delete'] = [
+              'title' => $this->t('Delete'),
+              'url' => Url::fromRoute('node.revision_delete_confirm', ['node' => $node->id(), 'node_revision' => $vid]),
+            ];
+          }
+
+          $row[] = [
+            'data' => [
+              '#type' => 'operations',
+              '#links' => $links,
+            ],
+          ];
+
+          $rows[] = $row;
+        }
+      }
+    }
+
+    $build['node_revisions_table'] = [
+      '#theme' => 'table',
+      '#rows' => $rows,
+      '#header' => $header,
+      '#attached' => [
+        'library' => ['node/drupal.node.admin'],
+      ],
+      '#attributes' => ['class' => ['node-revision-table']],
+    ];
+
+    $build['pager'] = ['#type' => 'pager'];
+
+    return $build;
+  }
+
+  /**
+   * The _title_callback for the node.add route.
+   *
+   * @param \Drupal\node\NodeTypeInterface $node_type
+   *   The current node.
+   *
+   * @return string
+   *   The page title.
+   */
+  public function addPageTitle(NodeTypeInterface $node_type) {
+    return $this->t('Create @name', ['@name' => $node_type->label()]);
+  }
+
+  /**
+   * Gets a list of node revision IDs for a specific node.
+   *
+   * @param \Drupal\node\NodeInterface $node
+   *   The node entity.
+   * @param \Drupal\node\NodeStorageInterface $node_storage
+   *   The node storage handler.
+   *
+   * @return int[]
+   *   Node revision IDs (in descending order).
+   */
+  protected function getRevisionIds(NodeInterface $node, NodeStorageInterface $node_storage) {
+    $result = $node_storage->getQuery()
+      ->accessCheck(TRUE)
+      ->allRevisions()
+      ->condition($node->getEntityType()->getKey('id'), $node->id())
+      ->sort($node->getEntityType()->getKey('revision'), 'DESC')
+      ->pager(50)
+      ->execute();
+    return array_keys($result);
+  }
+
+}

core/modules/node/src/Controller/NodePreviewController.php

@@ -0,0 +1,78 @@
+<?php
+
+namespace Drupal\node\Controller;
+
+use Drupal\Core\Entity\Controller\EntityViewController;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityRepositoryInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Render\RendererInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Defines a controller to render a single node in preview.
+ */
+class NodePreviewController extends EntityViewController {
+
+  /**
+   * The entity repository service.
+   *
+   * @var \Drupal\Core\Entity\EntityRepositoryInterface
+   */
+  protected $entityRepository;
+
+  /**
+   * Creates a NodeViewController object.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   *   The entity type manager.
+   * @param \Drupal\Core\Render\RendererInterface $renderer
+   *   The renderer service.
+   * @param \Drupal\Core\Entity\EntityRepositoryInterface $entity_repository
+   *   The entity repository.
+   */
+  public function __construct(EntityTypeManagerInterface $entity_type_manager, RendererInterface $renderer, EntityRepositoryInterface $entity_repository) {
+    parent::__construct($entity_type_manager, $renderer);
+    $this->entityRepository = $entity_repository;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity_type.manager'),
+      $container->get('renderer'),
+      $container->get('entity.repository')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function view(EntityInterface $node_preview, $view_mode_id = 'full', $langcode = NULL) {
+    $node_preview->preview_view_mode = $view_mode_id;
+    $build = parent::view($node_preview, $view_mode_id);
+
+    $build['#attached']['library'][] = 'node/drupal.node.preview';
+
+    // Don't render cache previews.
+    unset($build['#cache']);
+
+    return $build;
+  }
+
+  /**
+   * The _title_callback for the page that renders a single node in preview.
+   *
+   * @param \Drupal\Core\Entity\EntityInterface $node_preview
+   *   The current node.
+   *
+   * @return string
+   *   The page title.
+   */
+  public function title(EntityInterface $node_preview) {
+    return $this->entityRepository->getTranslationFromContext($node_preview)->label();
+  }
+
+}

core/modules/node/src/Controller/NodeViewController.php

@@ -0,0 +1,82 @@
+<?php
+
+namespace Drupal\node\Controller;
+
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\Controller\EntityViewController;
+use Drupal\Core\Entity\EntityRepositoryInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Render\RendererInterface;
+use Drupal\Core\Session\AccountInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Defines a controller to render a single node.
+ */
+class NodeViewController extends EntityViewController {
+
+  /**
+   * The current user.
+   *
+   * @var \Drupal\Core\Session\AccountInterface
+   */
+  protected $currentUser;
+
+  /**
+   * The entity repository service.
+   *
+   * @var \Drupal\Core\Entity\EntityRepositoryInterface
+   */
+  protected $entityRepository;
+
+  /**
+   * Creates a NodeViewController object.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   *   The entity type manager.
+   * @param \Drupal\Core\Render\RendererInterface $renderer
+   *   The renderer service.
+   * @param \Drupal\Core\Session\AccountInterface $current_user
+   *   The current user.
+   * @param \Drupal\Core\Entity\EntityRepositoryInterface $entity_repository
+   *   The entity repository.
+   */
+  public function __construct(EntityTypeManagerInterface $entity_type_manager, RendererInterface $renderer, AccountInterface $current_user, EntityRepositoryInterface $entity_repository) {
+    parent::__construct($entity_type_manager, $renderer);
+    $this->currentUser = $current_user;
+    $this->entityRepository = $entity_repository;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity_type.manager'),
+      $container->get('renderer'),
+      $container->get('current_user'),
+      $container->get('entity.repository')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function view(EntityInterface $node, $view_mode = 'full', $langcode = NULL) {
+    return parent::view($node, $view_mode);
+  }
+
+  /**
+   * The _title_callback for the page that renders a single node.
+   *
+   * @param \Drupal\Core\Entity\EntityInterface $node
+   *   The current node.
+   *
+   * @return string
+   *   The page title.
+   */
+  public function title(EntityInterface $node) {
+    return $this->entityRepository->getTranslationFromContext($node)->label();
+  }
+
+}

core/modules/node/src/Entity/Node.php

@@ -0,0 +1,367 @@
+<?php
+
+namespace Drupal\node\Entity;
+
+use Drupal\Core\Entity\EditorialContentEntityBase;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Field\BaseFieldDefinition;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\node\NodeInterface;
+use Drupal\user\EntityOwnerTrait;
+
+/**
+ * Defines the node entity class.
+ *
+ * @ContentEntityType(
+ *   id = "node",
+ *   label = @Translation("Content"),
+ *   label_collection = @Translation("Content"),
+ *   label_singular = @Translation("content item"),
+ *   label_plural = @Translation("content items"),
+ *   label_count = @PluralTranslation(
+ *     singular = "@count content item",
+ *     plural = "@count content items"
+ *   ),
+ *   bundle_label = @Translation("Content type"),
+ *   handlers = {
+ *     "storage" = "Drupal\node\NodeStorage",
+ *     "storage_schema" = "Drupal\node\NodeStorageSchema",
+ *     "view_builder" = "Drupal\node\NodeViewBuilder",
+ *     "access" = "Drupal\node\NodeAccessControlHandler",
+ *     "views_data" = "Drupal\node\NodeViewsData",
+ *     "form" = {
+ *       "default" = "Drupal\node\NodeForm",
+ *       "delete" = "Drupal\node\Form\NodeDeleteForm",
+ *       "edit" = "Drupal\node\NodeForm",
+ *       "delete-multiple-confirm" = "Drupal\node\Form\DeleteMultiple"
+ *     },
+ *     "route_provider" = {
+ *       "html" = "Drupal\node\Entity\NodeRouteProvider",
+ *     },
+ *     "list_builder" = "Drupal\node\NodeListBuilder",
+ *     "translation" = "Drupal\node\NodeTranslationHandler"
+ *   },
+ *   base_table = "node",
+ *   data_table = "node_field_data",
+ *   revision_table = "node_revision",
+ *   revision_data_table = "node_field_revision",
+ *   show_revision_ui = TRUE,
+ *   translatable = TRUE,
+ *   list_cache_contexts = { "user.node_grants:view" },
+ *   entity_keys = {
+ *     "id" = "nid",
+ *     "revision" = "vid",
+ *     "bundle" = "type",
+ *     "label" = "title",
+ *     "langcode" = "langcode",
+ *     "uuid" = "uuid",
+ *     "status" = "status",
+ *     "published" = "status",
+ *     "uid" = "uid",
+ *     "owner" = "uid",
+ *   },
+ *   revision_metadata_keys = {
+ *     "revision_user" = "revision_uid",
+ *     "revision_created" = "revision_timestamp",
+ *     "revision_log_message" = "revision_log"
+ *   },
+ *   bundle_entity_type = "node_type",
+ *   field_ui_base_route = "entity.node_type.edit_form",
+ *   common_reference_target = TRUE,
+ *   permission_granularity = "bundle",
+ *   collection_permission = "access content overview",
+ *   links = {
+ *     "canonical" = "/node/{node}",
+ *     "delete-form" = "/node/{node}/delete",
+ *     "delete-multiple-form" = "/admin/content/node/delete",
+ *     "edit-form" = "/node/{node}/edit",
+ *     "version-history" = "/node/{node}/revisions",
+ *     "revision" = "/node/{node}/revisions/{node_revision}/view",
+ *     "create" = "/node",
+ *   }
+ * )
+ */
+class Node extends EditorialContentEntityBase implements NodeInterface {
+
+  use EntityOwnerTrait;
+
+  /**
+   * Whether the node is being previewed or not.
+   *
+   * The variable is set to public as it will give a considerable performance
+   * improvement. See https://www.drupal.org/node/2498919.
+   *
+   * @var true|null
+   *   TRUE if the node is being previewed and NULL if it is not.
+   */
+  // phpcs:ignore Drupal.NamingConventions.ValidVariableName.LowerCamelName
+  public $in_preview = NULL;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function preSave(EntityStorageInterface $storage) {
+    parent::preSave($storage);
+
+    foreach (array_keys($this->getTranslationLanguages()) as $langcode) {
+      $translation = $this->getTranslation($langcode);
+
+      // If no owner has been set explicitly, make the anonymous user the owner.
+      if (!$translation->getOwner()) {
+        $translation->setOwnerId(0);
+      }
+    }
+
+    // If no revision author has been set explicitly, make the node owner the
+    // revision author.
+    if (!$this->getRevisionUser()) {
+      $this->setRevisionUserId($this->getOwnerId());
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function preSaveRevision(EntityStorageInterface $storage, \stdClass $record) {
+    parent::preSaveRevision($storage, $record);
+
+    if (!$this->isNewRevision() && isset($this->original) && (!isset($record->revision_log) || $record->revision_log === '')) {
+      // If we are updating an existing node without adding a new revision, we
+      // need to make sure $entity->revision_log is reset whenever it is empty.
+      // Therefore, this code allows us to avoid clobbering an existing log
+      // entry with an empty one.
+      $record->revision_log = $this->original->revision_log->value;
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function postSave(EntityStorageInterface $storage, $update = TRUE) {
+    parent::postSave($storage, $update);
+
+    // Update the node access table for this node, but only if it is the
+    // default revision. There's no need to delete existing records if the node
+    // is new.
+    if ($this->isDefaultRevision()) {
+      /** @var \Drupal\node\NodeAccessControlHandlerInterface $access_control_handler */
+      $access_control_handler = \Drupal::entityTypeManager()->getAccessControlHandler('node');
+      $grants = $access_control_handler->acquireGrants($this);
+      \Drupal::service('node.grant_storage')->write($this, $grants, NULL, $update);
+    }
+
+    // Reindex the node when it is updated. The node is automatically indexed
+    // when it is added, simply by being added to the node table.
+    if ($update) {
+      node_reindex_node_search($this->id());
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function preDelete(EntityStorageInterface $storage, array $entities) {
+    parent::preDelete($storage, $entities);
+
+    // Ensure that all nodes deleted are removed from the search index.
+    if (\Drupal::hasService('search.index')) {
+      /** @var \Drupal\search\SearchIndexInterface $search_index */
+      $search_index = \Drupal::service('search.index');
+      foreach ($entities as $entity) {
+        $search_index->clear('node_search', $entity->nid->value);
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function postDelete(EntityStorageInterface $storage, array $nodes) {
+    parent::postDelete($storage, $nodes);
+    \Drupal::service('node.grant_storage')->deleteNodeRecords(array_keys($nodes));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getType() {
+    return $this->bundle();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function access($operation = 'view', ?AccountInterface $account = NULL, $return_as_object = FALSE) {
+    // This override exists to set the operation to the default value "view".
+    return parent::access($operation, $account, $return_as_object);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getTitle() {
+    return $this->get('title')->value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setTitle($title) {
+    $this->set('title', $title);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCreatedTime() {
+    return $this->get('created')->value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setCreatedTime($timestamp) {
+    $this->set('created', $timestamp);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isPromoted() {
+    return (bool) $this->get('promote')->value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setPromoted($promoted) {
+    $this->set('promote', $promoted ? NodeInterface::PROMOTED : NodeInterface::NOT_PROMOTED);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isSticky() {
+    return (bool) $this->get('sticky')->value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setSticky($sticky) {
+    $this->set('sticky', $sticky ? NodeInterface::STICKY : NodeInterface::NOT_STICKY);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
+    $fields = parent::baseFieldDefinitions($entity_type);
+    $fields += static::ownerBaseFieldDefinitions($entity_type);
+
+    $fields['title'] = BaseFieldDefinition::create('string')
+      ->setLabel(t('Title'))
+      ->setRequired(TRUE)
+      ->setTranslatable(TRUE)
+      ->setRevisionable(TRUE)
+      ->setSetting('max_length', 255)
+      ->setDisplayOptions('view', [
+        'label' => 'hidden',
+        'type' => 'string',
+        'weight' => -5,
+      ])
+      ->setDisplayOptions('form', [
+        'type' => 'string_textfield',
+        'weight' => -5,
+      ])
+      ->setDisplayConfigurable('form', TRUE);
+
+    $fields['uid']
+      ->setLabel(t('Authored by'))
+      ->setDescription(t('The username of the content author.'))
+      ->setRevisionable(TRUE)
+      ->setDisplayOptions('view', [
+        'label' => 'hidden',
+        'type' => 'author',
+        'weight' => 0,
+      ])
+      ->setDisplayOptions('form', [
+        'type' => 'entity_reference_autocomplete',
+        'weight' => 5,
+        'settings' => [
+          'match_operator' => 'CONTAINS',
+          'size' => '60',
+          'placeholder' => '',
+        ],
+      ])
+      ->setDisplayConfigurable('form', TRUE);
+
+    $fields['status']
+      ->setDisplayOptions('form', [
+        'type' => 'boolean_checkbox',
+        'settings' => [
+          'display_label' => TRUE,
+        ],
+        'weight' => 120,
+      ])
+      ->setDisplayConfigurable('form', TRUE);
+
+    $fields['created'] = BaseFieldDefinition::create('created')
+      ->setLabel(t('Authored on'))
+      ->setDescription(t('The date and time that the content was created.'))
+      ->setRevisionable(TRUE)
+      ->setTranslatable(TRUE)
+      ->setDisplayOptions('view', [
+        'label' => 'hidden',
+        'type' => 'timestamp',
+        'weight' => 0,
+      ])
+      ->setDisplayOptions('form', [
+        'type' => 'datetime_timestamp',
+        'weight' => 10,
+      ])
+      ->setDisplayConfigurable('form', TRUE);
+
+    $fields['changed'] = BaseFieldDefinition::create('changed')
+      ->setLabel(t('Changed'))
+      ->setDescription(t('The time that the node was last edited.'))
+      ->setRevisionable(TRUE)
+      ->setTranslatable(TRUE);
+
+    $fields['promote'] = BaseFieldDefinition::create('boolean')
+      ->setLabel(t('Promoted to front page'))
+      ->setRevisionable(TRUE)
+      ->setTranslatable(TRUE)
+      ->setDefaultValue(TRUE)
+      ->setDisplayOptions('form', [
+        'type' => 'boolean_checkbox',
+        'settings' => [
+          'display_label' => TRUE,
+        ],
+        'weight' => 15,
+      ])
+      ->setDisplayConfigurable('form', TRUE);
+
+    $fields['sticky'] = BaseFieldDefinition::create('boolean')
+      ->setLabel(t('Sticky at top of lists'))
+      ->setRevisionable(TRUE)
+      ->setTranslatable(TRUE)
+      ->setDefaultValue(FALSE)
+      ->setDisplayOptions('form', [
+        'type' => 'boolean_checkbox',
+        'settings' => [
+          'display_label' => TRUE,
+        ],
+        'weight' => 16,
+      ])
+      ->setDisplayConfigurable('form', TRUE);
+
+    return $fields;
+  }
+
+}

core/modules/node/src/Entity/NodeRouteProvider.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Drupal\node\Entity;
+
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Entity\Routing\EntityRouteProviderInterface;
+use Symfony\Component\Routing\Route;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * Provides routes for nodes.
+ */
+class NodeRouteProvider implements EntityRouteProviderInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRoutes(EntityTypeInterface $entity_type) {
+    $route_collection = new RouteCollection();
+    $route = (new Route('/node/{node}'))
+      ->addDefaults([
+        '_controller' => '\Drupal\node\Controller\NodeViewController::view',
+        '_title_callback' => '\Drupal\node\Controller\NodeViewController::title',
+      ])
+      ->setRequirement('node', '\d+')
+      ->setRequirement('_entity_access', 'node.view');
+    $route_collection->add('entity.node.canonical', $route);
+
+    $route = (new Route('/node/{node}/delete'))
+      ->addDefaults([
+        '_entity_form' => 'node.delete',
+        '_title' => 'Delete',
+      ])
+      ->setRequirement('node', '\d+')
+      ->setRequirement('_entity_access', 'node.delete')
+      ->setOption('_node_operation_route', TRUE);
+    $route_collection->add('entity.node.delete_form', $route);
+
+    $route = (new Route('/node/{node}/edit'))
+      ->setDefault('_entity_form', 'node.edit')
+      ->setRequirement('_entity_access', 'node.update')
+      ->setRequirement('node', '\d+')
+      ->setOption('_node_operation_route', TRUE);
+    $route_collection->add('entity.node.edit_form', $route);
+
+    return $route_collection;
+  }
+
+}

core/modules/node/src/Entity/NodeType.php

@@ -0,0 +1,219 @@
+<?php
+
+namespace Drupal\node\Entity;
+
+use Drupal\Core\Config\Entity\ConfigEntityBundleBase;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\node\NodeTypeInterface;
+
+/**
+ * Defines the Node type configuration entity.
+ *
+ * @ConfigEntityType(
+ *   id = "node_type",
+ *   label = @Translation("Content type"),
+ *   label_collection = @Translation("Content types"),
+ *   label_singular = @Translation("content type"),
+ *   label_plural = @Translation("content types"),
+ *   label_count = @PluralTranslation(
+ *     singular = "@count content type",
+ *     plural = "@count content types",
+ *   ),
+ *   handlers = {
+ *     "access" = "Drupal\node\NodeTypeAccessControlHandler",
+ *     "form" = {
+ *       "add" = "Drupal\node\NodeTypeForm",
+ *       "edit" = "Drupal\node\NodeTypeForm",
+ *       "delete" = "Drupal\node\Form\NodeTypeDeleteConfirm"
+ *     },
+ *     "route_provider" = {
+ *       "permissions" = "Drupal\user\Entity\EntityPermissionsRouteProvider",
+ *     },
+ *     "list_builder" = "Drupal\node\NodeTypeListBuilder",
+ *   },
+ *   admin_permission = "administer content types",
+ *   config_prefix = "type",
+ *   bundle_of = "node",
+ *   entity_keys = {
+ *     "id" = "type",
+ *     "label" = "name"
+ *   },
+ *   links = {
+ *     "edit-form" = "/admin/structure/types/manage/{node_type}",
+ *     "delete-form" = "/admin/structure/types/manage/{node_type}/delete",
+ *     "entity-permissions-form" = "/admin/structure/types/manage/{node_type}/permissions",
+ *     "collection" = "/admin/structure/types",
+ *   },
+ *   config_export = {
+ *     "name",
+ *     "type",
+ *     "description",
+ *     "help",
+ *     "new_revision",
+ *     "preview_mode",
+ *     "display_submitted",
+ *   }
+ * )
+ */
+class NodeType extends ConfigEntityBundleBase implements NodeTypeInterface {
+
+  /**
+   * The machine name of this node type.
+   *
+   * @var string
+   *
+   * @todo Rename to $id.
+   */
+  protected $type;
+
+  /**
+   * The human-readable name of the node type.
+   *
+   * @var string
+   *
+   * @todo Rename to $label.
+   */
+  protected $name;
+
+  /**
+   * A brief description of this node type.
+   *
+   * @var string|null
+   */
+  protected $description = NULL;
+
+  /**
+   * Help information shown to the user when creating a Node of this type.
+   *
+   * @var string|null
+   */
+  protected $help = NULL;
+
+  /**
+   * Default value of the 'Create new revision' checkbox of this node type.
+   *
+   * @var bool
+   */
+  protected $new_revision = TRUE;
+
+  /**
+   * The preview mode.
+   *
+   * @var int
+   */
+  protected $preview_mode = DRUPAL_OPTIONAL;
+
+  /**
+   * Display setting for author and date Submitted by post information.
+   *
+   * @var bool
+   */
+  protected $display_submitted = TRUE;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function id() {
+    return $this->type;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isLocked() {
+    $locked = \Drupal::state()->get('node.type.locked');
+    return $locked[$this->id()] ?? FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setNewRevision($new_revision) {
+    $this->new_revision = $new_revision;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function displaySubmitted() {
+    return $this->display_submitted;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setDisplaySubmitted($display_submitted) {
+    $this->display_submitted = $display_submitted;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getPreviewMode() {
+    return $this->preview_mode;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setPreviewMode($preview_mode) {
+    $this->preview_mode = $preview_mode;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getHelp() {
+    return $this->help ?? '';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return $this->description ?? '';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function postSave(EntityStorageInterface $storage, $update = TRUE) {
+    parent::postSave($storage, $update);
+
+    if ($update && $this->getOriginalId() != $this->id()) {
+      $update_count = $storage->updateType($this->getOriginalId(), $this->id());
+      if ($update_count) {
+        \Drupal::messenger()->addStatus(\Drupal::translation()->formatPlural($update_count,
+          'Changed the content type of 1 post from %old-type to %type.',
+          'Changed the content type of @count posts from %old-type to %type.',
+          [
+            '%old-type' => $this->getOriginalId(),
+            '%type' => $this->id(),
+          ]));
+      }
+    }
+    if ($update) {
+      // Clear the cached field definitions as some settings affect the field
+      // definitions.
+      \Drupal::service('entity_field.manager')->clearCachedFieldDefinitions();
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function postDelete(EntityStorageInterface $storage, array $entities) {
+    parent::postDelete($storage, $entities);
+
+    // Clear the node type cache to reflect the removal.
+    $storage->resetCache(array_keys($entities));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function shouldCreateNewRevision() {
+    return $this->new_revision;
+  }
+
+}

core/modules/node/src/EventSubscriber/NodeAdminRouteSubscriber.php

@@ -0,0 +1,78 @@
+<?php
+
+namespace Drupal\node\EventSubscriber;
+
+use Drupal\Core\Config\ConfigCrudEvent;
+use Drupal\Core\Config\ConfigEvents;
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Routing\RouteBuilderInterface;
+use Drupal\Core\Routing\RouteSubscriberBase;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * Sets the _admin_route for specific node-related routes.
+ */
+class NodeAdminRouteSubscriber extends RouteSubscriberBase {
+
+  /**
+   * The config factory.
+   *
+   * @var \Drupal\Core\Config\ConfigFactoryInterface
+   */
+  protected $configFactory;
+
+  /**
+   * The router builder.
+   *
+   * @var \Drupal\Core\Routing\RouteBuilderInterface
+   */
+  protected $routerBuilder;
+
+  /**
+   * Constructs a new NodeAdminRouteSubscriber.
+   *
+   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+   *   The config factory.
+   * @param \Drupal\Core\Routing\RouteBuilderInterface $router_builder
+   *   The router builder service.
+   */
+  public function __construct(ConfigFactoryInterface $config_factory, RouteBuilderInterface $router_builder) {
+    $this->configFactory = $config_factory;
+    $this->routerBuilder = $router_builder;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function alterRoutes(RouteCollection $collection) {
+    if ($this->configFactory->get('node.settings')->get('use_admin_theme')) {
+      foreach ($collection->all() as $route) {
+        if ($route->hasOption('_node_operation_route')) {
+          $route->setOption('_admin_route', TRUE);
+        }
+      }
+    }
+  }
+
+  /**
+   * Rebuilds the router when node.settings:use_admin_theme is changed.
+   *
+   * @param \Drupal\Core\Config\ConfigCrudEvent $event
+   *   The event object.
+   */
+  public function onConfigSave(ConfigCrudEvent $event) {
+    if ($event->getConfig()->getName() === 'node.settings' && $event->isChanged('use_admin_theme')) {
+      $this->routerBuilder->setRebuildNeeded();
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents(): array {
+    $events = parent::getSubscribedEvents();
+    $events[ConfigEvents::SAVE][] = ['onConfigSave', 0];
+    return $events;
+  }
+
+}

core/modules/node/src/EventSubscriber/NodeTranslationExceptionSubscriber.php

@@ -0,0 +1,128 @@
+<?php
+
+namespace Drupal\node\EventSubscriber;
+
+use Drupal\Core\KeyValueStore\KeyValueFactoryInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\Core\ParamConverter\ParamNotConvertedException;
+use Drupal\Core\Routing\UrlGeneratorInterface;
+use Drupal\Core\State\StateInterface;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\HttpFoundation\RedirectResponse;
+use Symfony\Component\HttpKernel\Event\ExceptionEvent;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\HttpKernel\KernelEvents;
+
+/**
+ * Redirect node translations that have been consolidated by migration.
+ *
+ * If we migrated node translations from Drupal 6 or 7, these nodes are now
+ * combined with their source language node. Since there still might be
+ * references to the URLs of these now consolidated nodes, this service catches
+ * the 404s and try to redirect them to the right node in the right language.
+ *
+ * The mapping of the old nids to the new ones is made by the
+ * NodeTranslationMigrateSubscriber class during the migration and is stored
+ * in the "node_translation_redirect" key/value collection.
+ *
+ * @see \Drupal\node\NodeServiceProvider
+ * @see \Drupal\node\EventSubscriber\NodeTranslationMigrateSubscriber
+ */
+class NodeTranslationExceptionSubscriber implements EventSubscriberInterface {
+
+  /**
+   * The key value factory.
+   *
+   * @var \Drupal\Core\KeyValueStore\KeyValueFactoryInterface
+   */
+  protected $keyValue;
+
+  /**
+   * The language manager.
+   *
+   * @var \Drupal\Core\Language\LanguageManagerInterface
+   */
+  protected $languageManager;
+
+  /**
+   * The URL generator.
+   *
+   * @var \Drupal\Core\Routing\UrlGeneratorInterface
+   */
+  protected $urlGenerator;
+
+  /**
+   * The state service.
+   *
+   * @var \Drupal\Core\State\StateInterface
+   */
+  protected $state;
+
+  /**
+   * Constructs the NodeTranslationExceptionSubscriber.
+   *
+   * @param \Drupal\Core\KeyValueStore\KeyValueFactoryInterface $key_value
+   *   The key value factory.
+   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+   *   The language manager.
+   * @param \Drupal\Core\Routing\UrlGeneratorInterface $url_generator
+   *   The URL generator.
+   * @param \Drupal\Core\State\StateInterface $state
+   *   The state service.
+   */
+  public function __construct(KeyValueFactoryInterface $key_value, LanguageManagerInterface $language_manager, UrlGeneratorInterface $url_generator, StateInterface $state) {
+    $this->keyValue = $key_value;
+    $this->languageManager = $language_manager;
+    $this->urlGenerator = $url_generator;
+    $this->state = $state;
+  }
+
+  /**
+   * Redirects not found node translations using the key value collection.
+   *
+   * @param \Symfony\Component\HttpKernel\Event\ExceptionEvent $event
+   *   The exception event.
+   */
+  public function onException(ExceptionEvent $event) {
+    $exception = $event->getThrowable();
+
+    // If this is not a 404, we don't need to check for a redirection.
+    if (!($exception instanceof NotFoundHttpException)) {
+      return;
+    }
+
+    $previous_exception = $exception->getPrevious();
+    if ($previous_exception instanceof ParamNotConvertedException) {
+      $route_name = $previous_exception->getRouteName();
+      $parameters = $previous_exception->getRawParameters();
+      if ($route_name === 'entity.node.canonical' && isset($parameters['node'])) {
+        // If the node_translation_redirect state is not set, we don't need to check
+        // for a redirection.
+        if (!$this->state->get('node_translation_redirect')) {
+          return;
+        }
+        $old_nid = $parameters['node'];
+        $collection = $this->keyValue->get('node_translation_redirect');
+        if ($old_nid && $value = $collection->get($old_nid)) {
+          [$nid, $langcode] = $value;
+          $language = $this->languageManager->getLanguage($langcode);
+          $url = $this->urlGenerator->generateFromRoute('entity.node.canonical', ['node' => $nid], ['language' => $language]);
+          $response = new RedirectResponse($url, 301);
+          $event->setResponse($response);
+        }
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents(): array {
+    $events = [];
+
+    $events[KernelEvents::EXCEPTION] = ['onException'];
+
+    return $events;
+  }
+
+}

core/modules/node/src/EventSubscriber/NodeTranslationMigrateSubscriber.php

@@ -0,0 +1,113 @@
+<?php
+
+namespace Drupal\node\EventSubscriber;
+
+use Drupal\Core\KeyValueStore\KeyValueFactoryInterface;
+use Drupal\Core\State\StateInterface;
+use Drupal\migrate\Event\EventBase;
+use Drupal\migrate\Event\MigrateEvents;
+use Drupal\migrate\Event\MigrateImportEvent;
+use Drupal\migrate\Event\MigratePostRowSaveEvent;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * Creates a key value collection for migrated node translation mappings.
+ *
+ * If we are migrating node translations from Drupal 6 or 7, these nodes will be
+ * combined with their source node. Since there still might be references to the
+ * URLs of these now consolidated nodes, this service saves the mapping between
+ * the old nids to the new ones to be able to redirect them to the right node in
+ * the right language.
+ *
+ * The mapping is stored in the "node_translation_redirect" key/value collection
+ * and the redirection is made by the NodeTranslationExceptionSubscriber class.
+ *
+ * @see \Drupal\node\NodeServiceProvider
+ * @see \Drupal\node\EventSubscriber\NodeTranslationExceptionSubscriber
+ */
+class NodeTranslationMigrateSubscriber implements EventSubscriberInterface {
+
+  /**
+   * The key value factory.
+   *
+   * @var \Drupal\Core\KeyValueStore\KeyValueFactoryInterface
+   */
+  protected $keyValue;
+
+  /**
+   * The state service.
+   *
+   * @var \Drupal\Core\State\StateInterface
+   */
+  protected $state;
+
+  /**
+   * Constructs the NodeTranslationMigrateSubscriber.
+   *
+   * @param \Drupal\Core\KeyValueStore\KeyValueFactoryInterface $key_value
+   *   The key value factory.
+   * @param \Drupal\Core\State\StateInterface $state
+   *   The state service.
+   */
+  public function __construct(KeyValueFactoryInterface $key_value, StateInterface $state) {
+    $this->keyValue = $key_value;
+    $this->state = $state;
+  }
+
+  /**
+   * Helper method to check if we are migrating translated nodes.
+   *
+   * @param \Drupal\migrate\Event\EventBase $event
+   *   The migrate event.
+   *
+   * @return bool
+   *   True if we are migrating translated nodes, false otherwise.
+   */
+  protected function isNodeTranslationsMigration(EventBase $event) {
+    $migration = $event->getMigration();
+    $source_configuration = $migration->getSourceConfiguration();
+    $destination_configuration = $migration->getDestinationConfiguration();
+    return !empty($source_configuration['translations']) && $destination_configuration['plugin'] === 'entity:node';
+  }
+
+  /**
+   * Maps the old nid to the new one in the key value collection.
+   *
+   * @param \Drupal\migrate\Event\MigratePostRowSaveEvent $event
+   *   The migrate post row save event.
+   */
+  public function onPostRowSave(MigratePostRowSaveEvent $event) {
+    if ($this->isNodeTranslationsMigration($event)) {
+      $row = $event->getRow();
+      $source = $row->getSource();
+      $destination = $row->getDestination();
+      $collection = $this->keyValue->get('node_translation_redirect');
+      $collection->set($source['nid'], [$destination['nid'], $destination['langcode']]);
+    }
+  }
+
+  /**
+   * Set the node_translation_redirect state to enable the redirects.
+   *
+   * @param \Drupal\migrate\Event\MigrateImportEvent $event
+   *   The migrate import event.
+   */
+  public function onPostImport(MigrateImportEvent $event) {
+    if ($this->isNodeTranslationsMigration($event)) {
+      $this->state->set('node_translation_redirect', TRUE);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents(): array {
+    $events = [];
+
+    $events[MigrateEvents::POST_ROW_SAVE] = ['onPostRowSave'];
+    $events[MigrateEvents::POST_IMPORT] = ['onPostImport'];
+
+    return $events;
+  }
+
+}

core/modules/node/src/Form/DeleteMultiple.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Drupal\node\Form;
+
+use Drupal\Core\Entity\Form\DeleteMultipleForm as EntityDeleteMultipleForm;
+use Drupal\Core\Url;
+
+/**
+ * Provides a node deletion confirmation form.
+ *
+ * @internal
+ */
+class DeleteMultiple extends EntityDeleteMultipleForm {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return new Url('system.admin_content');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getDeletedMessage($count) {
+    return $this->formatPlural($count, 'Deleted @count content item.', 'Deleted @count content items.');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getInaccessibleMessage($count) {
+    return $this->formatPlural($count, "@count content item has not been deleted because you do not have the necessary permissions.", "@count content items have not been deleted because you do not have the necessary permissions.");
+  }
+
+}

core/modules/node/src/Form/NodeDeleteForm.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace Drupal\node\Form;
+
+use Drupal\Core\Entity\ContentEntityDeleteForm;
+
+/**
+ * Provides a form for deleting a node.
+ *
+ * @internal
+ */
+class NodeDeleteForm extends ContentEntityDeleteForm {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getDeletionMessage() {
+    /** @var \Drupal\node\NodeInterface $entity */
+    $entity = $this->getEntity();
+
+    $node_type_storage = $this->entityTypeManager->getStorage('node_type');
+    $node_type = $node_type_storage->load($entity->bundle());
+
+    if (!$entity->isDefaultTranslation()) {
+      return $this->t('@language translation of the @type %label has been deleted.', [
+        '@language' => $entity->language()->getName(),
+        '@type' => $node_type->label(),
+        '%label' => $entity->label(),
+      ]);
+    }
+
+    return $this->t('The @type %title has been deleted.', [
+      '@type' => $node_type->label(),
+      '%title' => $this->getEntity()->label(),
+    ]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function logDeletionMessage() {
+    /** @var \Drupal\node\NodeInterface $entity */
+    $entity = $this->getEntity();
+    $this->logger('content')->info('@type: deleted %title.', ['@type' => $entity->getType(), '%title' => $entity->label()]);
+  }
+
+}

core/modules/node/src/Form/NodePreviewForm.php

@@ -0,0 +1,145 @@
+<?php
+
+namespace Drupal\node\Form;
+
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityDisplayRepositoryInterface;
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Contains a form for switching the view mode of a node during preview.
+ *
+ * @internal
+ */
+class NodePreviewForm extends FormBase {
+
+  /**
+   * The entity display repository.
+   *
+   * @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface
+   */
+  protected $entityDisplayRepository;
+
+  /**
+   * The config factory.
+   *
+   * @var \Drupal\Core\Config\ConfigFactoryInterface
+   */
+  protected $configFactory;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity_display.repository'),
+      $container->get('config.factory')
+    );
+  }
+
+  /**
+   * Constructs a new NodePreviewForm.
+   *
+   * @param \Drupal\Core\Entity\EntityDisplayRepositoryInterface $entity_display_repository
+   *   The entity display repository.
+   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+   *   The configuration factory.
+   */
+  public function __construct(EntityDisplayRepositoryInterface $entity_display_repository, ConfigFactoryInterface $config_factory) {
+    $this->entityDisplayRepository = $entity_display_repository;
+    $this->configFactory = $config_factory;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'node_preview_form_select';
+  }
+
+  /**
+   * Form constructor.
+   *
+   * @param array $form
+   *   An associative array containing the structure of the form.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current state of the form.
+   * @param \Drupal\Core\Entity\EntityInterface $node
+   *   The node being previews
+   *
+   * @return array
+   *   The form structure.
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, ?EntityInterface $node = NULL) {
+    $view_mode = $node->preview_view_mode;
+
+    $query_options = ['query' => ['uuid' => $node->uuid()]];
+    $query = $this->getRequest()->query;
+    if ($query->has('destination')) {
+      $query_options['query']['destination'] = $query->get('destination');
+    }
+
+    $form['backlink'] = [
+      '#type' => 'link',
+      '#title' => $this->t('Back to content editing'),
+      '#url' => $node->isNew() ? Url::fromRoute('node.add', ['node_type' => $node->bundle()]) : $node->toUrl('edit-form'),
+      '#options' => ['attributes' => ['class' => ['node-preview-backlink']]] + $query_options,
+    ];
+
+    // Always show full as an option, even if the display is not enabled.
+    $view_mode_options = ['full' => $this->t('Full')] + $this->entityDisplayRepository->getViewModeOptionsByBundle('node', $node->bundle());
+
+    // Unset view modes that are not used in the front end.
+    unset($view_mode_options['default']);
+    unset($view_mode_options['rss']);
+    unset($view_mode_options['search_index']);
+
+    $form['uuid'] = [
+      '#type' => 'value',
+      '#value' => $node->uuid(),
+    ];
+
+    $form['view_mode'] = [
+      '#type' => 'select',
+      '#title' => $this->t('View mode'),
+      '#options' => $view_mode_options,
+      '#default_value' => $view_mode,
+      '#attributes' => [
+        'data-drupal-autosubmit' => TRUE,
+      ],
+    ];
+
+    $form['submit'] = [
+      '#type' => 'submit',
+      '#value' => $this->t('Switch'),
+      '#attributes' => [
+        'class' => ['js-hide'],
+      ],
+    ];
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $route_parameters = [
+      'node_preview' => $form_state->getValue('uuid'),
+      'view_mode_id' => $form_state->getValue('view_mode'),
+    ];
+
+    $options = [];
+    $query = $this->getRequest()->query;
+    if ($query->has('destination')) {
+      $options['query']['destination'] = $query->get('destination');
+      $query->remove('destination');
+    }
+    $form_state->setRedirect('entity.node.preview', $route_parameters, $options);
+  }
+
+}

core/modules/node/src/Form/NodeRevisionDeleteForm.php

@@ -0,0 +1,168 @@
+<?php
+
+namespace Drupal\node\Form;
+
+use Drupal\Core\Database\Connection;
+use Drupal\Core\Access\AccessManagerInterface;
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Drupal\node\NodeInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for deleting a node revision.
+ *
+ * @internal
+ */
+class NodeRevisionDeleteForm extends ConfirmFormBase {
+
+  /**
+   * The node revision.
+   *
+   * @var \Drupal\node\NodeInterface
+   */
+  protected $revision;
+
+  /**
+   * The node storage.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  protected $nodeStorage;
+
+  /**
+   * The node type storage.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  protected $nodeTypeStorage;
+
+  /**
+   * The access manager.
+   *
+   * @var \Drupal\Core\Access\AccessManagerInterface
+   */
+  protected $accessManager;
+
+  /**
+   * The database connection.
+   *
+   * @var \Drupal\Core\Database\Connection
+   */
+  protected $connection;
+
+  /**
+   * The date formatter service.
+   *
+   * @var \Drupal\Core\Datetime\DateFormatterInterface
+   */
+  protected $dateFormatter;
+
+  /**
+   * Constructs a new NodeRevisionDeleteForm.
+   *
+   * @param \Drupal\Core\Entity\EntityStorageInterface $node_storage
+   *   The node storage.
+   * @param \Drupal\Core\Entity\EntityStorageInterface $node_type_storage
+   *   The node type storage.
+   * @param \Drupal\Core\Access\AccessManagerInterface|\Drupal\Core\Database\Connection $access_manager
+   *   The access manager.
+   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+   *   The date formatter service.
+   */
+  public function __construct(EntityStorageInterface $node_storage, EntityStorageInterface $node_type_storage, AccessManagerInterface|Connection $access_manager, DateFormatterInterface $date_formatter) {
+    $this->nodeStorage = $node_storage;
+    $this->nodeTypeStorage = $node_type_storage;
+    $this->accessManager = $access_manager;
+    $this->dateFormatter = $date_formatter;
+    if ($access_manager instanceof Connection) {
+      $this->connection = $access_manager;
+      $this->accessManager = func_get_arg(3);
+      @trigger_error('Calling ' . __CLASS__ . '::_construct() with the $connection argument is deprecated in drupal:10.1.0 and is removed from drupal:11.0.0. See https://www.drupal.org/node/3343754', E_USER_DEPRECATED);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    $entity_type_manager = $container->get('entity_type.manager');
+    return new static(
+      $entity_type_manager->getStorage('node'),
+      $entity_type_manager->getStorage('node_type'),
+      $container->get('access_manager'),
+      $container->get('date.formatter')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'node_revision_delete_confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return $this->t('Are you sure you want to delete the revision from %revision-date?', [
+      '%revision-date' => $this->dateFormatter->format($this->revision->getRevisionCreationTime()),
+    ]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return new Url('entity.node.version_history', ['node' => $this->revision->id()]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return $this->t('Delete');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, ?NodeInterface $node_revision = NULL) {
+    $this->revision = $node_revision;
+    $form = parent::buildForm($form, $form_state);
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    /** @var \Drupal\Core\Entity\RevisionableStorageInterface $storage */
+    $storage = $this->nodeStorage;
+    $storage->deleteRevision($this->revision->getRevisionId());
+
+    $this->logger('content')->info('@type: deleted %title revision %revision.', ['@type' => $this->revision->bundle(), '%title' => $this->revision->label(), '%revision' => $this->revision->getRevisionId()]);
+    $node_type = $this->nodeTypeStorage->load($this->revision->bundle())->label();
+    $this->messenger()
+      ->addStatus($this->t('Revision from %revision-date of @type %title has been deleted.', [
+        '%revision-date' => $this->dateFormatter->format($this->revision->getRevisionCreationTime()),
+        '@type' => $node_type,
+        '%title' => $this->revision->label(),
+      ]));
+    // Set redirect to the revisions history page.
+    $route_name = 'entity.node.version_history';
+    $parameters = ['node' => $this->revision->id()];
+    // If no revisions found, or the user does not have access to the revisions
+    // page, then redirect to the canonical node page instead.
+    if (!$this->accessManager->checkNamedRoute($route_name, $parameters) || count($this->nodeStorage->revisionIds($this->revision)) === 1) {
+      $route_name = 'entity.node.canonical';
+    }
+    $form_state->setRedirect($route_name, $parameters);
+  }
+
+}

core/modules/node/src/Form/NodeRevisionRevertForm.php

@@ -0,0 +1,167 @@
+<?php
+
+namespace Drupal\node\Form;
+
+use Drupal\Component\Datetime\TimeInterface;
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Drupal\node\NodeInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for reverting a node revision.
+ *
+ * @internal
+ */
+class NodeRevisionRevertForm extends ConfirmFormBase {
+
+  /**
+   * The node revision.
+   *
+   * @var \Drupal\node\NodeInterface
+   */
+  protected $revision;
+
+  /**
+   * The node storage.
+   *
+   * @var \Drupal\node\NodeStorageInterface
+   */
+  protected $nodeStorage;
+
+  /**
+   * The date formatter service.
+   *
+   * @var \Drupal\Core\Datetime\DateFormatterInterface
+   */
+  protected $dateFormatter;
+
+  /**
+   * The time service.
+   *
+   * @var \Drupal\Component\Datetime\TimeInterface
+   */
+  protected $time;
+
+  /**
+   * Constructs a new NodeRevisionRevertForm.
+   *
+   * @param \Drupal\Core\Entity\EntityStorageInterface $node_storage
+   *   The node storage.
+   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+   *   The date formatter service.
+   * @param \Drupal\Component\Datetime\TimeInterface $time
+   *   The time service.
+   */
+  public function __construct(EntityStorageInterface $node_storage, DateFormatterInterface $date_formatter, TimeInterface $time) {
+    $this->nodeStorage = $node_storage;
+    $this->dateFormatter = $date_formatter;
+    $this->time = $time;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity_type.manager')->getStorage('node'),
+      $container->get('date.formatter'),
+      $container->get('datetime.time')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'node_revision_revert_confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return $this->t('Are you sure you want to revert to the revision from %revision-date?', ['%revision-date' => $this->dateFormatter->format($this->revision->getRevisionCreationTime())]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return new Url('entity.node.version_history', ['node' => $this->revision->id()]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return $this->t('Revert');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return '';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, ?NodeInterface $node_revision = NULL) {
+    $this->revision = $node_revision;
+    $form = parent::buildForm($form, $form_state);
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    // The revision timestamp will be updated when the revision is saved. Keep
+    // the original one for the confirmation message.
+    $original_revision_timestamp = $this->revision->getRevisionCreationTime();
+
+    $this->revision = $this->prepareRevertedRevision($this->revision, $form_state);
+    $this->revision->revision_log = $this->t('Copy of the revision from %date.', ['%date' => $this->dateFormatter->format($original_revision_timestamp)]);
+    $this->revision->setRevisionUserId($this->currentUser()->id());
+    $this->revision->setRevisionCreationTime($this->time->getRequestTime());
+    $this->revision->setChangedTime($this->time->getRequestTime());
+    $this->revision->save();
+
+    $this->logger('content')->info('@type: reverted %title revision %revision.', ['@type' => $this->revision->bundle(), '%title' => $this->revision->label(), '%revision' => $this->revision->getRevisionId()]);
+    $this->messenger()
+      ->addStatus($this->t('@type %title has been reverted to the revision from %revision-date.', [
+        '@type' => node_get_type_label($this->revision),
+        '%title' => $this->revision->label(),
+        '%revision-date' => $this->dateFormatter->format($original_revision_timestamp),
+      ]));
+    $form_state->setRedirect(
+      'entity.node.version_history',
+      ['node' => $this->revision->id()]
+    );
+  }
+
+  /**
+   * Prepares a revision to be reverted.
+   *
+   * @param \Drupal\node\NodeInterface $revision
+   *   The revision to be reverted.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current state of the form.
+   *
+   * @return \Drupal\node\NodeInterface
+   *   The prepared revision ready to be stored.
+   */
+  protected function prepareRevertedRevision(NodeInterface $revision, FormStateInterface $form_state) {
+    $revision->setNewRevision();
+    $revision->isDefaultRevision(TRUE);
+
+    return $revision;
+  }
+
+}

core/modules/node/src/Form/NodeRevisionRevertTranslationForm.php

@@ -0,0 +1,114 @@
+<?php
+
+namespace Drupal\node\Form;
+
+use Drupal\Component\Datetime\TimeInterface;
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\node\NodeInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for reverting a node revision for a single translation.
+ *
+ * @internal
+ */
+class NodeRevisionRevertTranslationForm extends NodeRevisionRevertForm {
+
+  /**
+   * The language to be reverted.
+   *
+   * @var string
+   */
+  protected $langcode;
+
+  /**
+   * The language manager.
+   *
+   * @var \Drupal\Core\Language\LanguageManagerInterface
+   */
+  protected $languageManager;
+
+  /**
+   * Constructs a new NodeRevisionRevertTranslationForm.
+   *
+   * @param \Drupal\Core\Entity\EntityStorageInterface $node_storage
+   *   The node storage.
+   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+   *   The date formatter service.
+   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+   *   The language manager.
+   * @param \Drupal\Component\Datetime\TimeInterface $time
+   *   The time service.
+   */
+  public function __construct(EntityStorageInterface $node_storage, DateFormatterInterface $date_formatter, LanguageManagerInterface $language_manager, TimeInterface $time) {
+    parent::__construct($node_storage, $date_formatter, $time);
+    $this->languageManager = $language_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity_type.manager')->getStorage('node'),
+      $container->get('date.formatter'),
+      $container->get('language_manager'),
+      $container->get('datetime.time')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'node_revision_revert_translation_confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return $this->t('Are you sure you want to revert @language translation to the revision from %revision-date?', ['@language' => $this->languageManager->getLanguageName($this->langcode), '%revision-date' => $this->dateFormatter->format($this->revision->getRevisionCreationTime())]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return '';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, $node_revision = NULL, $langcode = NULL) {
+    $this->langcode = $langcode;
+    $form = parent::buildForm($form, $form_state, $node_revision);
+
+    // Unless untranslatable fields are configured to affect only the default
+    // translation, we need to ask the user whether they should be included in
+    // the revert process.
+    $default_translation_affected = $this->revision->isDefaultTranslationAffectedOnly();
+    $form['revert_untranslated_fields'] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Revert content shared among translations'),
+      '#default_value' => $default_translation_affected && $this->revision->getTranslation($this->langcode)->isDefaultTranslation(),
+      '#access' => !$default_translation_affected,
+    ];
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function prepareRevertedRevision(NodeInterface $revision, FormStateInterface $form_state) {
+    $revert_untranslated_fields = (bool) $form_state->getValue('revert_untranslated_fields');
+    $translation = $revision->getTranslation($this->langcode);
+    return $this->nodeStorage->createRevision($translation, TRUE, $revert_untranslated_fields);
+  }
+
+}

core/modules/node/src/Form/NodeTypeDeleteConfirm.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Drupal\node\Form;
+
+use Drupal\Core\Entity\EntityDeleteForm;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Provides a form for content type deletion.
+ *
+ * @internal
+ */
+class NodeTypeDeleteConfirm extends EntityDeleteForm {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    $num_nodes = $this->entityTypeManager->getStorage('node')->getQuery()
+      ->accessCheck(FALSE)
+      ->condition('type', $this->entity->id())
+      ->count()
+      ->execute();
+    if ($num_nodes) {
+      $caption = '<p>' . $this->formatPlural($num_nodes, '%type is used by 1 piece of content on your site. You can not remove this content type until you have removed all of the %type content.', '%type is used by @count pieces of content on your site. You may not remove %type until you have removed all of the %type content.', ['%type' => $this->entity->label()]) . '</p>';
+      $form['#title'] = $this->getQuestion();
+      $form['description'] = ['#markup' => $caption];
+      return $form;
+    }
+
+    return parent::buildForm($form, $form_state);
+  }
+
+}

core/modules/node/src/Form/RebuildPermissionsForm.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace Drupal\node\Form;
+
+use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+
+/**
+ * Form for rebuilding permissions.
+ *
+ * @internal
+ */
+class RebuildPermissionsForm extends ConfirmFormBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'node_configure_rebuild_confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return $this->t('Are you sure you want to rebuild the permissions on site content?');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return new Url('system.status');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return $this->t('Rebuild permissions');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return $this->t('This action rebuilds all permissions on site content, and may be a lengthy process. This action cannot be undone.');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    node_access_rebuild(TRUE);
+    $form_state->setRedirectUrl($this->getCancelUrl());
+  }
+
+}

core/modules/node/src/NodeAccessControlHandler.php

@@ -0,0 +1,269 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Cache\RefinableCacheableDependencyInterface;
+use Drupal\Core\Entity\EntityHandlerInterface;
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Field\FieldDefinitionInterface;
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Entity\EntityAccessControlHandler;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Session\AccountInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Defines the access control handler for the node entity type.
+ *
+ * @see \Drupal\node\Entity\Node
+ * @ingroup node_access
+ */
+class NodeAccessControlHandler extends EntityAccessControlHandler implements NodeAccessControlHandlerInterface, EntityHandlerInterface {
+
+  /**
+   * The node grant storage.
+   *
+   * @var \Drupal\node\NodeGrantDatabaseStorageInterface
+   */
+  protected $grantStorage;
+
+  /**
+   * The entity type manager.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+   */
+  protected $entityTypeManager;
+
+  /**
+   * Map of revision operations.
+   *
+   * Keys contain revision operations, where values are an array containing the
+   * permission operation and entity operation.
+   *
+   * Permission operation is used to build the required permission, e.g.
+   * 'permissionOperation all revisions', 'permissionOperation type revisions'.
+   *
+   * Entity operation is used to determine access, e.g for 'delete revision'
+   * operation, an account must also have access to 'delete' operation on an
+   * entity.
+   */
+  protected const REVISION_OPERATION_MAP = [
+    'view all revisions' => ['view', 'view'],
+    'view revision' => ['view', 'view'],
+    'revert revision' => ['revert', 'update'],
+    'delete revision' => ['delete', 'delete'],
+  ];
+
+  /**
+   * Constructs a NodeAccessControlHandler object.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type definition.
+   * @param \Drupal\node\NodeGrantDatabaseStorageInterface $grant_storage
+   *   The node grant storage.
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   *   The entity type manager.
+   */
+  public function __construct(EntityTypeInterface $entity_type, NodeGrantDatabaseStorageInterface $grant_storage, EntityTypeManagerInterface $entity_type_manager) {
+    parent::__construct($entity_type);
+    $this->grantStorage = $grant_storage;
+    $this->entityTypeManager = $entity_type_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_type) {
+    return new static(
+      $entity_type,
+      $container->get('node.grant_storage'),
+      $container->get('entity_type.manager')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function access(EntityInterface $entity, $operation, ?AccountInterface $account = NULL, $return_as_object = FALSE) {
+    $account = $this->prepareUser($account);
+
+    // Only bypass if not a revision operation, to retain compatibility.
+    if ($account->hasPermission('bypass node access') && !isset(static::REVISION_OPERATION_MAP[$operation])) {
+      $result = AccessResult::allowed()->cachePerPermissions();
+      return $return_as_object ? $result : $result->isAllowed();
+    }
+    if (!$account->hasPermission('access content')) {
+      $result = AccessResult::forbidden("The 'access content' permission is required.")->cachePerPermissions();
+      return $return_as_object ? $result : $result->isAllowed();
+    }
+    $result = parent::access($entity, $operation, $account, TRUE)->cachePerPermissions();
+
+    return $return_as_object ? $result : $result->isAllowed();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function createAccess($entity_bundle = NULL, ?AccountInterface $account = NULL, array $context = [], $return_as_object = FALSE) {
+    $account = $this->prepareUser($account);
+
+    if ($account->hasPermission('bypass node access')) {
+      $result = AccessResult::allowed()->cachePerPermissions();
+      return $return_as_object ? $result : $result->isAllowed();
+    }
+    if (!$account->hasPermission('access content')) {
+      $result = AccessResult::forbidden("The 'access content' permission is required.")->cachePerPermissions();
+      return $return_as_object ? $result : $result->isAllowed();
+    }
+
+    $result = parent::createAccess($entity_bundle, $account, $context, TRUE)->cachePerPermissions();
+    return $return_as_object ? $result : $result->isAllowed();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkAccess(EntityInterface $node, $operation, AccountInterface $account) {
+    /** @var \Drupal\node\NodeInterface $node */
+
+    // Fetch information from the node object if possible.
+    $status = $node->isPublished();
+    $uid = $node->getOwnerId();
+
+    // Check if authors can view their own unpublished nodes.
+    if ($operation === 'view' && !$status && $account->hasPermission('view own unpublished content') && $account->isAuthenticated() && $account->id() == $uid) {
+      return AccessResult::allowed()->cachePerPermissions()->cachePerUser()->addCacheableDependency($node);
+    }
+
+    [$revision_permission_operation, $entity_operation] = static::REVISION_OPERATION_MAP[$operation] ?? [
+      NULL,
+      NULL,
+    ];
+
+    // Revision operations.
+    if ($revision_permission_operation) {
+      $bundle = $node->bundle();
+      // If user doesn't have any of these then quit.
+      if (!$account->hasPermission("$revision_permission_operation all revisions") && !$account->hasPermission("$revision_permission_operation $bundle revisions") && !$account->hasPermission('administer nodes')) {
+        return AccessResult::neutral()->cachePerPermissions();
+      }
+
+      // If the user has the view all revisions permission and this is the view
+      // all revisions operation then we can allow access.
+      if ($operation === 'view all revisions') {
+        return AccessResult::allowed()->cachePerPermissions();
+      }
+
+      // If this is the default revision, return access denied for revert or
+      // delete operations.
+      if ($node->isDefaultRevision() && ($operation === 'revert revision' || $operation === 'delete revision')) {
+        return AccessResult::forbidden()->addCacheableDependency($node);
+      }
+      elseif ($account->hasPermission('administer nodes')) {
+        return AccessResult::allowed()->cachePerPermissions();
+      }
+
+      // First check the access to the default revision and finally, if the
+      // node passed in is not the default revision then check access to
+      // that, too.
+      $node_storage = $this->entityTypeManager->getStorage($node->getEntityTypeId());
+      $access = $this->access($node_storage->load($node->id()), $entity_operation, $account, TRUE);
+      if (!$node->isDefaultRevision()) {
+        $access = $access->andIf($this->access($node, $entity_operation, $account, TRUE));
+      }
+      return $access->cachePerPermissions()->addCacheableDependency($node);
+    }
+
+    // Evaluate node grants.
+    $access_result = $this->grantStorage->access($node, $operation, $account);
+    if ($operation === 'view' && $access_result instanceof RefinableCacheableDependencyInterface) {
+      // Node variations can affect the access to the node. For instance, the
+      // access result cache varies on the node's published status. Only the
+      // 'view' node grant can currently be cached. The 'update' and 'delete'
+      // grants are already marked as uncacheable in the node grant storage.
+      // @see \Drupal\node\NodeGrantDatabaseStorage::access()
+      $access_result->addCacheableDependency($node);
+    }
+    return $access_result;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkCreateAccess(AccountInterface $account, array $context, $entity_bundle = NULL) {
+    return AccessResult::allowedIf($account->hasPermission('create ' . $entity_bundle . ' content'))->cachePerPermissions();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkFieldAccess($operation, FieldDefinitionInterface $field_definition, AccountInterface $account, ?FieldItemListInterface $items = NULL) {
+    // Only users with the administer nodes permission can edit administrative
+    // fields.
+    $administrative_fields = ['uid', 'status', 'created', 'promote', 'sticky'];
+    if ($operation == 'edit' && in_array($field_definition->getName(), $administrative_fields, TRUE)) {
+      return AccessResult::allowedIfHasPermission($account, 'administer nodes');
+    }
+
+    // No user can change read only fields.
+    $read_only_fields = ['revision_timestamp', 'revision_uid'];
+    if ($operation == 'edit' && in_array($field_definition->getName(), $read_only_fields, TRUE)) {
+      return AccessResult::forbidden();
+    }
+
+    // Users have access to the revision_log field either if they have
+    // administrative permissions or if the new revision option is enabled.
+    if ($operation == 'edit' && $field_definition->getName() == 'revision_log') {
+      if ($account->hasPermission('administer nodes')) {
+        return AccessResult::allowed()->cachePerPermissions();
+      }
+      return AccessResult::allowedIf($items->getEntity()->type->entity->shouldCreateNewRevision())->cachePerPermissions();
+    }
+    return parent::checkFieldAccess($operation, $field_definition, $account, $items);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function acquireGrants(NodeInterface $node) {
+    $grants = $this->moduleHandler->invokeAll('node_access_records', [$node]);
+    // Let modules alter the grants.
+    $this->moduleHandler->alter('node_access_records', $grants, $node);
+    // If no grants are set and the node is published, then use the default grant.
+    if (empty($grants) && $node->isPublished()) {
+      $grants[] = ['realm' => 'all', 'gid' => 0, 'grant_view' => 1, 'grant_update' => 0, 'grant_delete' => 0];
+    }
+    return $grants;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function writeDefaultGrant() {
+    $this->grantStorage->writeDefault();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function deleteGrants() {
+    $this->grantStorage->delete();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function countGrants() {
+    return $this->grantStorage->count();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function checkAllGrants(AccountInterface $account) {
+    return $this->grantStorage->checkAll($account);
+  }
+
+}

core/modules/node/src/NodeAccessControlHandlerInterface.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Node specific entity access control methods.
+ *
+ * @ingroup node_access
+ */
+interface NodeAccessControlHandlerInterface {
+
+  /**
+   * Gets the list of node access grants.
+   *
+   * This function is called to check the access grants for a node. It collects
+   * all node access grants for the node from hook_node_access_records()
+   * implementations, allows these grants to be altered via
+   * hook_node_access_records_alter() implementations, and returns the grants to
+   * the caller.
+   *
+   * @param \Drupal\node\NodeInterface $node
+   *   The $node to acquire grants for.
+   *
+   * @return array
+   *   The access rules for the node.
+   */
+  public function acquireGrants(NodeInterface $node);
+
+  /**
+   * Creates the default node access grant entry on the grant storage.
+   */
+  public function writeDefaultGrant();
+
+  /**
+   * Deletes all node access entries.
+   */
+  public function deleteGrants();
+
+  /**
+   * Counts available node grants.
+   *
+   * @return int
+   *   Returns the amount of node grants.
+   */
+  public function countGrants();
+
+  /**
+   * Checks all grants for a given account.
+   *
+   * @param \Drupal\Core\Session\AccountInterface $account
+   *   A user object representing the user for whom the operation is to be
+   *   performed.
+   *
+   * @return int
+   *   Status of the access check.
+   */
+  public function checkAllGrants(AccountInterface $account);
+
+}

core/modules/node/src/NodeForm.php

@@ -0,0 +1,316 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Component\Datetime\TimeInterface;
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Entity\ContentEntityForm;
+use Drupal\Core\Entity\EntityRepositoryInterface;
+use Drupal\Core\Entity\EntityTypeBundleInfoInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\TempStore\PrivateTempStoreFactory;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Form handler for the node edit forms.
+ *
+ * @internal
+ */
+class NodeForm extends ContentEntityForm {
+
+  /**
+   * The tempstore factory.
+   *
+   * @var \Drupal\Core\TempStore\PrivateTempStoreFactory
+   */
+  protected $tempStoreFactory;
+
+  /**
+   * The Current User object.
+   *
+   * @var \Drupal\Core\Session\AccountInterface
+   */
+  protected $currentUser;
+
+  /**
+   * The date formatter service.
+   *
+   * @var \Drupal\Core\Datetime\DateFormatterInterface
+   */
+  protected $dateFormatter;
+
+  /**
+   * Constructs a NodeForm object.
+   *
+   * @param \Drupal\Core\Entity\EntityRepositoryInterface $entity_repository
+   *   The entity repository.
+   * @param \Drupal\Core\TempStore\PrivateTempStoreFactory $temp_store_factory
+   *   The factory for the temp store object.
+   * @param \Drupal\Core\Entity\EntityTypeBundleInfoInterface $entity_type_bundle_info
+   *   The entity type bundle service.
+   * @param \Drupal\Component\Datetime\TimeInterface $time
+   *   The time service.
+   * @param \Drupal\Core\Session\AccountInterface $current_user
+   *   The current user.
+   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+   *   The date formatter service.
+   */
+  public function __construct(
+    EntityRepositoryInterface $entity_repository,
+    PrivateTempStoreFactory $temp_store_factory,
+    EntityTypeBundleInfoInterface $entity_type_bundle_info,
+    TimeInterface $time,
+    AccountInterface $current_user,
+    DateFormatterInterface $date_formatter,
+  ) {
+    parent::__construct($entity_repository, $entity_type_bundle_info, $time);
+    $this->tempStoreFactory = $temp_store_factory;
+    $this->currentUser = $current_user;
+    $this->dateFormatter = $date_formatter;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity.repository'),
+      $container->get('tempstore.private'),
+      $container->get('entity_type.bundle.info'),
+      $container->get('datetime.time'),
+      $container->get('current_user'),
+      $container->get('date.formatter')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function form(array $form, FormStateInterface $form_state) {
+    // Try to restore from temp store, this must be done before calling
+    // parent::form().
+    $store = $this->tempStoreFactory->get('node_preview');
+
+    // Attempt to load from preview when the uuid is present unless we are
+    // rebuilding the form.
+    $request_uuid = \Drupal::request()->query->get('uuid');
+    if (!$form_state->isRebuilding() && $request_uuid && $preview = $store->get($request_uuid)) {
+      /** @var \Drupal\Core\Form\FormStateInterface $preview */
+
+      $form_state->setStorage($preview->getStorage());
+      $form_state->setUserInput($preview->getUserInput());
+
+      // Rebuild the form.
+      $form_state->setRebuild();
+
+      // The combination of having user input and rebuilding the form means
+      // that it will attempt to cache the form state which will fail if it is
+      // a GET request.
+      $form_state->setRequestMethod('POST');
+
+      $this->entity = $preview->getFormObject()->getEntity();
+      $this->entity->in_preview = NULL;
+
+      $form_state->set('has_been_previewed', TRUE);
+    }
+
+    /** @var \Drupal\node\NodeInterface $node */
+    $node = $this->entity;
+
+    if ($this->operation == 'edit') {
+      $form['#title'] = $this->t('<em>Edit @type</em> @title', [
+        '@type' => node_get_type_label($node),
+        '@title' => $node->label(),
+      ]);
+    }
+
+    // Changed must be sent to the client, for later overwrite error checking.
+    $form['changed'] = [
+      '#type' => 'hidden',
+      '#default_value' => $node->getChangedTime(),
+    ];
+
+    $form = parent::form($form, $form_state);
+
+    $form['advanced']['#attributes']['class'][] = 'entity-meta';
+
+    $form['meta'] = [
+      '#type' => 'details',
+      '#group' => 'advanced',
+      '#weight' => -10,
+      '#title' => $this->t('Status'),
+      '#attributes' => ['class' => ['entity-meta__header']],
+      '#tree' => TRUE,
+      '#access' => $this->currentUser->hasPermission('administer nodes'),
+    ];
+    $form['meta']['published'] = [
+      '#type' => 'item',
+      '#markup' => $node->isPublished() ? $this->t('Published') : $this->t('Not published'),
+      '#access' => !$node->isNew(),
+      '#wrapper_attributes' => ['class' => ['entity-meta__title']],
+    ];
+    $form['meta']['changed'] = [
+      '#type' => 'item',
+      '#title' => $this->t('Last saved'),
+      '#markup' => !$node->isNew() ? $this->dateFormatter->format($node->getChangedTime(), 'short') : $this->t('Not saved yet'),
+      '#wrapper_attributes' => ['class' => ['entity-meta__last-saved']],
+    ];
+    $form['meta']['author'] = [
+      '#type' => 'item',
+      '#title' => $this->t('Author'),
+      '#markup' => $node->getOwner()->getAccountName(),
+      '#wrapper_attributes' => ['class' => ['entity-meta__author']],
+    ];
+
+    $form['status']['#group'] = 'footer';
+
+    // Node author information for administrators.
+    $form['author'] = [
+      '#type' => 'details',
+      '#title' => $this->t('Authoring information'),
+      '#group' => 'advanced',
+      '#attributes' => [
+        'class' => ['node-form-author'],
+      ],
+      '#attached' => [
+        'library' => ['node/drupal.node'],
+      ],
+      '#weight' => 90,
+      '#optional' => TRUE,
+    ];
+
+    if (isset($form['uid'])) {
+      $form['uid']['#group'] = 'author';
+    }
+
+    if (isset($form['created'])) {
+      $form['created']['#group'] = 'author';
+    }
+
+    // Node options for administrators.
+    $form['options'] = [
+      '#type' => 'details',
+      '#title' => $this->t('Promotion options'),
+      '#group' => 'advanced',
+      '#attributes' => [
+        'class' => ['node-form-options'],
+      ],
+      '#attached' => [
+        'library' => ['node/drupal.node'],
+      ],
+      '#weight' => 95,
+      '#optional' => TRUE,
+    ];
+
+    if (isset($form['promote'])) {
+      $form['promote']['#group'] = 'options';
+    }
+
+    if (isset($form['sticky'])) {
+      $form['sticky']['#group'] = 'options';
+    }
+
+    $form['#attached']['library'][] = 'node/form';
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function actions(array $form, FormStateInterface $form_state) {
+    $element = parent::actions($form, $form_state);
+    $node = $this->entity;
+    $preview_mode = $node->type->entity->getPreviewMode();
+
+    $element['submit']['#access'] = $preview_mode != DRUPAL_REQUIRED || $form_state->get('has_been_previewed');
+
+    $element['preview'] = [
+      '#type' => 'submit',
+      '#access' => $preview_mode != DRUPAL_DISABLED && ($node->access('create') || $node->access('update')),
+      '#value' => $this->t('Preview'),
+      '#weight' => 20,
+      '#submit' => ['::submitForm', '::preview'],
+    ];
+
+    if (array_key_exists('delete', $element)) {
+      $element['delete']['#weight'] = 100;
+    }
+
+    return $element;
+  }
+
+  /**
+   * Form submission handler for the 'preview' action.
+   *
+   * @param $form
+   *   An associative array containing the structure of the form.
+   * @param $form_state
+   *   The current state of the form.
+   */
+  public function preview(array $form, FormStateInterface $form_state) {
+    $store = $this->tempStoreFactory->get('node_preview');
+    $this->entity->in_preview = TRUE;
+    $store->set($this->entity->uuid(), $form_state);
+
+    $route_parameters = [
+      'node_preview' => $this->entity->uuid(),
+      'view_mode_id' => 'full',
+    ];
+
+    $options = [];
+    $query = $this->getRequest()->query;
+    if ($query->has('destination')) {
+      $options['query']['destination'] = $query->get('destination');
+      $query->remove('destination');
+    }
+    $form_state->setRedirect('entity.node.preview', $route_parameters, $options);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function save(array $form, FormStateInterface $form_state) {
+    $node = $this->entity;
+    $insert = $node->isNew();
+    $node->save();
+    $node_link = $node->toLink($this->t('View'))->toString();
+    $context = ['@type' => $node->getType(), '%title' => $node->label(), 'link' => $node_link];
+    $t_args = ['@type' => node_get_type_label($node), '%title' => $node->toLink()->toString()];
+
+    if ($insert) {
+      $this->logger('content')->info('@type: added %title.', $context);
+      $this->messenger()->addStatus($this->t('@type %title has been created.', $t_args));
+    }
+    else {
+      $this->logger('content')->info('@type: updated %title.', $context);
+      $this->messenger()->addStatus($this->t('@type %title has been updated.', $t_args));
+    }
+
+    if ($node->id()) {
+      $form_state->setValue('nid', $node->id());
+      $form_state->set('nid', $node->id());
+      if ($node->access('view')) {
+        $form_state->setRedirect(
+          'entity.node.canonical',
+          ['node' => $node->id()]
+        );
+      }
+      else {
+        $form_state->setRedirect('<front>');
+      }
+
+      // Remove the preview entry from the temp store, if any.
+      $store = $this->tempStoreFactory->get('node_preview');
+      $store->delete($node->uuid());
+    }
+    else {
+      // In the unlikely case something went wrong on save, the node will be
+      // rebuilt and node form redisplayed the same way as in preview.
+      $this->messenger()->addError($this->t('The post could not be saved.'));
+      $form_state->setRebuild();
+    }
+  }
+
+}

core/modules/node/src/NodeGrantDatabaseStorage.php

@@ -0,0 +1,330 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Database\Connection;
+use Drupal\Core\Database\Query\SelectInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Defines a storage handler class that handles the node grants system.
+ *
+ * This is used to build node query access.
+ *
+ * @ingroup node_access
+ */
+class NodeGrantDatabaseStorage implements NodeGrantDatabaseStorageInterface {
+
+  /**
+   * The database connection.
+   *
+   * @var \Drupal\Core\Database\Connection
+   */
+  protected $database;
+
+  /**
+   * The module handler.
+   *
+   * @var \Drupal\Core\Extension\ModuleHandlerInterface
+   */
+  protected $moduleHandler;
+
+  /**
+   * The language manager.
+   *
+   * @var \Drupal\Core\Language\LanguageManagerInterface
+   */
+  protected $languageManager;
+
+  /**
+   * Constructs a NodeGrantDatabaseStorage object.
+   *
+   * @param \Drupal\Core\Database\Connection $database
+   *   The database connection.
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   The module handler.
+   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+   *   The language manager.
+   */
+  public function __construct(Connection $database, ModuleHandlerInterface $module_handler, LanguageManagerInterface $language_manager) {
+    $this->database = $database;
+    $this->moduleHandler = $module_handler;
+    $this->languageManager = $language_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function access(NodeInterface $node, $operation, AccountInterface $account) {
+    // Grants only support these operations.
+    if (!in_array($operation, ['view', 'update', 'delete'])) {
+      return AccessResult::neutral();
+    }
+
+    // If no module implements the hook or the node does not have an id there is
+    // no point in querying the database for access grants.
+    if (!$this->moduleHandler->hasImplementations('node_grants') || !$node->id()) {
+      // Return the equivalent of the default grant, defined by
+      // self::writeDefault().
+      if ($operation === 'view') {
+        return AccessResult::allowedIf($node->isPublished());
+      }
+      else {
+        return AccessResult::neutral();
+      }
+    }
+
+    // Check the database for potential access grants.
+    $query = $this->database->select('node_access');
+    $query->addExpression('1');
+    // Only interested for granting in the current operation.
+    $query->condition('grant_' . $operation, 1, '>=');
+    // Check for grants for this node and the correct langcode. New translations
+    // do not yet have a langcode and must check the fallback node record.
+    $nids = $query->andConditionGroup()
+      ->condition('nid', $node->id());
+    if (!$node->isNewTranslation()) {
+      $nids->condition('langcode', $node->language()->getId());
+    }
+    else {
+      $nids->condition('fallback', 1);
+    }
+    // If the node is published, also take the default grant into account. The
+    // default is saved with a node ID of 0.
+    $status = $node->isPublished();
+    if ($status) {
+      $nids = $query->orConditionGroup()
+        ->condition($nids)
+        ->condition('nid', 0);
+    }
+    $query->condition($nids);
+    $query->range(0, 1);
+
+    $grants = $this->buildGrantsQueryCondition(node_access_grants($operation, $account));
+
+    if (count($grants) > 0) {
+      $query->condition($grants);
+    }
+
+    // Only the 'view' node grant can currently be cached; the others currently
+    // don't have any cacheability metadata. Hopefully, we can add that in the
+    // future, which would allow this access check result to be cacheable in all
+    // cases. For now, this must remain marked as uncacheable, even when it is
+    // theoretically cacheable, because we don't have the necessary metadata to
+    // know it for a fact.
+    $set_cacheability = function (AccessResult $access_result) use ($operation) {
+      $access_result->addCacheContexts(['user.node_grants:' . $operation]);
+      if ($operation !== 'view') {
+        $access_result->setCacheMaxAge(0);
+      }
+      return $access_result;
+    };
+
+    if ($query->execute()->fetchField()) {
+      return $set_cacheability(AccessResult::allowed());
+    }
+    else {
+      return $set_cacheability(AccessResult::neutral());
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function checkAll(AccountInterface $account) {
+    $query = $this->database->select('node_access');
+    $query->addExpression('COUNT(*)');
+    $query
+      ->condition('nid', 0)
+      ->condition('grant_view', 1, '>=');
+
+    $grants = $this->buildGrantsQueryCondition(node_access_grants('view', $account));
+
+    if (count($grants) > 0) {
+      $query->condition($grants);
+    }
+    return $query->execute()->fetchField();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function alterQuery($query, array $tables, $operation, AccountInterface $account, $base_table) {
+    if (!$langcode = $query->getMetaData('langcode')) {
+      $langcode = FALSE;
+    }
+
+    // Find all instances of the base table being joined which could appear
+    // more than once in the query, and could be aliased. Join each one to
+    // the node_access table.
+    $grants = node_access_grants($operation, $account);
+    // If any grant exists for the specified user, then user has access to the
+    // node for the specified operation.
+    $grant_conditions = $this->buildGrantsQueryCondition($grants);
+    $grants_exist = count($grant_conditions->conditions()) > 0;
+
+    $is_multilingual = \Drupal::languageManager()->isMultilingual();
+    foreach ($tables as $table_alias => $tableinfo) {
+      $table = $tableinfo['table'];
+      if (!($table instanceof SelectInterface) && $table == $base_table) {
+        // Set the subquery.
+        $subquery = $this->database->select('node_access', 'na')
+          ->fields('na', ['nid']);
+
+        // Attach conditions to the sub-query for nodes.
+        if ($grants_exist) {
+          $subquery->condition($grant_conditions);
+        }
+        $subquery->condition('na.grant_' . $operation, 1, '>=');
+
+        // Add langcode-based filtering if this is a multilingual site.
+        if ($is_multilingual) {
+          // If no specific langcode to check for is given, use the grant entry
+          // which is set as a fallback.
+          // If a specific langcode is given, use the grant entry for it.
+          if ($langcode === FALSE) {
+            $subquery->condition('na.fallback', 1, '=');
+          }
+          else {
+            $subquery->condition('na.langcode', $langcode, '=');
+          }
+        }
+
+        $field = 'nid';
+        // Now handle entities.
+        $subquery->where("[$table_alias].[$field] = [na].[nid]");
+
+        if (empty($tableinfo['join type'])) {
+          $query->exists($subquery);
+        }
+        else {
+          // If this is a join, add the node access check to the join condition.
+          // This requires using $query->getTables() to alter the table
+          // information.
+          $join_cond = $query
+            ->andConditionGroup()
+            ->exists($subquery);
+          $join_cond->where($tableinfo['condition'], $query->getTables()[$table_alias]['arguments']);
+          $query->getTables()[$table_alias]['arguments'] = [];
+          $query->getTables()[$table_alias]['condition'] = $join_cond;
+        }
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function write(NodeInterface $node, array $grants, $realm = NULL, $delete = TRUE) {
+    if ($delete) {
+      $query = $this->database->delete('node_access')->condition('nid', $node->id());
+      if ($realm) {
+        $query->condition('realm', [$realm, 'all'], 'IN');
+      }
+      $query->execute();
+    }
+    // Only perform work when node_access modules are active.
+    if (!empty($grants) && $this->moduleHandler->hasImplementations('node_grants')) {
+      $query = $this->database->insert('node_access')->fields(['nid', 'langcode', 'fallback', 'realm', 'gid', 'grant_view', 'grant_update', 'grant_delete']);
+      // If we have defined a granted langcode, use it. But if not, add a grant
+      // for every language this node is translated to.
+      $fallback_langcode = $node->getUntranslated()->language()->getId();
+      foreach ($grants as $grant) {
+        if ($realm && $realm != $grant['realm']) {
+          continue;
+        }
+        if (isset($grant['langcode'])) {
+          $grant_languages = [$grant['langcode'] => $this->languageManager->getLanguage($grant['langcode'])];
+        }
+        else {
+          $grant_languages = $node->getTranslationLanguages(TRUE);
+        }
+        foreach ($grant_languages as $grant_langcode => $grant_language) {
+          // Only write grants; denies are implicit.
+          if ($grant['grant_view'] || $grant['grant_update'] || $grant['grant_delete']) {
+            $grant['nid'] = $node->id();
+            $grant['langcode'] = $grant_langcode;
+            // The record with the original langcode is used as the fallback.
+            if ($grant['langcode'] == $fallback_langcode) {
+              $grant['fallback'] = 1;
+            }
+            else {
+              $grant['fallback'] = 0;
+            }
+            $query->values($grant);
+          }
+        }
+      }
+      $query->execute();
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function delete() {
+    $this->database->truncate('node_access')->execute();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function writeDefault() {
+    $this->database->insert('node_access')
+      ->fields([
+        'nid' => 0,
+        'realm' => 'all',
+        'gid' => 0,
+        'grant_view' => 1,
+        'grant_update' => 0,
+        'grant_delete' => 0,
+      ])
+      ->execute();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function count() {
+    return $this->database->query('SELECT COUNT(*) FROM {node_access}')->fetchField();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function deleteNodeRecords(array $nids) {
+    $this->database->delete('node_access')
+      ->condition('nid', $nids, 'IN')
+      ->execute();
+  }
+
+  /**
+   * Creates a query condition from an array of node access grants.
+   *
+   * @param array $node_access_grants
+   *   An array of grants, as returned by node_access_grants().
+   *
+   * @return \Drupal\Core\Database\Query\Condition
+   *   A condition object to be passed to $query->condition().
+   *
+   * @see node_access_grants()
+   */
+  protected function buildGrantsQueryCondition(array $node_access_grants) {
+    $grants = $this->database->condition('OR');
+    foreach ($node_access_grants as $realm => $gids) {
+      if (!empty($gids)) {
+        $and = $this->database->condition('AND');
+        $grants->condition($and
+          ->condition('gid', $gids, 'IN')
+          ->condition('realm', $realm)
+        );
+      }
+    }
+
+    return $grants;
+  }
+
+}

core/modules/node/src/NodeGrantDatabaseStorageInterface.php

@@ -0,0 +1,127 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Provides an interface for node access grant storage.
+ *
+ * @ingroup node_access
+ */
+interface NodeGrantDatabaseStorageInterface {
+
+  /**
+   * Checks all grants for a given account.
+   *
+   * @param \Drupal\Core\Session\AccountInterface $account
+   *   A user object representing the user for whom the operation is to be
+   *   performed.
+   *
+   * @return int
+   *   Status of the access check.
+   */
+  public function checkAll(AccountInterface $account);
+
+  /**
+   * Alters a query when node access is required.
+   *
+   * @param mixed $query
+   *   Query that is being altered.
+   * @param array $tables
+   *   A list of tables that need to be part of the alter.
+   * @param string $operation
+   *   The operation to be performed on the node. Possible values are:
+   *   - "view"
+   *   - "update"
+   *   - "delete"
+   *   - "create"
+   * @param \Drupal\Core\Session\AccountInterface $account
+   *   A user object representing the user for whom the operation is to be
+   *   performed.
+   * @param string $base_table
+   *   The base table of the query.
+   *
+   * @return int
+   *   Status of the access check.
+   */
+  public function alterQuery($query, array $tables, $operation, AccountInterface $account, $base_table);
+
+  /**
+   * Writes a list of grants to the database, deleting previously saved ones.
+   *
+   * If a realm is provided, it will only delete grants from that realm, but
+   * it will always delete a grant from the 'all' realm. Modules that use
+   * node access can use this method when doing mass updates due to widespread
+   * permission changes.
+   *
+   * Note: Don't call this method directly from a contributed module. Call
+   * \Drupal\node\NodeAccessControlHandlerInterface::acquireGrants() instead.
+   *
+   * @param \Drupal\node\NodeInterface $node
+   *   The node whose grants are being written.
+   * @param array $grants
+   *   A list of grants to write. Each grant is an array that must contain the
+   *   following keys: realm, gid, grant_view, grant_update, grant_delete.
+   *   The realm is specified by a particular module; the gid is as well, and
+   *   is a module-defined id to define grant privileges. each grant_* field
+   *   is a boolean value.
+   * @param string $realm
+   *   (optional) If provided, read/write grants for that realm only. Defaults to
+   *   NULL.
+   * @param bool $delete
+   *   (optional) If false, does not delete records. This is only for optimization
+   *   purposes, and assumes the caller has already performed a mass delete of
+   *   some form. Defaults to TRUE.
+   */
+  public function write(NodeInterface $node, array $grants, $realm = NULL, $delete = TRUE);
+
+  /**
+   * Deletes all node access entries.
+   */
+  public function delete();
+
+  /**
+   * Creates the default node access grant entry.
+   */
+  public function writeDefault();
+
+  /**
+   * Determines access to nodes based on node grants.
+   *
+   * @param \Drupal\node\NodeInterface $node
+   *   The entity for which to check 'create' access.
+   * @param string $operation
+   *   The entity operation. Usually one of 'view', 'edit', 'create' or
+   *   'delete'.
+   * @param \Drupal\Core\Session\AccountInterface $account
+   *   The user for which to check access.
+   *
+   * @return \Drupal\Core\Access\AccessResultInterface
+   *   The access result, either allowed or neutral. If there are no node
+   *   grants, the default grant defined by writeDefault() is applied.
+   *
+   * @see hook_node_grants()
+   * @see hook_node_access_records()
+   * @see \Drupal\node\NodeGrantDatabaseStorageInterface::writeDefault()
+   */
+  public function access(NodeInterface $node, $operation, AccountInterface $account);
+
+  /**
+   * Counts available node grants.
+   *
+   * @return int
+   *   Returns the amount of node grants.
+   */
+  public function count();
+
+  /**
+   * Remove the access records belonging to certain nodes.
+   *
+   * @param array $nids
+   *   A list of node IDs. The grant records belonging to these nodes will be
+   *   deleted.
+   */
+  public function deleteNodeRecords(array $nids);
+
+}

core/modules/node/src/NodeInterface.php

@@ -0,0 +1,150 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Entity\EntityPublishedInterface;
+use Drupal\Core\Entity\RevisionLogInterface;
+use Drupal\user\EntityOwnerInterface;
+use Drupal\Core\Entity\EntityChangedInterface;
+use Drupal\Core\Entity\ContentEntityInterface;
+
+/**
+ * Provides an interface defining a node entity.
+ */
+interface NodeInterface extends ContentEntityInterface, EntityChangedInterface, EntityOwnerInterface, RevisionLogInterface, EntityPublishedInterface {
+
+  /**
+   * Denotes that the node is not published.
+   */
+  const NOT_PUBLISHED = 0;
+
+  /**
+   * Denotes that the node is published.
+   */
+  const PUBLISHED = 1;
+
+  /**
+   * Denotes that the node is not promoted to the front page.
+   */
+  const NOT_PROMOTED = 0;
+
+  /**
+   * Denotes that the node is promoted to the front page.
+   */
+  const PROMOTED = 1;
+
+  /**
+   * Denotes that the node is not sticky at the top of the page.
+   */
+  const NOT_STICKY = 0;
+
+  /**
+   * Denotes that the node is sticky at the top of the page.
+   */
+  const STICKY = 1;
+
+  /**
+   * Gets the node type.
+   *
+   * @return string
+   *   The node type.
+   */
+  public function getType();
+
+  /**
+   * Gets the node title.
+   *
+   * @return string|null
+   *   Title of the node, or NULL if the node doesn't yet have a title (for
+   *   example, if a new node is being previewed).
+   */
+  public function getTitle();
+
+  /**
+   * Sets the node title.
+   *
+   * @param string $title
+   *   The node title.
+   *
+   * @return $this
+   *   The called node entity.
+   */
+  public function setTitle($title);
+
+  /**
+   * Gets the node creation timestamp.
+   *
+   * @return int
+   *   Creation timestamp of the node.
+   */
+  public function getCreatedTime();
+
+  /**
+   * Sets the node creation timestamp.
+   *
+   * @param int $timestamp
+   *   The node creation timestamp.
+   *
+   * @return $this
+   *   The called node entity.
+   */
+  public function setCreatedTime($timestamp);
+
+  /**
+   * Returns the node promotion status.
+   *
+   * @return bool
+   *   TRUE if the node is promoted.
+   */
+  public function isPromoted();
+
+  /**
+   * Sets the node promoted status.
+   *
+   * @param bool $promoted
+   *   TRUE to set this node to promoted, FALSE to set it to not promoted.
+   *
+   * @return $this
+   *   The called node entity.
+   */
+  public function setPromoted($promoted);
+
+  /**
+   * Returns the node sticky status.
+   *
+   * @return bool
+   *   TRUE if the node is sticky.
+   */
+  public function isSticky();
+
+  /**
+   * Sets the node sticky status.
+   *
+   * @param bool $sticky
+   *   TRUE to set this node to sticky, FALSE to set it to not sticky.
+   *
+   * @return $this
+   *   The called node entity.
+   */
+  public function setSticky($sticky);
+
+  /**
+   * Gets the node revision creation timestamp.
+   *
+   * @return int
+   *   The UNIX timestamp of when this revision was created.
+   */
+  public function getRevisionCreationTime();
+
+  /**
+   * Sets the node revision creation timestamp.
+   *
+   * @param int $timestamp
+   *   The UNIX timestamp of when this revision was created.
+   *
+   * @return $this
+   *   The called node entity.
+   */
+  public function setRevisionCreationTime($timestamp);
+
+}

core/modules/node/src/NodeListBuilder.php

@@ -0,0 +1,118 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityListBuilder;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Routing\RedirectDestinationInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Defines a class to build a listing of node entities.
+ *
+ * @see \Drupal\node\Entity\Node
+ */
+class NodeListBuilder extends EntityListBuilder {
+
+  /**
+   * The date formatter service.
+   *
+   * @var \Drupal\Core\Datetime\DateFormatterInterface
+   */
+  protected $dateFormatter;
+
+  /**
+   * Constructs a new NodeListBuilder object.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type definition.
+   * @param \Drupal\Core\Entity\EntityStorageInterface $storage
+   *   The entity storage class.
+   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+   *   The date formatter service.
+   * @param \Drupal\Core\Routing\RedirectDestinationInterface $redirect_destination
+   *   The redirect destination service.
+   */
+  public function __construct(EntityTypeInterface $entity_type, EntityStorageInterface $storage, DateFormatterInterface $date_formatter, RedirectDestinationInterface $redirect_destination) {
+    parent::__construct($entity_type, $storage);
+
+    $this->dateFormatter = $date_formatter;
+    $this->redirectDestination = $redirect_destination;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_type) {
+    return new static(
+      $entity_type,
+      $container->get('entity_type.manager')->getStorage($entity_type->id()),
+      $container->get('date.formatter'),
+      $container->get('redirect.destination')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildHeader() {
+    // Enable language column and filter if multiple languages are added.
+    $header = [
+      'title' => $this->t('Title'),
+      'type' => [
+        'data' => $this->t('Content type'),
+        'class' => [RESPONSIVE_PRIORITY_MEDIUM],
+      ],
+      'author' => [
+        'data' => $this->t('Author'),
+        'class' => [RESPONSIVE_PRIORITY_LOW],
+      ],
+      'status' => $this->t('Status'),
+      'changed' => [
+        'data' => $this->t('Updated'),
+        'class' => [RESPONSIVE_PRIORITY_LOW],
+      ],
+    ];
+    if (\Drupal::languageManager()->isMultilingual()) {
+      $header['language_name'] = [
+        'data' => $this->t('Language'),
+        'class' => [RESPONSIVE_PRIORITY_LOW],
+      ];
+    }
+    return $header + parent::buildHeader();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildRow(EntityInterface $entity) {
+    /** @var \Drupal\node\NodeInterface $entity */
+    $mark = [
+      '#theme' => 'mark',
+      '#mark_type' => node_mark($entity->id(), $entity->getChangedTime()),
+    ];
+    $row['title']['data'] = [
+      '#type' => 'link',
+      '#title' => $entity->label(),
+      '#suffix' => ' ' . \Drupal::service('renderer')->render($mark),
+      '#url' => $entity->toUrl(),
+    ];
+    $row['type'] = node_get_type_label($entity);
+    $row['author']['data'] = [
+      '#theme' => 'username',
+      '#account' => $entity->getOwner(),
+    ];
+    $row['status'] = $entity->isPublished() ? $this->t('published') : $this->t('not published');
+    $row['changed'] = $this->dateFormatter->format($entity->getChangedTime(), 'short');
+    $language_manager = \Drupal::languageManager();
+    if ($language_manager->isMultilingual()) {
+      $row['language_name'] = $language_manager->getLanguageName($entity->language()->getId());
+    }
+    $row['operations']['data'] = $this->buildOperations($entity);
+    return $row + parent::buildRow($entity);
+  }
+
+}

core/modules/node/src/NodePermissions.php

@@ -0,0 +1,73 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Entity\BundlePermissionHandlerTrait;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\node\Entity\NodeType;
+
+/**
+ * Provides dynamic permissions for nodes of different types.
+ */
+class NodePermissions {
+  use BundlePermissionHandlerTrait;
+  use StringTranslationTrait;
+
+  /**
+   * Returns an array of node type permissions.
+   *
+   * @return array
+   *   The node type permissions.
+   *   @see \Drupal\user\PermissionHandlerInterface::getPermissions()
+   */
+  public function nodeTypePermissions() {
+    return $this->generatePermissions(NodeType::loadMultiple(), [$this, 'buildPermissions']);
+  }
+
+  /**
+   * Returns a list of node permissions for a given node type.
+   *
+   * @param \Drupal\node\Entity\NodeType $type
+   *   The node type.
+   *
+   * @return array
+   *   An associative array of permission names and descriptions.
+   */
+  protected function buildPermissions(NodeType $type) {
+    $type_id = $type->id();
+    $type_params = ['%type_name' => $type->label()];
+
+    return [
+      "create $type_id content" => [
+        'title' => $this->t('%type_name: Create new content', $type_params),
+      ],
+      "edit own $type_id content" => [
+        'title' => $this->t('%type_name: Edit own content', $type_params),
+        'description' => $this->t('Note that anonymous users with this permission are able to edit any content created by any anonymous user.'),
+      ],
+      "edit any $type_id content" => [
+        'title' => $this->t('%type_name: Edit any content', $type_params),
+      ],
+      "delete own $type_id content" => [
+        'title' => $this->t('%type_name: Delete own content', $type_params),
+        'description' => $this->t('Note that anonymous users with this permission are able to delete any content created by any anonymous user.'),
+      ],
+      "delete any $type_id content" => [
+        'title' => $this->t('%type_name: Delete any content', $type_params),
+      ],
+      "view $type_id revisions" => [
+        'title' => $this->t('%type_name: View revisions', $type_params),
+        'description' => t('To view a revision, you also need permission to view the content item.'),
+      ],
+      "revert $type_id revisions" => [
+        'title' => $this->t('%type_name: Revert revisions', $type_params),
+        'description' => t('To revert a revision, you also need permission to edit the content item.'),
+      ],
+      "delete $type_id revisions" => [
+        'title' => $this->t('%type_name: Delete revisions', $type_params),
+        'description' => $this->t('To delete a revision, you also need permission to delete the content item.'),
+      ],
+    ];
+  }
+
+}

core/modules/node/src/NodeServiceProvider.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\DependencyInjection\ContainerBuilder;
+use Drupal\Core\DependencyInjection\ServiceProviderInterface;
+use Drupal\node\EventSubscriber\NodeTranslationExceptionSubscriber;
+use Drupal\node\EventSubscriber\NodeTranslationMigrateSubscriber;
+use Symfony\Component\DependencyInjection\Reference;
+
+/**
+ * Registers services in the container.
+ */
+class NodeServiceProvider implements ServiceProviderInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function register(ContainerBuilder $container) {
+    // Register the node.node_translation_migrate service in the container if
+    // the migrate and language modules are enabled.
+    $modules = $container->getParameter('container.modules');
+    if (isset($modules['migrate']) && isset($modules['language'])) {
+      $container->register('node.node_translation_migrate', NodeTranslationMigrateSubscriber::class)
+        ->addTag('event_subscriber')
+        ->addArgument(new Reference('keyvalue'))
+        ->addArgument(new Reference('state'));
+    }
+
+    // Register the node.node_translation_exception service in the container if
+    // the language module is enabled.
+    if (isset($modules['language'])) {
+      $container->register('node.node_translation_exception', NodeTranslationExceptionSubscriber::class)
+        ->addTag('event_subscriber')
+        ->addArgument(new Reference('keyvalue'))
+        ->addArgument(new Reference('language_manager'))
+        ->addArgument(new Reference('url_generator'))
+        ->addArgument(new Reference('state'));
+    }
+  }
+
+}

core/modules/node/src/NodeStorage.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Entity\Sql\SqlContentEntityStorage;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Language\LanguageInterface;
+
+/**
+ * Defines the storage handler class for nodes.
+ *
+ * This extends the base storage class, adding required special handling for
+ * node entities.
+ */
+class NodeStorage extends SqlContentEntityStorage implements NodeStorageInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function revisionIds(NodeInterface $node) {
+    return $this->database->query(
+      'SELECT [vid] FROM {' . $this->getRevisionTable() . '} WHERE [nid] = :nid ORDER BY [vid]',
+      [':nid' => $node->id()]
+    )->fetchCol();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function userRevisionIds(AccountInterface $account) {
+    return $this->database->query(
+      'SELECT [vid] FROM {' . $this->getRevisionDataTable() . '} WHERE [uid] = :uid ORDER BY [vid]',
+      [':uid' => $account->id()]
+    )->fetchCol();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function countDefaultLanguageRevisions(NodeInterface $node) {
+    return $this->database->query('SELECT COUNT(*) FROM {' . $this->getRevisionDataTable() . '} WHERE [nid] = :nid AND [default_langcode] = 1', [':nid' => $node->id()])->fetchField();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function updateType($old_type, $new_type) {
+    return $this->database->update($this->getBaseTable())
+      ->fields(['type' => $new_type])
+      ->condition('type', $old_type)
+      ->execute();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function clearRevisionsLanguage(LanguageInterface $language) {
+    return $this->database->update($this->getRevisionTable())
+      ->fields(['langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED])
+      ->condition('langcode', $language->getId())
+      ->execute();
+  }
+
+}

core/modules/node/src/NodeStorageInterface.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Entity\ContentEntityStorageInterface;
+use Drupal\Core\Language\LanguageInterface;
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Defines an interface for node entity storage classes.
+ */
+interface NodeStorageInterface extends ContentEntityStorageInterface {
+
+  /**
+   * Gets a list of node revision IDs for a specific node.
+   *
+   * @param \Drupal\node\NodeInterface $node
+   *   The node entity.
+   *
+   * @return int[]
+   *   Node revision IDs (in ascending order).
+   */
+  public function revisionIds(NodeInterface $node);
+
+  /**
+   * Gets a list of revision IDs having a given user as node author.
+   *
+   * @param \Drupal\Core\Session\AccountInterface $account
+   *   The user entity.
+   *
+   * @return int[]
+   *   Node revision IDs (in ascending order).
+   */
+  public function userRevisionIds(AccountInterface $account);
+
+  /**
+   * Counts the number of revisions in the default language.
+   *
+   * @param \Drupal\node\NodeInterface $node
+   *   The node entity.
+   *
+   * @return int
+   *   The number of revisions in the default language.
+   */
+  public function countDefaultLanguageRevisions(NodeInterface $node);
+
+  /**
+   * Updates all nodes of one type to be of another type.
+   *
+   * @param string $old_type
+   *   The current node type of the nodes.
+   * @param string $new_type
+   *   The new node type of the nodes.
+   *
+   * @return int
+   *   The number of nodes whose node type field was modified.
+   */
+  public function updateType($old_type, $new_type);
+
+  /**
+   * Unsets the language for all nodes with the given language.
+   *
+   * @param \Drupal\Core\Language\LanguageInterface $language
+   *   The language object.
+   */
+  public function clearRevisionsLanguage(LanguageInterface $language);
+
+}

core/modules/node/src/NodeStorageSchema.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Entity\ContentEntityTypeInterface;
+use Drupal\Core\Entity\Sql\SqlContentEntityStorageSchema;
+use Drupal\Core\Field\FieldStorageDefinitionInterface;
+
+/**
+ * Defines the node schema handler.
+ */
+class NodeStorageSchema extends SqlContentEntityStorageSchema {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEntitySchema(ContentEntityTypeInterface $entity_type, $reset = FALSE) {
+    $schema = parent::getEntitySchema($entity_type, $reset);
+
+    if ($data_table = $this->storage->getDataTable()) {
+      $schema[$data_table]['indexes'] += [
+        'node__frontpage' => ['promote', 'status', 'sticky', 'created'],
+        'node__title_type' => ['title', ['type', 4]],
+      ];
+    }
+
+    return $schema;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getSharedTableFieldSchema(FieldStorageDefinitionInterface $storage_definition, $table_name, array $column_mapping) {
+    $schema = parent::getSharedTableFieldSchema($storage_definition, $table_name, $column_mapping);
+    $field_name = $storage_definition->getName();
+
+    if ($table_name == 'node_revision') {
+      switch ($field_name) {
+        case 'langcode':
+          $this->addSharedTableFieldIndex($storage_definition, $schema, TRUE);
+          break;
+
+        case 'revision_uid':
+          $this->addSharedTableFieldForeignKey($storage_definition, $schema, 'users', 'uid');
+          break;
+      }
+    }
+
+    if ($table_name == 'node_field_data') {
+      switch ($field_name) {
+        case 'promote':
+        case 'status':
+        case 'sticky':
+        case 'title':
+          // Improves the performance of the indexes defined
+          // in getEntitySchema().
+          $schema['fields'][$field_name]['not null'] = TRUE;
+          break;
+
+        case 'changed':
+        case 'created':
+          // @todo Revisit index definitions:
+          //   https://www.drupal.org/node/2015277.
+          $this->addSharedTableFieldIndex($storage_definition, $schema, TRUE);
+          break;
+      }
+    }
+
+    return $schema;
+  }
+
+}

core/modules/node/src/NodeTranslationHandler.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\content_translation\ContentTranslationHandler;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Defines the translation handler for nodes.
+ */
+class NodeTranslationHandler extends ContentTranslationHandler {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function entityFormAlter(array &$form, FormStateInterface $form_state, EntityInterface $entity) {
+    parent::entityFormAlter($form, $form_state, $entity);
+
+    if (isset($form['content_translation'])) {
+      // We do not need to show these values on node forms: they inherit the
+      // basic node property values.
+      $form['content_translation']['status']['#access'] = FALSE;
+      $form['content_translation']['name']['#access'] = FALSE;
+      $form['content_translation']['created']['#access'] = FALSE;
+    }
+
+    $form_object = $form_state->getFormObject();
+    $form_langcode = $form_object->getFormLangcode($form_state);
+    $translations = $entity->getTranslationLanguages();
+    $status_translatable = NULL;
+    // Change the submit button labels if there was a status field they affect
+    // in which case their publishing / unpublishing may or may not apply
+    // to all translations.
+    if (!$entity->isNew() && (!isset($translations[$form_langcode]) || count($translations) > 1)) {
+      foreach ($entity->getFieldDefinitions() as $property_name => $definition) {
+        if ($property_name == 'status') {
+          $status_translatable = $definition->isTranslatable();
+        }
+      }
+      if (isset($status_translatable)) {
+        if (isset($form['actions']['submit'])) {
+          $form['actions']['submit']['#value'] .= ' ' . ($status_translatable ? t('(this translation)') : t('(all translations)'));
+        }
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function entityFormTitle(EntityInterface $entity) {
+    $type_name = node_get_type_label($entity);
+    return t('<em>Edit @type</em> @title', ['@type' => $type_name, '@title' => $entity->label()]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function entityFormEntityBuild($entity_type, EntityInterface $entity, array $form, FormStateInterface $form_state) {
+    if ($form_state->hasValue('content_translation')) {
+      $translation = &$form_state->getValue('content_translation');
+      $translation['status'] = $entity->isPublished();
+      $account = $entity->uid->entity;
+      $translation['uid'] = $account ? $account->id() : 0;
+      $translation['created'] = $this->dateFormatter->format($entity->created->value, 'custom', 'Y-m-d H:i:s O');
+    }
+    parent::entityFormEntityBuild($entity_type, $entity, $form, $form_state);
+  }
+
+}

core/modules/node/src/NodeTypeAccessControlHandler.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Entity\EntityAccessControlHandler;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Defines the access control handler for the node type entity type.
+ *
+ * @see \Drupal\node\Entity\NodeType
+ */
+class NodeTypeAccessControlHandler extends EntityAccessControlHandler {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
+    switch ($operation) {
+      case 'view':
+        return AccessResult::allowedIfHasPermission($account, 'access content');
+
+      case 'delete':
+        if ($entity->isLocked()) {
+          return AccessResult::forbidden()->addCacheableDependency($entity);
+        }
+        else {
+          return parent::checkAccess($entity, $operation, $account)->addCacheableDependency($entity);
+        }
+        break;
+
+      default:
+        return parent::checkAccess($entity, $operation, $account);
+
+    }
+  }
+
+}

core/modules/node/src/NodeTypeForm.php

@@ -0,0 +1,266 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Entity\BundleEntityFormBase;
+use Drupal\Core\Entity\EntityFieldManagerInterface;
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\language\Entity\ContentLanguageSettings;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Form handler for node type forms.
+ *
+ * @internal
+ */
+class NodeTypeForm extends BundleEntityFormBase {
+
+  /**
+   * The entity field manager.
+   *
+   * @var \Drupal\Core\Entity\EntityFieldManagerInterface
+   */
+  protected $entityFieldManager;
+
+  /**
+   * Constructs the NodeTypeForm object.
+   *
+   * @param \Drupal\Core\Entity\EntityFieldManagerInterface $entity_field_manager
+   *   The entity field manager.
+   */
+  public function __construct(EntityFieldManagerInterface $entity_field_manager) {
+    $this->entityFieldManager = $entity_field_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity_field.manager')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function form(array $form, FormStateInterface $form_state) {
+    $form = parent::form($form, $form_state);
+
+    $type = $this->entity;
+    if ($this->operation == 'add') {
+      $form['#title'] = $this->t('Add content type');
+      $fields = $this->entityFieldManager->getBaseFieldDefinitions('node');
+      // Create a node with a fake bundle using the type's UUID so that we can
+      // get the default values for workflow settings.
+      // @todo Make it possible to get default values without an entity.
+      //   https://www.drupal.org/node/2318187
+      $node = $this->entityTypeManager->getStorage('node')->create(['type' => $type->uuid()]);
+    }
+    else {
+      $form['#title'] = $this->t('Edit %label content type', ['%label' => $type->label()]);
+      $fields = $this->entityFieldManager->getFieldDefinitions('node', $type->id());
+      // Create a node to get the current values for workflow settings fields.
+      $node = $this->entityTypeManager->getStorage('node')->create(['type' => $type->id()]);
+    }
+
+    $form['name'] = [
+      '#title' => $this->t('Name'),
+      '#type' => 'textfield',
+      '#default_value' => $type->label(),
+      '#description' => $this->t('The human-readable name for this content type, displayed on the <em>Content types</em> page.'),
+      '#required' => TRUE,
+      '#size' => 30,
+    ];
+
+    $form['type'] = [
+      '#type' => 'machine_name',
+      '#default_value' => $type->id(),
+      '#maxlength' => EntityTypeInterface::BUNDLE_MAX_LENGTH,
+      '#disabled' => $type->isLocked(),
+      '#machine_name' => [
+        'exists' => ['Drupal\node\Entity\NodeType', 'load'],
+        'source' => ['name'],
+      ],
+      '#description' => $this->t('Unique machine-readable name: lowercase letters, numbers, and underscores only.', [
+        '%node-add' => $this->t('Add content'),
+      ]),
+    ];
+
+    $form['description'] = [
+      '#title' => $this->t('Description'),
+      '#type' => 'textarea',
+      '#default_value' => $type->getDescription(),
+      '#description' => $this->t('Displays on the <em>Content types</em> page.'),
+    ];
+
+    $form['additional_settings'] = [
+      '#type' => 'vertical_tabs',
+      '#attached' => [
+        'library' => ['node/drupal.content_types'],
+      ],
+    ];
+
+    $form['submission'] = [
+      '#type' => 'details',
+      '#title' => $this->t('Submission form settings'),
+      '#group' => 'additional_settings',
+      '#open' => TRUE,
+    ];
+    $form['submission']['title_label'] = [
+      '#title' => $this->t('Title field label'),
+      '#type' => 'textfield',
+      '#default_value' => $fields['title']->getLabel(),
+      '#required' => TRUE,
+    ];
+    $form['submission']['preview_mode'] = [
+      '#type' => 'radios',
+      '#title' => $this->t('Preview before submitting'),
+      '#default_value' => $type->getPreviewMode(),
+      '#options' => [
+        DRUPAL_DISABLED => $this->t('Disabled'),
+        DRUPAL_OPTIONAL => $this->t('Optional'),
+        DRUPAL_REQUIRED => $this->t('Required'),
+      ],
+    ];
+    $form['submission']['help'] = [
+      '#type' => 'textarea',
+      '#title' => $this->t('Explanation or submission guidelines'),
+      '#default_value' => $type->getHelp(),
+      '#description' => $this->t('This text will be displayed at the top of the page when creating or editing content of this type.'),
+    ];
+    $form['workflow'] = [
+      '#type' => 'details',
+      '#title' => $this->t('Publishing options'),
+      '#group' => 'additional_settings',
+    ];
+    $workflow_options = [
+      'status' => $node->status->value,
+      'promote' => $node->promote->value,
+      'sticky' => $node->sticky->value,
+      'revision' => $type->shouldCreateNewRevision(),
+    ];
+    // Prepare workflow options to be used for 'checkboxes' form element.
+    $keys = array_keys(array_filter($workflow_options));
+    $workflow_options = array_combine($keys, $keys);
+    $form['workflow']['options'] = [
+      '#type' => 'checkboxes',
+      '#title' => $this->t('Default options'),
+      '#default_value' => $workflow_options,
+      '#options' => [
+        'status' => $this->t('Published'),
+        'promote' => $this->t('Promoted to front page'),
+        'sticky' => $this->t('Sticky at top of lists'),
+        'revision' => $this->t('Create new revision'),
+      ],
+      '#description' => $this->t('Users with sufficient access rights will be able to override these options.'),
+    ];
+    if ($this->moduleHandler->moduleExists('language')) {
+      $form['language'] = [
+        '#type' => 'details',
+        '#title' => $this->t('Language settings'),
+        '#group' => 'additional_settings',
+      ];
+
+      $language_configuration = ContentLanguageSettings::loadByEntityTypeBundle('node', $type->id());
+      $form['language']['language_configuration'] = [
+        '#type' => 'language_configuration',
+        '#entity_information' => [
+          'entity_type' => 'node',
+          'bundle' => $type->id(),
+        ],
+        '#default_value' => $language_configuration,
+      ];
+    }
+    $form['display'] = [
+      '#type' => 'details',
+      '#title' => $this->t('Display settings'),
+      '#group' => 'additional_settings',
+    ];
+    $form['display']['display_submitted'] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Display author and date information'),
+      '#default_value' => $type->displaySubmitted(),
+      '#description' => $this->t('Author username and publish date will be displayed.'),
+    ];
+
+    return $this->protectBundleIdElement($form);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateForm(array &$form, FormStateInterface $form_state) {
+    parent::validateForm($form, $form_state);
+
+    $id = trim($form_state->getValue('type'));
+    // '0' is invalid, since elsewhere we check it using empty().
+    if ($id == '0') {
+      $form_state->setErrorByName('type', $this->t("Invalid machine-readable name. Enter a name other than %invalid.", ['%invalid' => $id]));
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildEntity(array $form, FormStateInterface $form_state) {
+    /** @var \Drupal\node\NodeTypeInterface $entity */
+    $entity = parent::buildEntity($form, $form_state);
+
+    // The description and help text cannot be empty strings.
+    if (trim($form_state->getValue('description')) === '') {
+      $entity->set('description', NULL);
+    }
+    if (trim($form_state->getValue('help')) === '') {
+      $entity->set('help', NULL);
+    }
+    return $entity;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function save(array $form, FormStateInterface $form_state) {
+    $type = $this->entity;
+    $type->setNewRevision($form_state->getValue(['options', 'revision']));
+    $type->set('type', trim($type->id()));
+    $type->set('name', trim($type->label()));
+
+    $status = $type->save();
+
+    $t_args = ['%name' => $type->label()];
+
+    if ($status == SAVED_UPDATED) {
+      $this->messenger()->addStatus($this->t('The content type %name has been updated.', $t_args));
+    }
+    elseif ($status == SAVED_NEW) {
+      node_add_body_field($type);
+      $this->messenger()->addStatus($this->t('The content type %name has been added.', $t_args));
+      $context = array_merge($t_args, ['link' => $type->toLink($this->t('View'), 'collection')->toString()]);
+      $this->logger('node')->notice('Added content type %name.', $context);
+    }
+
+    $fields = $this->entityFieldManager->getFieldDefinitions('node', $type->id());
+    // Update title field definition.
+    $title_field = $fields['title'];
+    $title_label = $form_state->getValue('title_label');
+    if ($title_field->getLabel() != $title_label) {
+      $title_field->getConfig($type->id())->setLabel($title_label)->save();
+    }
+    // Update workflow options.
+    // @todo Make it possible to get default values without an entity.
+    //   https://www.drupal.org/node/2318187
+    $node = $this->entityTypeManager->getStorage('node')->create(['type' => $type->id()]);
+    foreach (['status', 'promote', 'sticky'] as $field_name) {
+      $value = (bool) $form_state->getValue(['options', $field_name]);
+      if ($node->$field_name->value != $value) {
+        $fields[$field_name]->getConfig($type->id())->setDefaultValue($value)->save();
+      }
+    }
+
+    $this->entityFieldManager->clearCachedFieldDefinitions();
+    $form_state->setRedirectUrl($type->toUrl('collection'));
+  }
+
+}

core/modules/node/src/NodeTypeInterface.php

@@ -0,0 +1,77 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Config\Entity\ConfigEntityInterface;
+use Drupal\Core\Entity\RevisionableEntityBundleInterface;
+
+/**
+ * Provides an interface defining a node type entity.
+ */
+interface NodeTypeInterface extends ConfigEntityInterface, RevisionableEntityBundleInterface {
+
+  /**
+   * Determines whether the node type is locked.
+   *
+   * @return string|false
+   *   The module name that locks the type or FALSE.
+   */
+  public function isLocked();
+
+  /**
+   * Sets whether a new revision should be created by default.
+   *
+   * @param bool $new_revision
+   *   TRUE if a new revision should be created by default.
+   */
+  public function setNewRevision($new_revision);
+
+  /**
+   * Gets whether 'Submitted by' information should be shown.
+   *
+   * @return bool
+   *   TRUE if the submitted by information should be shown.
+   */
+  public function displaySubmitted();
+
+  /**
+   * Sets whether 'Submitted by' information should be shown.
+   *
+   * @param bool $display_submitted
+   *   TRUE if the submitted by information should be shown.
+   */
+  public function setDisplaySubmitted($display_submitted);
+
+  /**
+   * Gets the preview mode.
+   *
+   * @return int
+   *   DRUPAL_DISABLED, DRUPAL_OPTIONAL or DRUPAL_REQUIRED.
+   */
+  public function getPreviewMode();
+
+  /**
+   * Sets the preview mode.
+   *
+   * @param int $preview_mode
+   *   DRUPAL_DISABLED, DRUPAL_OPTIONAL or DRUPAL_REQUIRED.
+   */
+  public function setPreviewMode($preview_mode);
+
+  /**
+   * Gets the help information.
+   *
+   * @return string
+   *   The help information of this node type.
+   */
+  public function getHelp();
+
+  /**
+   * Gets the description.
+   *
+   * @return string
+   *   The description of this node type.
+   */
+  public function getDescription();
+
+}

core/modules/node/src/NodeTypeListBuilder.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Config\Entity\ConfigEntityListBuilder;
+use Drupal\Core\Url;
+use Drupal\Core\Entity\EntityInterface;
+
+/**
+ * Defines a class to build a listing of node type entities.
+ *
+ * @see \Drupal\node\Entity\NodeType
+ */
+class NodeTypeListBuilder extends ConfigEntityListBuilder {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildHeader() {
+    $header['title'] = t('Name');
+    $header['description'] = [
+      'data' => t('Description'),
+      'class' => [RESPONSIVE_PRIORITY_MEDIUM],
+    ];
+    return $header + parent::buildHeader();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildRow(EntityInterface $entity) {
+    $row['title'] = [
+      'data' => $entity->label(),
+      'class' => ['menu-label'],
+    ];
+    $row['description']['data'] = ['#markup' => $entity->getDescription()];
+    return $row + parent::buildRow($entity);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDefaultOperations(EntityInterface $entity) {
+    $operations = parent::getDefaultOperations($entity);
+    // Place the edit operation after the operations added by field_ui.module
+    // which have the weights 15, 20, 25.
+    if (isset($operations['edit'])) {
+      $operations['edit']['weight'] = 30;
+    }
+    return $operations;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function render() {
+    $build = parent::render();
+    $build['table']['#empty'] = $this->t('No content types available. <a href=":link">Add content type</a>.', [
+      ':link' => Url::fromRoute('node.type_add')->toString(),
+    ]);
+    return $build;
+  }
+
+}

core/modules/node/src/NodeViewBuilder.php

@@ -0,0 +1,162 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityViewBuilder;
+use Drupal\Core\Render\Element\Link;
+use Drupal\Core\Security\TrustedCallbackInterface;
+
+/**
+ * View builder handler for nodes.
+ */
+class NodeViewBuilder extends EntityViewBuilder implements TrustedCallbackInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildComponents(array &$build, array $entities, array $displays, $view_mode) {
+    /** @var \Drupal\node\NodeInterface[] $entities */
+    if (empty($entities)) {
+      return;
+    }
+
+    parent::buildComponents($build, $entities, $displays, $view_mode);
+
+    foreach ($entities as $id => $entity) {
+      $bundle = $entity->bundle();
+      $display = $displays[$bundle];
+
+      if ($display->getComponent('links')) {
+        $build[$id]['links'] = [
+          '#lazy_builder' => [
+            static::class . '::renderLinks', [
+              $entity->id(),
+              $view_mode,
+              $entity->language()->getId(),
+              !empty($entity->in_preview),
+              $entity->isDefaultRevision() ? NULL : $entity->getLoadedRevisionId(),
+            ],
+          ],
+        ];
+      }
+
+      // Add Language field text element to node render array.
+      if ($display->getComponent('langcode')) {
+        $build[$id]['langcode'] = [
+          '#type' => 'item',
+          '#title' => t('Language'),
+          '#markup' => $entity->language()->getName(),
+          '#prefix' => '<div id="field-language-display">',
+          '#suffix' => '</div>',
+        ];
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getBuildDefaults(EntityInterface $entity, $view_mode) {
+    $defaults = parent::getBuildDefaults($entity, $view_mode);
+
+    // Don't cache nodes that are in 'preview' mode.
+    if (isset($defaults['#cache']) && isset($entity->in_preview)) {
+      unset($defaults['#cache']);
+    }
+
+    return $defaults;
+  }
+
+  /**
+   * #lazy_builder callback; builds a node's links.
+   *
+   * @param string $node_entity_id
+   *   The node entity ID.
+   * @param string $view_mode
+   *   The view mode in which the node entity is being viewed.
+   * @param string $langcode
+   *   The language in which the node entity is being viewed.
+   * @param bool $is_in_preview
+   *   Whether the node is currently being previewed.
+   * @param $revision_id
+   *   (optional) The identifier of the node revision to be loaded. If none
+   *   is provided, the default revision will be loaded.
+   *
+   * @return array
+   *   A renderable array representing the node links.
+   */
+  public static function renderLinks($node_entity_id, $view_mode, $langcode, $is_in_preview, $revision_id = NULL) {
+    $links = [
+      '#theme' => 'links__node',
+      '#pre_render' => [[Link::class, 'preRenderLinks']],
+      '#attributes' => ['class' => ['links', 'inline']],
+    ];
+
+    if (!$is_in_preview) {
+      $storage = \Drupal::entityTypeManager()->getStorage('node');
+      /** @var \Drupal\node\NodeInterface $revision */
+      $revision = !isset($revision_id) ? $storage->load($node_entity_id) : $storage->loadRevision($revision_id);
+      $entity = $revision->getTranslation($langcode);
+      $links['node'] = static::buildLinks($entity, $view_mode);
+
+      // Allow other modules to alter the node links.
+      $hook_context = [
+        'view_mode' => $view_mode,
+        'langcode' => $langcode,
+      ];
+      \Drupal::moduleHandler()->alter('node_links', $links, $entity, $hook_context);
+    }
+    return $links;
+  }
+
+  /**
+   * Build the default links (Read more) for a node.
+   *
+   * @param \Drupal\node\NodeInterface $entity
+   *   The node object.
+   * @param string $view_mode
+   *   A view mode identifier.
+   *
+   * @return array
+   *   An array that can be processed by Link::preRenderLinks().
+   *
+   * @see \Drupal\Core\Render\Element\Link::preRenderLinks()
+   */
+  protected static function buildLinks(NodeInterface $entity, $view_mode) {
+    $links = [];
+
+    // Always display a read more link on teasers because we have no way
+    // to know when a teaser view is different than a full view.
+    if ($view_mode == 'teaser') {
+      $node_title_stripped = strip_tags($entity->label());
+      $links['node-readmore'] = [
+        'title' => t('Read more<span class="visually-hidden"> about @title</span>', [
+          '@title' => $node_title_stripped,
+        ]),
+        'url' => $entity->toUrl(),
+        'language' => $entity->language(),
+        'attributes' => [
+          'rel' => 'tag',
+          'title' => $node_title_stripped,
+        ],
+      ];
+    }
+
+    return [
+      '#theme' => 'links__node__node',
+      '#links' => $links,
+      '#attributes' => ['class' => ['links', 'inline']],
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function trustedCallbacks() {
+    $callbacks = parent::trustedCallbacks();
+    $callbacks[] = 'renderLinks';
+    return $callbacks;
+  }
+
+}

core/modules/node/src/NodeViewsData.php

@@ -0,0 +1,353 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\views\EntityViewsData;
+
+/**
+ * Provides the views data for the node entity type.
+ */
+class NodeViewsData extends EntityViewsData {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getViewsData() {
+    $data = parent::getViewsData();
+
+    $data['node_field_data']['table']['base']['weight'] = -10;
+    $data['node_field_data']['table']['base']['access query tag'] = 'node_access';
+    $data['node_field_data']['table']['wizard_id'] = 'node';
+
+    $data['node_field_data']['nid']['argument'] = [
+      'id' => 'node_nid',
+      'name field' => 'title',
+      'numeric' => TRUE,
+      'validate type' => 'nid',
+    ];
+
+    $data['node_field_data']['title']['field']['default_formatter_settings'] = ['link_to_entity' => TRUE];
+    $data['node_field_data']['title']['field']['link_to_node default'] = TRUE;
+
+    $data['node_field_data']['type']['argument']['id'] = 'node_type';
+
+    $data['node_field_data']['status']['filter']['label'] = $this->t('Published status');
+    $data['node_field_data']['status']['filter']['type'] = 'yes-no';
+    // Use status = 1 instead of status <> 0 in WHERE statement.
+    $data['node_field_data']['status']['filter']['use_equal'] = TRUE;
+
+    $data['node_field_data']['status_extra'] = [
+      'title' => $this->t('Published status or admin user'),
+      'help' => $this->t('Filters out unpublished content if the current user cannot view it.'),
+      'filter' => [
+        'field' => 'status',
+        'id' => 'node_status',
+        'label' => $this->t('Published status or admin user'),
+      ],
+    ];
+
+    $data['node_field_data']['promote']['help'] = $this->t('A boolean indicating whether the node is visible on the front page.');
+    $data['node_field_data']['promote']['filter']['label'] = $this->t('Promoted to front page status');
+    $data['node_field_data']['promote']['filter']['type'] = 'yes-no';
+
+    $data['node_field_data']['sticky']['help'] = $this->t('A boolean indicating whether the node should sort to the top of content lists.');
+    $data['node_field_data']['sticky']['filter']['label'] = $this->t('Sticky status');
+    $data['node_field_data']['sticky']['filter']['type'] = 'yes-no';
+    $data['node_field_data']['sticky']['sort']['help'] = $this->t('Whether or not the content is sticky. To list sticky content first, set this to descending.');
+
+    $data['node']['node_bulk_form'] = [
+      'title' => $this->t('Node operations bulk form'),
+      'help' => $this->t('Add a form element that lets you run operations on multiple nodes.'),
+      'field' => [
+        'id' => 'node_bulk_form',
+      ],
+    ];
+
+    // Bogus fields for aliasing purposes.
+
+    // @todo Add similar support to any date field
+    // @see https://www.drupal.org/node/2337507
+    $data['node_field_data']['created_fulldate'] = [
+      'title' => $this->t('Created date'),
+      'help' => $this->t('Date in the form of CCYYMMDD.'),
+      'argument' => [
+        'field' => 'created',
+        'id' => 'date_fulldate',
+      ],
+    ];
+
+    $data['node_field_data']['created_year_month'] = [
+      'title' => $this->t('Created year + month'),
+      'help' => $this->t('Date in the form of YYYYMM.'),
+      'argument' => [
+        'field' => 'created',
+        'id' => 'date_year_month',
+      ],
+    ];
+
+    $data['node_field_data']['created_year'] = [
+      'title' => $this->t('Created year'),
+      'help' => $this->t('Date in the form of YYYY.'),
+      'argument' => [
+        'field' => 'created',
+        'id' => 'date_year',
+      ],
+    ];
+
+    $data['node_field_data']['created_month'] = [
+      'title' => $this->t('Created month'),
+      'help' => $this->t('Date in the form of MM (01 - 12).'),
+      'argument' => [
+        'field' => 'created',
+        'id' => 'date_month',
+      ],
+    ];
+
+    $data['node_field_data']['created_day'] = [
+      'title' => $this->t('Created day'),
+      'help' => $this->t('Date in the form of DD (01 - 31).'),
+      'argument' => [
+        'field' => 'created',
+        'id' => 'date_day',
+      ],
+    ];
+
+    $data['node_field_data']['created_week'] = [
+      'title' => $this->t('Created week'),
+      'help' => $this->t('Date in the form of WW (01 - 53).'),
+      'argument' => [
+        'field' => 'created',
+        'id' => 'date_week',
+      ],
+    ];
+
+    $data['node_field_data']['changed_fulldate'] = [
+      'title' => $this->t('Updated date'),
+      'help' => $this->t('Date in the form of CCYYMMDD.'),
+      'argument' => [
+        'field' => 'changed',
+        'id' => 'date_fulldate',
+      ],
+    ];
+
+    $data['node_field_data']['changed_year_month'] = [
+      'title' => $this->t('Updated year + month'),
+      'help' => $this->t('Date in the form of YYYYMM.'),
+      'argument' => [
+        'field' => 'changed',
+        'id' => 'date_year_month',
+      ],
+    ];
+
+    $data['node_field_data']['changed_year'] = [
+      'title' => $this->t('Updated year'),
+      'help' => $this->t('Date in the form of YYYY.'),
+      'argument' => [
+        'field' => 'changed',
+        'id' => 'date_year',
+      ],
+    ];
+
+    $data['node_field_data']['changed_month'] = [
+      'title' => $this->t('Updated month'),
+      'help' => $this->t('Date in the form of MM (01 - 12).'),
+      'argument' => [
+        'field' => 'changed',
+        'id' => 'date_month',
+      ],
+    ];
+
+    $data['node_field_data']['changed_day'] = [
+      'title' => $this->t('Updated day'),
+      'help' => $this->t('Date in the form of DD (01 - 31).'),
+      'argument' => [
+        'field' => 'changed',
+        'id' => 'date_day',
+      ],
+    ];
+
+    $data['node_field_data']['changed_week'] = [
+      'title' => $this->t('Updated week'),
+      'help' => $this->t('Date in the form of WW (01 - 53).'),
+      'argument' => [
+        'field' => 'changed',
+        'id' => 'date_week',
+      ],
+    ];
+
+    $data['node']['node_listing_empty'] = [
+      'title' => $this->t('Empty Node Frontpage behavior'),
+      'help' => $this->t('Provides a link to the node add overview page.'),
+      'area' => [
+        'id' => 'node_listing_empty',
+      ],
+    ];
+
+    $data['node_field_data']['uid_revision']['title'] = $this->t('User has a revision');
+    $data['node_field_data']['uid_revision']['help'] = $this->t('All nodes where a certain user has a revision');
+    $data['node_field_data']['uid_revision']['real field'] = 'nid';
+    $data['node_field_data']['uid_revision']['filter']['id'] = 'node_uid_revision';
+    $data['node_field_data']['uid_revision']['argument']['id'] = 'node_uid_revision';
+
+    $data['node_field_revision']['table']['wizard_id'] = 'node_revision';
+
+    // Advertise this table as a possible base table.
+    $data['node_field_revision']['table']['base']['help'] = $this->t('Content revision is a history of changes to content.');
+    $data['node_field_revision']['table']['base']['defaults']['title'] = 'title';
+
+    $data['node_field_revision']['nid']['argument'] = [
+      'id' => 'node_nid',
+      'numeric' => TRUE,
+    ];
+    // @todo the NID field needs different behavior on revision/non-revision
+    //   tables. It would be neat if this could be encoded in the base field
+    //   definition.
+    $data['node_field_revision']['vid'] = [
+      'argument' => [
+        'id' => 'node_vid',
+        'numeric' => TRUE,
+      ],
+    ] + $data['node_field_revision']['vid'];
+
+    $data['node_field_revision']['langcode']['help'] = $this->t('The language the original content is in.');
+
+    $data['node_field_revision']['table']['wizard_id'] = 'node_field_revision';
+
+    $data['node_field_revision']['status']['filter']['label'] = $this->t('Published');
+    $data['node_field_revision']['status']['filter']['type'] = 'yes-no';
+    $data['node_field_revision']['status']['filter']['use_equal'] = TRUE;
+
+    $data['node_field_revision']['promote']['help'] = $this->t('A boolean indicating whether the node is visible on the front page.');
+
+    $data['node_field_revision']['sticky']['help'] = $this->t('A boolean indicating whether the node should sort to the top of content lists.');
+
+    $data['node_field_revision']['langcode']['help'] = $this->t('The language of the content or translation.');
+
+    $data['node_field_revision']['link_to_revision'] = [
+      'field' => [
+        'title' => $this->t('Link to revision'),
+        'help' => $this->t('Provide a simple link to the revision.'),
+        'id' => 'node_revision_link',
+        'click sortable' => FALSE,
+      ],
+    ];
+
+    $data['node_field_revision']['revert_revision'] = [
+      'field' => [
+        'title' => $this->t('Link to revert revision'),
+        'help' => $this->t('Provide a simple link to revert to the revision.'),
+        'id' => 'node_revision_link_revert',
+        'click sortable' => FALSE,
+      ],
+    ];
+
+    $data['node_field_revision']['delete_revision'] = [
+      'field' => [
+        'title' => $this->t('Link to delete revision'),
+        'help' => $this->t('Provide a simple link to delete the content revision.'),
+        'id' => 'node_revision_link_delete',
+        'click sortable' => FALSE,
+      ],
+    ];
+
+    // Define the base group of this table. Fields that don't have a group defined
+    // will go into this field by default.
+    $data['node_access']['table']['group'] = $this->t('Content access');
+
+    // For other base tables, explain how we join.
+    $data['node_access']['table']['join'] = [
+      'node_field_data' => [
+        'left_field' => 'nid',
+        'field' => 'nid',
+      ],
+    ];
+    $data['node_access']['nid'] = [
+      'title' => $this->t('Access'),
+      'help' => $this->t('Filter by access.'),
+      'filter' => [
+        'id' => 'node_access',
+        'help' => $this->t('Filter for content by view access. <strong>Not necessary if you are using node as your base table.</strong>'),
+      ],
+    ];
+
+    // Add search table, fields, filters, etc., but only if a page using the
+    // node_search plugin is enabled.
+    if (\Drupal::moduleHandler()->moduleExists('search')) {
+      $enabled = FALSE;
+      $search_page_repository = \Drupal::service('search.search_page_repository');
+      foreach ($search_page_repository->getActiveSearchPages() as $page) {
+        if ($page->getPlugin()->getPluginId() == 'node_search') {
+          $enabled = TRUE;
+          break;
+        }
+      }
+
+      if ($enabled) {
+        $data['node_search_index']['table']['group'] = $this->t('Search');
+
+        // Automatically join to the node table (or actually, node_field_data).
+        // Use a Views table alias to allow other modules to use this table too,
+        // if they use the search index.
+        $data['node_search_index']['table']['join'] = [
+          'node_field_data' => [
+            'left_field' => 'nid',
+            'field' => 'sid',
+            'table' => 'search_index',
+            'extra' => "node_search_index.type = 'node_search' AND node_search_index.langcode = node_field_data.langcode",
+          ],
+        ];
+
+        $data['node_search_total']['table']['join'] = [
+          'node_search_index' => [
+            'left_field' => 'word',
+            'field' => 'word',
+          ],
+        ];
+
+        $data['node_search_dataset']['table']['join'] = [
+          'node_field_data' => [
+            'left_field' => 'sid',
+            'left_table' => 'node_search_index',
+            'field' => 'sid',
+            'table' => 'search_dataset',
+            'extra' => 'node_search_index.type = node_search_dataset.type AND node_search_index.langcode = node_search_dataset.langcode',
+            'type' => 'INNER',
+          ],
+        ];
+
+        $data['node_search_index']['score'] = [
+          'title' => $this->t('Score'),
+          'help' => $this->t('The score of the search item. This will not be used if the search filter is not also present.'),
+          'field' => [
+            'id' => 'search_score',
+            'float' => TRUE,
+            'no group by' => TRUE,
+          ],
+          'sort' => [
+            'id' => 'search_score',
+            'no group by' => TRUE,
+          ],
+        ];
+
+        $data['node_search_index']['keys'] = [
+          'title' => $this->t('Search Keywords'),
+          'help' => $this->t('The keywords to search for.'),
+          'filter' => [
+            'id' => 'search_keywords',
+            'no group by' => TRUE,
+            'search_type' => 'node_search',
+          ],
+          'argument' => [
+            'id' => 'search',
+            'no group by' => TRUE,
+            'search_type' => 'node_search',
+          ],
+        ];
+
+      }
+    }
+
+    return $data;
+  }
+
+}

core/modules/node/src/PageCache/DenyNodePreview.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Drupal\node\PageCache;
+
+use Drupal\Core\PageCache\ResponsePolicyInterface;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * Cache policy for node preview page.
+ *
+ * This policy rule denies caching of responses generated by the
+ * entity.node.preview route.
+ */
+class DenyNodePreview implements ResponsePolicyInterface {
+
+  /**
+   * The current route match.
+   *
+   * @var \Drupal\Core\Routing\RouteMatchInterface
+   */
+  protected $routeMatch;
+
+  /**
+   * Constructs a deny node preview page cache policy.
+   *
+   * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
+   *   The current route match.
+   */
+  public function __construct(RouteMatchInterface $route_match) {
+    $this->routeMatch = $route_match;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function check(Response $response, Request $request) {
+    if ($this->routeMatch->getRouteName() === 'entity.node.preview') {
+      return static::DENY;
+    }
+  }
+
+}

core/modules/node/src/ParamConverter/NodePreviewConverter.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace Drupal\node\ParamConverter;
+
+use Drupal\Core\TempStore\PrivateTempStoreFactory;
+use Symfony\Component\Routing\Route;
+use Drupal\Core\ParamConverter\ParamConverterInterface;
+
+/**
+ * Provides upcasting for a node entity in preview.
+ */
+class NodePreviewConverter implements ParamConverterInterface {
+
+  /**
+   * Stores the tempstore factory.
+   *
+   * @var \Drupal\Core\TempStore\PrivateTempStoreFactory
+   */
+  protected $tempStoreFactory;
+
+  /**
+   * Constructs a new NodePreviewConverter.
+   *
+   * @param \Drupal\Core\TempStore\PrivateTempStoreFactory $temp_store_factory
+   *   The factory for the temp store object.
+   */
+  public function __construct(PrivateTempStoreFactory $temp_store_factory) {
+    $this->tempStoreFactory = $temp_store_factory;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function convert($value, $definition, $name, array $defaults) {
+    $store = $this->tempStoreFactory->get('node_preview');
+    if ($form_state = $store->get($value)) {
+      return $form_state->getFormObject()->getEntity();
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function applies($definition, $name, Route $route) {
+    if (!empty($definition['type']) && $definition['type'] == 'node_preview') {
+      return TRUE;
+    }
+    return FALSE;
+  }
+
+}

core/modules/node/src/Plugin/Action/AssignOwnerNode.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace Drupal\node\Plugin\Action;
+
+use Drupal\Core\Database\Connection;
+use Drupal\action\Plugin\Action\AssignOwnerNode as ActionAssignOwnerNode;
+
+/**
+ * Assigns ownership of a node to a user.
+ *
+ * @deprecated in drupal:10.3.0 and is removed from drupal:11.0.0. Use
+ *   \Drupal\action\Plugin\Action\AssignOwnerNode instead.
+ *
+ * @see https://www.drupal.org/node/3424506
+ */
+class AssignOwnerNode extends ActionAssignOwnerNode {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, Connection $connection) {
+    @trigger_error(__CLASS__ . ' is deprecated in drupal:10.3.0 and is removed from drupal:11.0.0. Use \Drupal\action\Plugin\Action\AssignOwnerNode instead. See https://www.drupal.org/node/3424506', E_USER_DEPRECATED);
+    parent::__construct($configuration, $plugin_id, $plugin_definition, $connection);
+  }
+
+}

core/modules/node/src/Plugin/Action/DemoteNode.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Drupal\node\Plugin\Action;
+
+use Drupal\Core\Action\Attribute\Action;
+use Drupal\Core\Field\FieldUpdateActionBase;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\node\NodeInterface;
+
+/**
+ * Demotes a node.
+ */
+#[Action(
+  id: 'node_unpromote_action',
+  label: new TranslatableMarkup('Demote selected content from front page'),
+  type: 'node'
+)]
+class DemoteNode extends FieldUpdateActionBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getFieldsToUpdate() {
+    return ['promote' => NodeInterface::NOT_PROMOTED];
+  }
+
+}

core/modules/node/src/Plugin/Action/PromoteNode.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Drupal\node\Plugin\Action;
+
+use Drupal\Core\Action\Attribute\Action;
+use Drupal\Core\Field\FieldUpdateActionBase;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\node\NodeInterface;
+
+/**
+ * Promotes a node.
+ */
+#[Action(
+  id: 'node_promote_action',
+  label: new TranslatableMarkup('Promote selected content to front page'),
+  type: 'node'
+)]
+class PromoteNode extends FieldUpdateActionBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getFieldsToUpdate() {
+    return ['promote' => NodeInterface::PROMOTED];
+  }
+
+}

core/modules/node/src/Plugin/Action/StickyNode.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Drupal\node\Plugin\Action;
+
+use Drupal\Core\Action\Attribute\Action;
+use Drupal\Core\Field\FieldUpdateActionBase;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\node\NodeInterface;
+
+/**
+ * Makes a node sticky.
+ */
+#[Action(
+  id: 'node_make_sticky_action',
+  label: new TranslatableMarkup('Make selected content sticky'),
+  type: 'node'
+)]
+class StickyNode extends FieldUpdateActionBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getFieldsToUpdate() {
+    return ['sticky' => NodeInterface::STICKY];
+  }
+
+}

core/modules/node/src/Plugin/Action/UnpublishByKeywordNode.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Drupal\node\Plugin\Action;
+
+use Drupal\action\Plugin\Action\UnpublishByKeywordNode as ActionUnpublishByKeywordNode;
+
+/**
+ * Unpublishes a node containing certain keywords.
+ *
+ * @deprecated in drupal:10.3.0 and is removed from drupal:11.0.0. Use
+ * \Drupal\action\Plugin\Action\UnpublishByKeywordNode instead.
+ *
+ * @see https://www.drupal.org/node/3424506
+ */
+class UnpublishByKeywordNode extends ActionUnpublishByKeywordNode {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition) {
+    @trigger_error(__CLASS__ . ' is deprecated in drupal:10.3.0 and is removed from drupal:11.0.0. Use \Drupal\action\Plugin\Action\UnpublishByKeywordNode instead. See https://www.drupal.org/node/3424506', E_USER_DEPRECATED);
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+  }
+
+}

core/modules/node/src/Plugin/Action/UnstickyNode.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Drupal\node\Plugin\Action;
+
+use Drupal\Core\Action\Attribute\Action;
+use Drupal\Core\Field\FieldUpdateActionBase;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\node\NodeInterface;
+
+/**
+ * Makes a node not sticky.
+ */
+#[Action(
+  id: 'node_make_unsticky_action',
+  label: new TranslatableMarkup('Make selected content not sticky'),
+  type: 'node'
+)]
+class UnstickyNode extends FieldUpdateActionBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getFieldsToUpdate() {
+    return ['sticky' => NodeInterface::NOT_STICKY];
+  }
+
+}

core/modules/node/src/Plugin/Block/SyndicateBlock.php

@@ -0,0 +1,90 @@
+<?php
+
+namespace Drupal\node\Plugin\Block;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Block\Attribute\Block;
+use Drupal\Core\Block\BlockBase;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Url;
+
+/**
+ * Provides a 'Syndicate' block that links to the site's RSS feed.
+ */
+#[Block(
+  id: "node_syndicate_block",
+  admin_label: new TranslatableMarkup("Syndicate"),
+  category: new TranslatableMarkup("System")
+)]
+class SyndicateBlock extends BlockBase implements ContainerFactoryPluginInterface {
+
+
+  /**
+   * The config factory.
+   *
+   * @var \Drupal\Core\Config\ConfigFactoryInterface
+   */
+  protected $configFactory;
+
+  /**
+   * Constructs a SyndicateBlock object.
+   *
+   * @param array $configuration
+   *   A configuration array containing information about the plugin instance.
+   * @param string $plugin_id
+   *   The plugin_id for the plugin instance.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Drupal\Core\Config\ConfigFactoryInterface $configFactory
+   *   The config factory.
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, ConfigFactoryInterface $configFactory) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+    $this->configFactory = $configFactory;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('config.factory')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration() {
+    return [
+      'block_count' => 10,
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function blockAccess(AccountInterface $account) {
+    return AccessResult::allowedIfHasPermission($account, 'access content');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function build() {
+    $title = $this->configuration['label'];
+    return [
+      '#theme' => 'feed_icon',
+      '#url' => Url::fromUri('internal:/rss.xml'),
+      '#title' => $title,
+    ];
+  }
+
+}

core/modules/node/src/Plugin/EntityReferenceSelection/NodeSelection.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace Drupal\node\Plugin\EntityReferenceSelection;
+
+use Drupal\Core\Entity\Attribute\EntityReferenceSelection;
+use Drupal\Core\Entity\Plugin\EntityReferenceSelection\DefaultSelection;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\node\NodeInterface;
+
+/**
+ * Provides specific access control for the node entity type.
+ */
+#[EntityReferenceSelection(
+  id: "default:node",
+  label: new TranslatableMarkup("Node selection"),
+  entity_types: ["node"],
+  group: "default",
+  weight: 1
+)]
+class NodeSelection extends DefaultSelection {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function buildEntityQuery($match = NULL, $match_operator = 'CONTAINS') {
+    $query = parent::buildEntityQuery($match, $match_operator);
+    // Adding the 'node_access' tag is sadly insufficient for nodes: core
+    // requires us to also know about the concept of 'published' and
+    // 'unpublished'. We need to do that as long as there are no access control
+    // modules in use on the site. As long as one access control module is there,
+    // it is supposed to handle this check.
+    if (!$this->currentUser->hasPermission('bypass node access') && !$this->moduleHandler->hasImplementations('node_grants')) {
+      $query->condition('status', NodeInterface::PUBLISHED);
+    }
+    return $query;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function createNewEntity($entity_type_id, $bundle, $label, $uid) {
+    $node = parent::createNewEntity($entity_type_id, $bundle, $label, $uid);
+
+    // In order to create a referenceable node, it needs to published.
+    /** @var \Drupal\node\NodeInterface $node */
+    $node->setPublished();
+
+    return $node;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateReferenceableNewEntities(array $entities) {
+    $entities = parent::validateReferenceableNewEntities($entities);
+    // Mirror the conditions checked in buildEntityQuery().
+    if (!$this->currentUser->hasPermission('bypass node access') && !$this->moduleHandler->hasImplementations('node_grants')) {
+      $entities = array_filter($entities, function ($node) {
+        /** @var \Drupal\node\NodeInterface $node */
+        return $node->isPublished();
+      });
+    }
+    return $entities;
+  }
+
+}

core/modules/node/src/Plugin/Search/NodeSearch.php

@@ -0,0 +1,878 @@
+<?php
+
+namespace Drupal\node\Plugin\Search;
+
+use Drupal\Core\Access\AccessibleInterface;
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Cache\CacheableMetadata;
+use Drupal\Core\Config\Config;
+use Drupal\Core\Database\Connection;
+use Drupal\Core\Database\Query\PagerSelectExtender;
+use Drupal\Core\Database\Query\SelectExtender;
+use Drupal\Core\Database\StatementInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Language\LanguageInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\Core\Messenger\MessengerInterface;
+use Drupal\Core\Render\RendererInterface;
+use Drupal\Core\Security\TrustedCallbackInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\node\NodeInterface;
+use Drupal\search\Attribute\Search;
+use Drupal\search\Plugin\ConfigurableSearchPluginBase;
+use Drupal\search\Plugin\SearchIndexingInterface;
+use Drupal\search\SearchIndexInterface;
+use Drupal\search\SearchQuery;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Handles searching for node entities using the Search module index.
+ */
+#[Search(
+  id: 'node_search',
+  title: new TranslatableMarkup('Content'),
+)]
+class NodeSearch extends ConfigurableSearchPluginBase implements AccessibleInterface, SearchIndexingInterface, TrustedCallbackInterface {
+
+  /**
+   * The current database connection.
+   *
+   * @var \Drupal\Core\Database\Connection
+   */
+  protected $database;
+
+  /**
+   * The replica database connection.
+   *
+   * @var \Drupal\Core\Database\Connection
+   */
+  protected $databaseReplica;
+
+  /**
+   * The entity type manager.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+   */
+  protected $entityTypeManager;
+
+  /**
+   * A module manager object.
+   *
+   * @var \Drupal\Core\Extension\ModuleHandlerInterface
+   */
+  protected $moduleHandler;
+
+  /**
+   * A config object for 'search.settings'.
+   *
+   * @var \Drupal\Core\Config\Config
+   */
+  protected $searchSettings;
+
+  /**
+   * The language manager.
+   *
+   * @var \Drupal\Core\Language\LanguageManagerInterface
+   */
+  protected $languageManager;
+
+  /**
+   * The Drupal account to use for checking for access to advanced search.
+   *
+   * @var \Drupal\Core\Session\AccountInterface
+   */
+  protected $account;
+
+  /**
+   * The Renderer service to format the username and node.
+   *
+   * @var \Drupal\Core\Render\RendererInterface
+   */
+  protected $renderer;
+
+  /**
+   * The search index.
+   *
+   * @var \Drupal\search\SearchIndexInterface
+   */
+  protected $searchIndex;
+
+  /**
+   * An array of additional rankings from hook_ranking().
+   *
+   * @var array
+   */
+  protected $rankings;
+
+  /**
+   * The list of options and info for advanced search filters.
+   *
+   * Each entry in the array has the option as the key and for its value, an
+   * array that determines how the value is matched in the database query. The
+   * possible keys in that array are:
+   * - column: (required) Name of the database column to match against.
+   * - join: (optional) Information on a table to join. By default the data is
+   *   matched against the {node_field_data} table.
+   * - operator: (optional) OR or AND, defaults to OR.
+   *
+   * @var array
+   */
+  protected $advanced = [
+    'type' => ['column' => 'n.type'],
+    'language' => ['column' => 'i.langcode'],
+    'author' => ['column' => 'n.uid'],
+    'term' => ['column' => 'ti.tid', 'join' => ['table' => 'taxonomy_index', 'alias' => 'ti', 'condition' => 'n.nid = ti.nid']],
+  ];
+
+  /**
+   * A constant for setting and checking the query string.
+   */
+  const ADVANCED_FORM = 'advanced-form';
+
+  /**
+   * The messenger.
+   *
+   * @var \Drupal\Core\Messenger\MessengerInterface
+   */
+  protected $messenger;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('database'),
+      $container->get('entity_type.manager'),
+      $container->get('module_handler'),
+      $container->get('config.factory')->get('search.settings'),
+      $container->get('language_manager'),
+      $container->get('renderer'),
+      $container->get('messenger'),
+      $container->get('current_user'),
+      $container->get('database.replica'),
+      $container->get('search.index')
+    );
+  }
+
+  /**
+   * Constructs a \Drupal\node\Plugin\Search\NodeSearch object.
+   *
+   * @param array $configuration
+   *   A configuration array containing information about the plugin instance.
+   * @param string $plugin_id
+   *   The plugin_id for the plugin instance.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Drupal\Core\Database\Connection $database
+   *   The current database connection.
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   *   The entity type manager.
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   A module manager object.
+   * @param \Drupal\Core\Config\Config $search_settings
+   *   A config object for 'search.settings'.
+   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+   *   The language manager.
+   * @param \Drupal\Core\Render\RendererInterface $renderer
+   *   The renderer.
+   * @param \Drupal\Core\Messenger\MessengerInterface $messenger
+   *   The messenger.
+   * @param \Drupal\Core\Session\AccountInterface $account
+   *   The $account object to use for checking for access to advanced search.
+   * @param \Drupal\Core\Database\Connection|null $database_replica
+   *   The replica database connection.
+   * @param \Drupal\search\SearchIndexInterface $search_index
+   *   The search index.
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, Connection $database, EntityTypeManagerInterface $entity_type_manager, ModuleHandlerInterface $module_handler, Config $search_settings, LanguageManagerInterface $language_manager, RendererInterface $renderer, MessengerInterface $messenger, AccountInterface $account, Connection $database_replica, SearchIndexInterface $search_index) {
+    $this->database = $database;
+    $this->databaseReplica = $database_replica;
+    $this->entityTypeManager = $entity_type_manager;
+    $this->moduleHandler = $module_handler;
+    $this->searchSettings = $search_settings;
+    $this->languageManager = $language_manager;
+    $this->renderer = $renderer;
+    $this->messenger = $messenger;
+    $this->account = $account;
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+
+    $this->addCacheTags(['node_list']);
+    $this->searchIndex = $search_index;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function access($operation = 'view', ?AccountInterface $account = NULL, $return_as_object = FALSE) {
+    $result = AccessResult::allowedIfHasPermission($account, 'access content');
+    return $return_as_object ? $result : $result->isAllowed();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isSearchExecutable() {
+    // Node search is executable if we have keywords or an advanced parameter.
+    // At least, we should parse out the parameters and see if there are any
+    // keyword matches in that case, rather than just printing out the
+    // "Enter keywords" message.
+    return !empty($this->keywords) || (isset($this->searchParameters['f']) && count($this->searchParameters['f']));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getType() {
+    return $this->getPluginId();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function execute() {
+    if ($this->isSearchExecutable()) {
+      $results = $this->findResults();
+
+      if ($results) {
+        return $this->prepareResults($results);
+      }
+    }
+
+    return [];
+  }
+
+  /**
+   * Queries to find search results, and sets status messages.
+   *
+   * This method can assume that $this->isSearchExecutable() has already been
+   * checked and returned TRUE.
+   *
+   * @return \Drupal\Core\Database\StatementInterface|null
+   *   Results from search query execute() method, or NULL if the search
+   *   failed.
+   */
+  protected function findResults() {
+    $keys = $this->keywords;
+
+    // Build matching conditions.
+    $query = $this->databaseReplica
+      ->select('search_index', 'i')
+      ->extend(SearchQuery::class)
+      ->extend(PagerSelectExtender::class);
+    $query->join('node_field_data', 'n', '[n].[nid] = [i].[sid] AND [n].[langcode] = [i].[langcode]');
+    $query->condition('n.status', 1)
+      ->addTag('node_access')
+      ->searchExpression($keys, $this->getPluginId());
+
+    // Handle advanced search filters in the f query string.
+    // \Drupal::request()->query->get('f') is an array that looks like this in
+    // the URL: ?f[]=type:page&f[]=term:27&f[]=term:13&f[]=langcode:en
+    // So $parameters['f'] looks like:
+    // array('type:page', 'term:27', 'term:13', 'langcode:en');
+    // We need to parse this out into query conditions, some of which go into
+    // the keywords string, and some of which are separate conditions.
+    $parameters = $this->getParameters();
+    if (!empty($parameters['f']) && is_array($parameters['f'])) {
+      $filters = [];
+      // Match any query value that is an expected option and a value
+      // separated by ':' like 'term:27'.
+      $pattern = '/^(' . implode('|', array_keys($this->advanced)) . '):([^ ]*)/i';
+      foreach ($parameters['f'] as $item) {
+        if (preg_match($pattern, $item, $m)) {
+          // Use the matched value as the array key to eliminate duplicates.
+          $filters[$m[1]][$m[2]] = $m[2];
+        }
+      }
+
+      // Now turn these into query conditions. This assumes that everything in
+      // $filters is a known type of advanced search.
+      foreach ($filters as $option => $matched) {
+        $info = $this->advanced[$option];
+        // Insert additional conditions. By default, all use the OR operator.
+        $operator = empty($info['operator']) ? 'OR' : $info['operator'];
+        $where = $this->databaseReplica->condition($operator);
+        foreach ($matched as $value) {
+          $where->condition($info['column'], $value);
+        }
+        $query->condition($where);
+        if (!empty($info['join'])) {
+          $query->join($info['join']['table'], $info['join']['alias'], $info['join']['condition']);
+        }
+      }
+    }
+
+    // Add the ranking expressions.
+    $this->addNodeRankings($query);
+
+    // Run the query.
+    $find = $query
+      // Add the language code of the indexed item to the result of the query,
+      // since the node will be rendered using the respective language.
+      ->fields('i', ['langcode'])
+      // And since SearchQuery makes these into GROUP BY queries, if we add
+      // a field, for PostgreSQL we also need to make it an aggregate or a
+      // GROUP BY. In this case, we want GROUP BY.
+      ->groupBy('i.langcode')
+      ->limit(10)
+      ->execute();
+
+    // Check query status and set messages if needed.
+    $status = $query->getStatus();
+
+    if ($status & SearchQuery::EXPRESSIONS_IGNORED) {
+      $this->messenger->addWarning($this->t('Your search used too many AND/OR expressions. Only the first @count terms were included in this search.', ['@count' => $this->searchSettings->get('and_or_limit')]));
+    }
+
+    if ($status & SearchQuery::LOWER_CASE_OR) {
+      $this->messenger->addWarning($this->t('Search for either of the two terms with uppercase <strong>OR</strong>. For example, <strong>cats OR dogs</strong>.'));
+    }
+
+    if ($status & SearchQuery::NO_POSITIVE_KEYWORDS) {
+      $this->messenger->addWarning($this->formatPlural($this->searchSettings->get('index.minimum_word_size'), 'You must include at least one keyword to match in the content, and punctuation is ignored.', 'You must include at least one keyword to match in the content. Keywords must be at least @count characters, and punctuation is ignored.'));
+    }
+
+    return $find;
+  }
+
+  /**
+   * Prepares search results for rendering.
+   *
+   * @param \Drupal\Core\Database\StatementInterface $found
+   *   Results found from a successful search query execute() method.
+   *
+   * @return array
+   *   Array of search result item render arrays (empty array if no results).
+   */
+  protected function prepareResults(StatementInterface $found) {
+    $results = [];
+
+    $node_storage = $this->entityTypeManager->getStorage('node');
+    $node_render = $this->entityTypeManager->getViewBuilder('node');
+    $keys = $this->keywords;
+
+    foreach ($found as $item) {
+      // Render the node.
+      /** @var \Drupal\node\NodeInterface $node */
+      $node = $node_storage->load($item->sid)->getTranslation($item->langcode);
+      $build = $node_render->view($node, 'search_result', $item->langcode);
+
+      /** @var \Drupal\node\NodeTypeInterface $type*/
+      $type = $this->entityTypeManager->getStorage('node_type')->load($node->bundle());
+
+      unset($build['#theme']);
+      $build['#pre_render'][] = [$this, 'removeSubmittedInfo'];
+
+      // Fetch comments for snippet.
+      $rendered = $this->renderer->renderInIsolation($build);
+      $this->addCacheableDependency(CacheableMetadata::createFromRenderArray($build));
+      $rendered .= ' ' . $this->moduleHandler->invoke('comment', 'node_update_index', [$node]);
+
+      $extra = $this->moduleHandler->invokeAll('node_search_result', [$node]);
+
+      $username = [
+        '#theme' => 'username',
+        '#account' => $node->getOwner(),
+      ];
+
+      $result = [
+        'link' => $node->toUrl('canonical', ['absolute' => TRUE])->toString(),
+        'type' => $type->label(),
+        'title' => $node->label(),
+        'node' => $node,
+        'extra' => $extra,
+        'score' => $item->calculated_score,
+        'snippet' => search_excerpt($keys, $rendered, $item->langcode),
+        'langcode' => $node->language()->getId(),
+      ];
+
+      $this->addCacheableDependency($node);
+
+      // We have to separately add the node owner's cache tags because search
+      // module doesn't use the rendering system, it does its own rendering
+      // without taking cacheability metadata into account. So we have to do it
+      // explicitly here.
+      $this->addCacheableDependency($node->getOwner());
+
+      if ($type->displaySubmitted()) {
+        $result += [
+          'user' => $this->renderer->renderInIsolation($username),
+          'date' => $node->getChangedTime(),
+        ];
+      }
+
+      $results[] = $result;
+
+    }
+    return $results;
+  }
+
+  /**
+   * Removes the submitted by information from the build array.
+   *
+   * This information is being removed from the rendered node that is used to
+   * build the search result snippet. It just doesn't make sense to have it
+   * displayed in the snippet.
+   *
+   * @param array $build
+   *   The build array.
+   *
+   * @return array
+   *   The modified build array.
+   */
+  public function removeSubmittedInfo(array $build) {
+    unset($build['created']);
+    unset($build['uid']);
+    return $build;
+  }
+
+  /**
+   * Adds the configured rankings to the search query.
+   *
+   * @param $query
+   *   A query object that has been extended with the Search DB Extender.
+   */
+  protected function addNodeRankings(SelectExtender $query) {
+    if ($ranking = $this->getRankings()) {
+      $tables = &$query->getTables();
+      foreach ($ranking as $rank => $values) {
+        if (isset($this->configuration['rankings'][$rank]) && !empty($this->configuration['rankings'][$rank])) {
+          $node_rank = $this->configuration['rankings'][$rank];
+          // If the table defined in the ranking isn't already joined, then add it.
+          if (isset($values['join']) && !isset($tables[$values['join']['alias']])) {
+            $query->addJoin($values['join']['type'], $values['join']['table'], $values['join']['alias'], $values['join']['on']);
+          }
+          $arguments = $values['arguments'] ?? [];
+          $query->addScore($values['score'], $arguments, $node_rank);
+        }
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function updateIndex() {
+    // Interpret the cron limit setting as the maximum number of nodes to index
+    // per cron run.
+    $limit = (int) $this->searchSettings->get('index.cron_limit');
+
+    $query = $this->databaseReplica->select('node', 'n');
+    $query->addField('n', 'nid');
+    $query->leftJoin('search_dataset', 'sd', '[sd].[sid] = [n].[nid] AND [sd].[type] = :type', [':type' => $this->getPluginId()]);
+    $query->addExpression('CASE MAX([sd].[reindex]) WHEN NULL THEN 0 ELSE 1 END', 'ex');
+    $query->addExpression('MAX([sd].[reindex])', 'ex2');
+    $query->condition(
+        $query->orConditionGroup()
+          ->where('[sd].[sid] IS NULL')
+          ->condition('sd.reindex', 0, '<>')
+      );
+    $query->orderBy('ex', 'DESC')
+      ->orderBy('ex2')
+      ->orderBy('n.nid')
+      ->groupBy('n.nid')
+      ->range(0, $limit);
+
+    $nids = $query->execute()->fetchCol();
+    if (!$nids) {
+      return;
+    }
+
+    $node_storage = $this->entityTypeManager->getStorage('node');
+    $words = [];
+    try {
+      foreach ($node_storage->loadMultiple($nids) as $node) {
+        $words += $this->indexNode($node);
+      }
+    }
+    finally {
+      $this->searchIndex->updateWordWeights($words);
+    }
+  }
+
+  /**
+   * Indexes a single node.
+   *
+   * @param \Drupal\node\NodeInterface $node
+   *   The node to index.
+   *
+   * @return array
+   *   An array of words to update after indexing.
+   */
+  protected function indexNode(NodeInterface $node) {
+    $words = [];
+    $languages = $node->getTranslationLanguages();
+    $node_render = $this->entityTypeManager->getViewBuilder('node');
+
+    foreach ($languages as $language) {
+      $node = $node->getTranslation($language->getId());
+      // Render the node.
+      $build = $node_render->view($node, 'search_index', $language->getId());
+
+      unset($build['#theme']);
+
+      // Add the title to text so it is searchable.
+      $build['search_title'] = [
+        '#prefix' => '<h1>',
+        '#plain_text' => $node->label(),
+        '#suffix' => '</h1>',
+        '#weight' => -1000,
+      ];
+      $text = $this->renderer->renderInIsolation($build);
+
+      // Fetch extra data normally not visible.
+      $extra = $this->moduleHandler->invokeAll('node_update_index', [$node]);
+      foreach ($extra as $t) {
+        $text .= $t;
+      }
+
+      // Update index, using search index "type" equal to the plugin ID.
+      $words += $this->searchIndex->index($this->getPluginId(), $node->id(), $language->getId(), $text, FALSE);
+    }
+    return $words;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function indexClear() {
+    // All NodeSearch pages share a common search index "type" equal to
+    // the plugin ID.
+    $this->searchIndex->clear($this->getPluginId());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function markForReindex() {
+    // All NodeSearch pages share a common search index "type" equal to
+    // the plugin ID.
+    $this->searchIndex->markForReindex($this->getPluginId());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function indexStatus() {
+    $total = $this->database->query('SELECT COUNT(*) FROM {node}')->fetchField();
+    $remaining = $this->database->query("SELECT COUNT(DISTINCT [n].[nid]) FROM {node} [n] LEFT JOIN {search_dataset} [sd] ON [sd].[sid] = [n].[nid] AND [sd].[type] = :type WHERE [sd].[sid] IS NULL OR [sd].[reindex] <> 0", [':type' => $this->getPluginId()])->fetchField();
+
+    return ['remaining' => $remaining, 'total' => $total];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function searchFormAlter(array &$form, FormStateInterface $form_state) {
+    $parameters = $this->getParameters();
+    $keys = $this->getKeywords();
+    $used_advanced = !empty($parameters[self::ADVANCED_FORM]);
+    if ($used_advanced) {
+      $f = isset($parameters['f']) ? (array) $parameters['f'] : [];
+      $defaults = $this->parseAdvancedDefaults($f, $keys);
+    }
+    else {
+      $defaults = ['keys' => $keys];
+    }
+
+    $form['basic']['keys']['#default_value'] = $defaults['keys'];
+
+    // Add advanced search keyword-related boxes.
+    $form['advanced'] = [
+      '#type' => 'details',
+      '#title' => $this->t('Advanced search'),
+      '#attributes' => ['class' => ['search-advanced']],
+      '#access' => $this->account && $this->account->hasPermission('use advanced search'),
+      '#open' => $used_advanced,
+    ];
+    $form['advanced']['keywords-fieldset'] = [
+      '#type' => 'fieldset',
+      '#title' => $this->t('Keywords'),
+    ];
+
+    $form['advanced']['keywords'] = [
+      '#prefix' => '<div class="criterion">',
+      '#suffix' => '</div>',
+    ];
+
+    $form['advanced']['keywords-fieldset']['keywords']['or'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Containing any of the words'),
+      '#size' => 30,
+      '#maxlength' => 255,
+      '#default_value' => $defaults['or'] ?? '',
+    ];
+
+    $form['advanced']['keywords-fieldset']['keywords']['phrase'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Containing the phrase'),
+      '#size' => 30,
+      '#maxlength' => 255,
+      '#default_value' => $defaults['phrase'] ?? '',
+    ];
+
+    $form['advanced']['keywords-fieldset']['keywords']['negative'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Containing none of the words'),
+      '#size' => 30,
+      '#maxlength' => 255,
+      '#default_value' => $defaults['negative'] ?? '',
+    ];
+
+    // Add node types.
+    $types = array_map(['\Drupal\Component\Utility\Html', 'escape'], node_type_get_names());
+    $form['advanced']['types-fieldset'] = [
+      '#type' => 'fieldset',
+      '#title' => $this->t('Types'),
+    ];
+    $form['advanced']['types-fieldset']['type'] = [
+      '#type' => 'checkboxes',
+      '#title' => $this->t('Only of the type(s)'),
+      '#prefix' => '<div class="criterion">',
+      '#suffix' => '</div>',
+      '#options' => $types,
+      '#default_value' => $defaults['type'] ?? [],
+    ];
+
+    $form['advanced']['submit'] = [
+      '#type' => 'submit',
+      '#value' => $this->t('Advanced search'),
+      '#prefix' => '<div class="action">',
+      '#suffix' => '</div>',
+      '#weight' => 100,
+    ];
+
+    // Add languages.
+    $language_options = [];
+    $language_list = $this->languageManager->getLanguages(LanguageInterface::STATE_ALL);
+    foreach ($language_list as $langcode => $language) {
+      // Make locked languages appear special in the list.
+      $language_options[$langcode] = $language->isLocked() ? $this->t('- @name -', ['@name' => $language->getName()]) : $language->getName();
+    }
+    if (count($language_options) > 1) {
+      $form['advanced']['lang-fieldset'] = [
+        '#type' => 'fieldset',
+        '#title' => $this->t('Languages'),
+      ];
+      $form['advanced']['lang-fieldset']['language'] = [
+        '#type' => 'checkboxes',
+        '#title' => $this->t('Languages'),
+        '#prefix' => '<div class="criterion">',
+        '#suffix' => '</div>',
+        '#options' => $language_options,
+        '#default_value' => $defaults['language'] ?? [],
+      ];
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildSearchUrlQuery(FormStateInterface $form_state) {
+    // Read keyword and advanced search information from the form values,
+    // and put these into the GET parameters.
+    $keys = trim($form_state->getValue('keys'));
+    $advanced = FALSE;
+
+    // Collect extra filters.
+    $filters = [];
+    if ($form_state->hasValue('type') && is_array($form_state->getValue('type'))) {
+      // Retrieve selected types - Form API sets the value of unselected
+      // checkboxes to 0.
+      foreach ($form_state->getValue('type') as $type) {
+        if ($type) {
+          $advanced = TRUE;
+          $filters[] = 'type:' . $type;
+        }
+      }
+    }
+
+    if ($form_state->hasValue('term') && is_array($form_state->getValue('term'))) {
+      foreach ($form_state->getValue('term') as $term) {
+        $filters[] = 'term:' . $term;
+        $advanced = TRUE;
+      }
+    }
+    if ($form_state->hasValue('language') && is_array($form_state->getValue('language'))) {
+      foreach ($form_state->getValue('language') as $language) {
+        if ($language) {
+          $advanced = TRUE;
+          $filters[] = 'language:' . $language;
+        }
+      }
+    }
+    if ($form_state->getValue('or') != '') {
+      if (preg_match_all('/ ("[^"]+"|[^" ]+)/i', ' ' . $form_state->getValue('or'), $matches)) {
+        $keys .= ' ' . implode(' OR ', $matches[1]);
+        $advanced = TRUE;
+      }
+    }
+    if ($form_state->getValue('negative') != '') {
+      if (preg_match_all('/ ("[^"]+"|[^" ]+)/i', ' ' . $form_state->getValue('negative'), $matches)) {
+        $keys .= ' -' . implode(' -', $matches[1]);
+        $advanced = TRUE;
+      }
+    }
+    if ($form_state->getValue('phrase') != '') {
+      $keys .= ' "' . str_replace('"', ' ', $form_state->getValue('phrase')) . '"';
+      $advanced = TRUE;
+    }
+    $keys = trim($keys);
+
+    // Put the keywords and advanced parameters into GET parameters. Make sure
+    // to put keywords into the query even if it is empty, because the page
+    // controller uses that to decide it's time to check for search results.
+    $query = ['keys' => $keys];
+    if ($filters) {
+      $query['f'] = $filters;
+    }
+    // Record that the person used the advanced search form, if they did.
+    if ($advanced) {
+      $query[self::ADVANCED_FORM] = '1';
+    }
+
+    return $query;
+  }
+
+  /**
+   * Parses the advanced search form default values.
+   *
+   * @param array $f
+   *   The 'f' query parameter set up in self::buildUrlSearchQuery(), which
+   *   contains the advanced query values.
+   * @param string $keys
+   *   The search keywords string, which contains some information from the
+   *   advanced search form.
+   *
+   * @return array
+   *   Array of default form values for the advanced search form, including
+   *   a modified 'keys' element for the bare search keywords.
+   */
+  protected function parseAdvancedDefaults($f, $keys) {
+    $defaults = [];
+
+    // Split out the advanced search parameters.
+    foreach ($f as $advanced) {
+      [$key, $value] = explode(':', $advanced, 2);
+      if (!isset($defaults[$key])) {
+        $defaults[$key] = [];
+      }
+      $defaults[$key][] = $value;
+    }
+
+    // Split out the negative, phrase, and OR parts of keywords.
+
+    // For phrases, the form only supports one phrase.
+    $matches = [];
+    $keys = ' ' . $keys . ' ';
+    if (preg_match('/ "([^"]+)" /', $keys, $matches)) {
+      $keys = str_replace($matches[0], ' ', $keys);
+      $defaults['phrase'] = $matches[1];
+    }
+
+    // Negative keywords: pull all of them out.
+    if (preg_match_all('/ -([^ ]+)/', $keys, $matches)) {
+      $keys = str_replace($matches[0], ' ', $keys);
+      $defaults['negative'] = implode(' ', $matches[1]);
+    }
+
+    // OR keywords: pull up to one set of them out of the query.
+    if (preg_match('/ [^ ]+( OR [^ ]+)+ /', $keys, $matches)) {
+      $keys = str_replace($matches[0], ' ', $keys);
+      $words = explode(' OR ', trim($matches[0]));
+      $defaults['or'] = implode(' ', $words);
+    }
+
+    // Put remaining keywords string back into keywords.
+    $defaults['keys'] = trim($keys);
+
+    return $defaults;
+  }
+
+  /**
+   * Gathers ranking definitions from hook_ranking().
+   *
+   * @return array
+   *   An array of ranking definitions.
+   */
+  protected function getRankings() {
+    if (!$this->rankings) {
+      $this->rankings = $this->moduleHandler->invokeAll('ranking');
+    }
+    return $this->rankings;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration() {
+    $configuration = [
+      'rankings' => [],
+    ];
+    return $configuration;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+    // Output form for defining rank factor weights.
+    $form['content_ranking'] = [
+      '#type' => 'details',
+      '#title' => $this->t('Content ranking'),
+      '#open' => TRUE,
+    ];
+    $form['content_ranking']['info'] = [
+      '#markup' => '<p><em>' . $this->t('Influence is a numeric multiplier used in ordering search results. A higher number means the corresponding factor has more influence on search results; zero means the factor is ignored. Changing these numbers does not require the search index to be rebuilt. Changes take effect immediately.') . '</em></p>',
+    ];
+    // Prepare table.
+    $header = [$this->t('Factor'), $this->t('Influence')];
+    $form['content_ranking']['rankings'] = [
+      '#type' => 'table',
+      '#header' => $header,
+    ];
+
+    // Note: reversed to reflect that higher number = higher ranking.
+    $range = range(0, 10);
+    $options = array_combine($range, $range);
+    foreach ($this->getRankings() as $var => $values) {
+      $form['content_ranking']['rankings'][$var]['name'] = [
+        '#markup' => $values['title'],
+      ];
+      $form['content_ranking']['rankings'][$var]['value'] = [
+        '#type' => 'select',
+        '#options' => $options,
+        '#attributes' => ['aria-label' => $this->t("Influence of '@title'", ['@title' => $values['title']])],
+        '#default_value' => $this->configuration['rankings'][$var] ?? 0,
+      ];
+    }
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
+    foreach ($this->getRankings() as $var => $values) {
+      if (!$form_state->isValueEmpty(['rankings', $var, 'value'])) {
+        $this->configuration['rankings'][$var] = $form_state->getValue(['rankings', $var, 'value']);
+      }
+      else {
+        unset($this->configuration['rankings'][$var]);
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function trustedCallbacks() {
+    return ['removeSubmittedInfo'];
+  }
+
+}

core/modules/node/src/Plugin/migrate/D6NodeDeriver.php

@@ -0,0 +1,124 @@
+<?php
+
+namespace Drupal\node\Plugin\migrate;
+
+use Drupal\Component\Plugin\Derivative\DeriverBase;
+use Drupal\Core\Database\DatabaseExceptionWrapper;
+use Drupal\Core\Plugin\Discovery\ContainerDeriverInterface;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\migrate\Exception\RequirementsException;
+use Drupal\migrate\Plugin\MigrationDeriverTrait;
+use Drupal\migrate_drupal\FieldDiscoveryInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Deriver for Drupal 6 node and node revision migrations based on node types.
+ */
+class D6NodeDeriver extends DeriverBase implements ContainerDeriverInterface {
+  use MigrationDeriverTrait;
+  use StringTranslationTrait;
+
+  /**
+   * The base plugin ID this derivative is for.
+   *
+   * @var string
+   */
+  protected $basePluginId;
+
+  /**
+   * Whether or not to include translations.
+   *
+   * @var bool
+   */
+  protected $includeTranslations;
+
+  /**
+   * The migration field discovery service.
+   *
+   * @var \Drupal\migrate_drupal\FieldDiscoveryInterface
+   */
+  protected $fieldDiscovery;
+
+  /**
+   * D6NodeDeriver constructor.
+   *
+   * @param string $base_plugin_id
+   *   The base plugin ID for the plugin ID.
+   * @param bool $translations
+   *   Whether or not to include translations.
+   * @param \Drupal\migrate_drupal\FieldDiscoveryInterface $field_discovery
+   *   The migration field discovery service.
+   */
+  public function __construct($base_plugin_id, $translations, FieldDiscoveryInterface $field_discovery) {
+    $this->basePluginId = $base_plugin_id;
+    $this->includeTranslations = $translations;
+    $this->fieldDiscovery = $field_discovery;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, $base_plugin_id) {
+    // Translations don't make sense unless we have content_translation.
+    return new static(
+      $base_plugin_id,
+      $container->get('module_handler')->moduleExists('content_translation'),
+      $container->get('migrate_drupal.field_discovery')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDerivativeDefinitions($base_plugin_definition) {
+    if ($base_plugin_definition['id'] == 'd6_node_translation' && !$this->includeTranslations) {
+      // Refuse to generate anything.
+      return $this->derivatives;
+    }
+
+    $node_types = static::getSourcePlugin('d6_node_type');
+    try {
+      $node_types->checkRequirements();
+    }
+    catch (RequirementsException $e) {
+      // If the d6_node_type requirements failed, that means we do not have a
+      // Drupal source database configured - there is nothing to generate.
+      return $this->derivatives;
+    }
+
+    try {
+      foreach ($node_types as $row) {
+        $node_type = $row->getSourceProperty('type');
+        $values = $base_plugin_definition;
+
+        $values['label'] = $this->t("@label (@type)", [
+          '@label' => $values['label'],
+          '@type' => $node_type,
+        ]);
+        $values['source']['node_type'] = $node_type;
+        $values['destination']['default_bundle'] = $node_type;
+
+        // If this migration is based on the d6_node_revision migration or
+        // is for translations of nodes, it should explicitly depend on the
+        // corresponding d6_node variant.
+        if (in_array($base_plugin_definition['id'], ['d6_node_revision', 'd6_node_translation'])) {
+          $values['migration_dependencies']['required'][] = 'd6_node:' . $node_type;
+        }
+
+        /** @var \Drupal\migrate\Plugin\Migration $migration */
+        $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($values);
+        $this->fieldDiscovery->addBundleFieldProcesses($migration, 'node', $node_type);
+        $this->derivatives[$node_type] = $migration->getPluginDefinition();
+      }
+    }
+    catch (DatabaseExceptionWrapper $e) {
+      // Once we begin iterating the source plugin it is possible that the
+      // source tables will not exist. This can happen when the
+      // MigrationPluginManager gathers up the migration definitions but we do
+      // not actually have a Drupal 6 source database.
+    }
+
+    return $this->derivatives;
+  }
+
+}

core/modules/node/src/Plugin/migrate/D6NodeTranslation.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Drupal\node\Plugin\migrate;
+
+use Drupal\migrate\Plugin\Migration;
+use Drupal\migrate_drupal\Plugin\MigrationWithFollowUpInterface;
+
+/**
+ * Migration plugin for the Drupal 6 node translations.
+ */
+class D6NodeTranslation extends Migration implements MigrationWithFollowUpInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function generateFollowUpMigrations() {
+    $this->migrationPluginManager->clearCachedDefinitions();
+    return $this->migrationPluginManager->createInstances('d6_entity_reference_translation');
+  }
+
+}

core/modules/node/src/Plugin/migrate/D7NodeDeriver.php

@@ -0,0 +1,133 @@
+<?php
+
+namespace Drupal\node\Plugin\migrate;
+
+use Drupal\Component\Plugin\Derivative\DeriverBase;
+use Drupal\Core\Database\DatabaseExceptionWrapper;
+use Drupal\Core\Plugin\Discovery\ContainerDeriverInterface;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\migrate\Exception\RequirementsException;
+use Drupal\migrate\Plugin\MigrationDeriverTrait;
+use Drupal\migrate_drupal\FieldDiscoveryInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Deriver for Drupal 7 node and node revision migrations based on node types.
+ */
+class D7NodeDeriver extends DeriverBase implements ContainerDeriverInterface {
+  use MigrationDeriverTrait;
+  use StringTranslationTrait;
+
+  /**
+   * The base plugin ID this derivative is for.
+   *
+   * @var string
+   */
+  protected $basePluginId;
+
+  /**
+   * Whether or not to include translations.
+   *
+   * @var bool
+   */
+  protected $includeTranslations;
+
+  /**
+   * The migration field discovery service.
+   *
+   * @var \Drupal\migrate_drupal\FieldDiscoveryInterface
+   */
+  protected $fieldDiscovery;
+
+  /**
+   * D7NodeDeriver constructor.
+   *
+   * @param string $base_plugin_id
+   *   The base plugin ID for the plugin ID.
+   * @param bool $translations
+   *   Whether or not to include translations.
+   * @param \Drupal\migrate_drupal\FieldDiscoveryInterface $field_discovery
+   *   The migration field discovery service.
+   */
+  public function __construct($base_plugin_id, $translations, FieldDiscoveryInterface $field_discovery) {
+    $this->basePluginId = $base_plugin_id;
+    $this->includeTranslations = $translations;
+    $this->fieldDiscovery = $field_discovery;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, $base_plugin_id) {
+    // Translations don't make sense unless we have content_translation.
+    return new static(
+      $base_plugin_id,
+      $container->get('module_handler')->moduleExists('content_translation'),
+      $container->get('migrate_drupal.field_discovery')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDerivativeDefinitions($base_plugin_definition) {
+    if (in_array('translation', $base_plugin_definition['migration_tags']) && !$this->includeTranslations) {
+      // Refuse to generate anything.
+      return $this->derivatives;
+    }
+
+    $node_types = static::getSourcePlugin('d7_node_type');
+    try {
+      $node_types->checkRequirements();
+    }
+    catch (RequirementsException $e) {
+      // If the d7_node_type requirements failed, that means we do not have a
+      // Drupal source database configured - there is nothing to generate.
+      return $this->derivatives;
+    }
+
+    try {
+      foreach ($node_types as $row) {
+        $node_type = $row->getSourceProperty('type');
+        $values = $base_plugin_definition;
+
+        $values['label'] = $this->t('@label (@type)', [
+          '@label' => $values['label'],
+          '@type' => $row->getSourceProperty('name'),
+        ]);
+        $values['source']['node_type'] = $node_type;
+        $values['destination']['default_bundle'] = $node_type;
+
+        // Comment status must be mapped to correct comment type.
+        // Comment type migration creates a separate comment type for each
+        // node type except for Forum which uses 'comment_forum'.
+        $comment_type = 'comment_node_' . $node_type;
+        if ($node_type == 'forum') {
+          $comment_type = 'comment_forum';
+        }
+        $nested_key = $comment_type . '/0/status';
+        $values['process'][$nested_key] = 'comment';
+
+        // If this migration is based on the d7_node_revision migration or
+        // is for translations of nodes, it should explicitly depend on the
+        // corresponding d7_node variant.
+        if ($base_plugin_definition['id'] == ['d7_node_revision'] || in_array('translation', $base_plugin_definition['migration_tags'])) {
+          $values['migration_dependencies']['required'][] = 'd7_node:' . $node_type;
+        }
+
+        /** @var \Drupal\migrate\Plugin\MigrationInterface $migration */
+        $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($values);
+        $this->fieldDiscovery->addBundleFieldProcesses($migration, 'node', $node_type);
+        $this->derivatives[$node_type] = $migration->getPluginDefinition();
+      }
+    }
+    catch (DatabaseExceptionWrapper $e) {
+      // Once we begin iterating the source plugin it is possible that the
+      // source tables will not exist. This can happen when the
+      // MigrationPluginManager gathers up the migration definitions but we do
+      // not actually have a Drupal 7 source database.
+    }
+    return $this->derivatives;
+  }
+
+}

core/modules/node/src/Plugin/migrate/D7NodeTranslation.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Drupal\node\Plugin\migrate;
+
+use Drupal\migrate\Plugin\Migration;
+use Drupal\migrate_drupal\Plugin\MigrationWithFollowUpInterface;
+
+/**
+ * Migration plugin for the Drupal 7 node translations.
+ */
+class D7NodeTranslation extends Migration implements MigrationWithFollowUpInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function generateFollowUpMigrations() {
+    $this->migrationPluginManager->clearCachedDefinitions();
+    return $this->migrationPluginManager->createInstances('d7_entity_reference_translation');
+  }
+
+}

core/modules/node/src/Plugin/migrate/destination/EntityNodeType.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Drupal\node\Plugin\migrate\destination;
+
+use Drupal\migrate\Attribute\MigrateDestination;
+use Drupal\migrate\Plugin\migrate\destination\EntityConfigBase;
+use Drupal\migrate\Row;
+
+/**
+ * Migration destination for node type entity.
+ */
+#[MigrateDestination('entity:node_type')]
+class EntityNodeType extends EntityConfigBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getEntity(Row $row, array $old_destination_id_values) {
+    /** @var \Drupal\node\NodeTypeInterface $node_type */
+    $node_type = parent::getEntity($row, $old_destination_id_values);
+
+    // Config schema does not allow description or help text to be empty.
+    if ($node_type->getDescription() === '') {
+      $node_type->set('description', NULL);
+    }
+    if ($node_type->getHelp() === '') {
+      $node_type->set('help', NULL);
+    }
+    return $node_type;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function import(Row $row, array $old_destination_id_values = []) {
+    $entity_ids = parent::import($row, $old_destination_id_values);
+    if ($row->getDestinationProperty('create_body')) {
+      $node_type = $this->storage->load(reset($entity_ids));
+      node_add_body_field($node_type, $row->getDestinationProperty('create_body_label'));
+    }
+    return $entity_ids;
+  }
+
+}

core/modules/node/src/Plugin/migrate/process/d6/NodeUpdate7008.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Drupal\node\Plugin\migrate\process\d6;
+
+use Drupal\migrate\Attribute\MigrateProcess;
+use Drupal\migrate\MigrateExecutableInterface;
+use Drupal\migrate\ProcessPluginBase;
+use Drupal\migrate\Row;
+
+/**
+ * Split the 'administer nodes' permission from 'access content overview'.
+ */
+#[MigrateProcess('node_update_7008')]
+class NodeUpdate7008 extends ProcessPluginBase {
+
+  /**
+   * {@inheritdoc}
+   *
+   * Split the 'administer nodes' permission from 'access content overview'.
+   */
+  public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
+    if ($value === 'administer nodes') {
+      return [$value, 'access content overview'];
+    }
+    return $value;
+  }
+
+}