diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index be8c695..ca7bc62 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -1953,39 +1953,25 @@ function module_implements($hook) {
 /**
  * Invokes a hook in a particular module.
  *
- * All arguments are passed by value. Use drupal_alter() if you need to pass
- * arguments by reference.
- *
  * @deprecated as of Drupal 8.0. Use
- *   \Drupal::moduleHandler()->invoke($module, $hook, $args = array()).
+ *   \Drupal::moduleHandler()->invoke($module, $hook).
  *
- * @see drupal_alter()
  * @see \Drupal\Core\Extension\ModuleHandler::invoke()
  */
-function module_invoke($module, $hook) {
-  $args = func_get_args();
-  // Remove $module and $hook from the arguments.
-  unset($args[0], $args[1]);
-  return \Drupal::moduleHandler()->invoke($module, $hook, $args);
+function module_invoke($module, $hook, $context1 = NULL, $context2 = NULL, $context3 = NULL, $context4 = NULL) {
+  return \Drupal::moduleHandler()->invoke($module, $hook, $context1, $context2, $context3, $context4);
 }
 
 /**
  * Invokes a hook in all enabled modules that implement it.
  *
- * All arguments are passed by value. Use drupal_alter() if you need to pass
- * arguments by reference.
- *
  * @deprecated as of Drupal 8.0. Use
  *   \Drupal::moduleHandler()->invokeAll($hook).
  *
- * @see drupal_alter()
  * @see \Drupal\Core\Extension\ModuleHandler::invokeAll()
  */
-function module_invoke_all($hook) {
-  $args = func_get_args();
-  // Remove $hook from the arguments.
-  array_shift($args);
-  return \Drupal::moduleHandler()->invokeAll($hook, $args);
+function module_invoke_all($hook, $context1 = NULL, $context2 = NULL, $context3 = NULL, $context4 = NULL) {
+  return \Drupal::moduleHandler()->invokeAll($hook, $context1, $context2, $context3, $context4);
 }
 
 /**
diff --git a/core/includes/entity.inc b/core/includes/entity.inc
index 98acf56..49178e8 100644
--- a/core/includes/entity.inc
+++ b/core/includes/entity.inc
@@ -104,7 +104,7 @@ function entity_invoke_bundle_hook($hook, $entity_type, $bundle, $bundle_new = N
     $storage_controller->$method($bundle, $bundle_new);
   }
   // Invoke hook_entity_bundle_*() hooks.
-  \Drupal::moduleHandler()->invokeAll('entity_bundle_' . $hook, array($entity_type, $bundle, $bundle_new));
+  \Drupal::moduleHandler()->invokeAll('entity_bundle_' . $hook, $entity_type, $bundle, $bundle_new);
 }
 
 /**
diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index 144882b..c635ca6 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -620,7 +620,7 @@ function theme($hook, $variables = array()) {
   }
 
   // Invoke hook_theme_suggestions_HOOK().
-  $suggestions = Drupal::moduleHandler()->invokeAll('theme_suggestions_' . $base_theme_hook, array($variables));
+  $suggestions = Drupal::moduleHandler()->invokeAll('theme_suggestions_' . $base_theme_hook, $variables);
   // If theme() was invoked with a direct theme suggestion like
   // '#theme' => 'node__article', add it to the suggestions array before
   // invoking suggestion alter hooks.
diff --git a/core/includes/update.inc b/core/includes/update.inc
index f185036..f55750e 100644
--- a/core/includes/update.inc
+++ b/core/includes/update.inc
@@ -138,7 +138,7 @@ function update_system_schema_requirements() {
  */
 function update_check_requirements($skip_warnings = FALSE) {
   // Check requirements of all loaded modules.
-  $requirements = \Drupal::moduleHandler()->invokeAll('requirements', array('update'));
+  $requirements = \Drupal::moduleHandler()->invokeAll('requirements', 'update');
   $requirements += update_system_schema_requirements();
   $requirements += update_settings_file_requirements();
   $severity = drupal_requirements_severity($requirements);
diff --git a/core/lib/Drupal/Core/Entity/EntityAccessController.php b/core/lib/Drupal/Core/Entity/EntityAccessController.php
index 4873292..89b99f7 100644
--- a/core/lib/Drupal/Core/Entity/EntityAccessController.php
+++ b/core/lib/Drupal/Core/Entity/EntityAccessController.php
@@ -72,8 +72,8 @@ public function access(EntityInterface $entity, $operation, $langcode = Language
     // - No modules say to deny access.
     // - At least one module says to grant access.
     $access = array_merge(
-      $this->moduleHandler()->invokeAll('entity_access', array($entity, $operation, $account, $langcode)),
-      $this->moduleHandler()->invokeAll($entity->getEntityTypeId() . '_access', array($entity, $operation, $account, $langcode))
+      $this->moduleHandler()->invokeAll('entity_access', $entity, $operation, $account, $langcode),
+      $this->moduleHandler()->invokeAll($entity->getEntityTypeId() . '_access', $entity, $operation, $account, $langcode)
     );
 
     if (($return = $this->processAccessHookResults($access)) === NULL) {
@@ -219,8 +219,8 @@ public function createAccess($entity_bundle = NULL, AccountInterface $account =
     // - No modules say to deny access.
     // - At least one module says to grant access.
     $access = array_merge(
-      $this->moduleHandler()->invokeAll('entity_create_access', array($account, $context['langcode'])),
-      $this->moduleHandler()->invokeAll($this->entityTypeId . '_create_access', array($account, $context['langcode']))
+      $this->moduleHandler()->invokeAll('entity_create_access', $account, $context['langcode']),
+      $this->moduleHandler()->invokeAll($this->entityTypeId . '_create_access', $account, $context['langcode'])
     );
 
     if (($return = $this->processAccessHookResults($access)) === NULL) {
@@ -288,7 +288,7 @@ public function fieldAccess($operation, FieldDefinitionInterface $field_definiti
     $grants = array(':default' => $default);
     $hook_implementations = $this->moduleHandler()->getImplementations('entity_field_access');
     foreach ($hook_implementations as $module) {
-      $grants = array_merge($grants, array($module => $this->moduleHandler()->invoke($module, 'entity_field_access', array($operation, $field_definition, $account, $items))));
+      $grants = array_merge($grants, array($module => $this->moduleHandler()->invoke($module, 'entity_field_access', $operation, $field_definition, $account, $items)));
     }
 
     // Also allow modules to alter the returned grants/denies.
diff --git a/core/lib/Drupal/Core/Entity/EntityFormController.php b/core/lib/Drupal/Core/Entity/EntityFormController.php
index 342d395..14484e5 100644
--- a/core/lib/Drupal/Core/Entity/EntityFormController.php
+++ b/core/lib/Drupal/Core/Entity/EntityFormController.php
@@ -411,12 +411,9 @@ protected function prepareInvokeAll($hook, array &$form_state) {
     $implementations = $this->moduleHandler->getImplementations($hook);
     foreach ($implementations as $module) {
       $function = $module . '_' . $hook;
-      if (function_exists($function)) {
-        // Ensure we pass an updated translation object and form display at
-        // each invocation, since they depend on form state which is alterable.
-        $args = array($this->entity, $this->getFormDisplay($form_state), $this->operation, &$form_state);
-        call_user_func_array($function, $args);
-      }
+      // Ensure to pass an updated form display at each invocation, since it
+      // depends on form state which is alterable.
+      $function($this->entity, $this->getFormDisplay($form_state), $this->operation, $form_state);
     }
   }
 
diff --git a/core/lib/Drupal/Core/Entity/EntityManager.php b/core/lib/Drupal/Core/Entity/EntityManager.php
index 8f7e929..06e7717 100644
--- a/core/lib/Drupal/Core/Entity/EntityManager.php
+++ b/core/lib/Drupal/Core/Entity/EntityManager.php
@@ -337,7 +337,7 @@ public function getFieldDefinitions($entity_type, $bundle = NULL) {
         // Invoke hooks.
         $result = $this->moduleHandler->invokeAll($entity_type . '_field_info');
         $this->entityFieldInfo[$entity_type] = NestedArray::mergeDeep($this->entityFieldInfo[$entity_type], $result);
-        $result = $this->moduleHandler->invokeAll('entity_field_info', array($entity_type));
+        $result = $this->moduleHandler->invokeAll('entity_field_info', $entity_type);
         $this->entityFieldInfo[$entity_type] = NestedArray::mergeDeep($this->entityFieldInfo[$entity_type], $result);
 
         // Automatically set the field name for non-configurable fields.
diff --git a/core/lib/Drupal/Core/Entity/EntityStorageControllerBase.php b/core/lib/Drupal/Core/Entity/EntityStorageControllerBase.php
index 5427501..858b4a9 100644
--- a/core/lib/Drupal/Core/Entity/EntityStorageControllerBase.php
+++ b/core/lib/Drupal/Core/Entity/EntityStorageControllerBase.php
@@ -148,9 +148,9 @@ protected function cacheSet($entities) {
    */
   protected function invokeHook($hook, EntityInterface $entity) {
     // Invoke the hook.
-    $this->moduleHandler()->invokeAll($this->entityTypeId . '_' . $hook, array($entity));
+    $this->moduleHandler()->invokeAll($this->entityTypeId . '_' . $hook, $entity);
     // Invoke the respective entity-level hook.
-    $this->moduleHandler()->invokeAll('entity_' . $hook, array($entity, $this->entityTypeId));
+    $this->moduleHandler()->invokeAll('entity_' . $hook, $entity, $this->entityTypeId);
   }
 
   /**
diff --git a/core/lib/Drupal/Core/Extension/ModuleHandler.php b/core/lib/Drupal/Core/Extension/ModuleHandler.php
index ef7b5e7..7893662 100644
--- a/core/lib/Drupal/Core/Extension/ModuleHandler.php
+++ b/core/lib/Drupal/Core/Extension/ModuleHandler.php
@@ -264,33 +264,30 @@ public function implementsHook($module, $hook) {
   /**
    * Implements \Drupal\Core\Extension\ModuleHandlerInterface::invoke().
    */
-  public function invoke($module, $hook, array $args = array()) {
+  public function invoke($module, $hook, $context1 = NULL, $context2 = NULL, $context3 = NULL, $context4 = NULL) {
     if (!$this->implementsHook($module, $hook)) {
       return;
     }
     $function = $module . '_' . $hook;
-    return call_user_func_array($function, $args);
+    return $function($context1, $context2, $context3, $context4);
   }
 
   /**
    * Implements \Drupal\Core\Extension\ModuleHandlerInterface::invokeAll().
    */
-  public function invokeAll($hook, array $args = array()) {
+  public function invokeAll($hook, $context1 = NULL, $context2 = NULL, $context3 = NULL, $context4 = NULL) {
     $return = array();
     $implementations = $this->getImplementations($hook);
     foreach ($implementations as $module) {
       $function = $module . '_' . $hook;
-      if (function_exists($function)) {
-        $result = call_user_func_array($function, $args);
-        if (isset($result) && is_array($result)) {
-          $return = NestedArray::mergeDeep($return, $result);
-        }
-        elseif (isset($result)) {
-          $return[] = $result;
-        }
+      $result = $function($context1, $context2, $context3, $context4);
+      if (isset($result) && is_array($result)) {
+        $return = NestedArray::mergeDeep($return, $result);
+      }
+      elseif (isset($result)) {
+        $return[] = $result;
       }
     }
-
     return $return;
   }
 
@@ -619,7 +616,7 @@ public function install(array $module_list, $enable_dependencies = TRUE) {
         drupal_theme_rebuild();
 
         // Allow modules to react prior to the installation of a module.
-        $this->invokeAll('module_preinstall', array($module));
+        $this->invokeAll('module_preinstall', $module);
 
         // Clear the entity info cache before importing new configuration.
         entity_info_cache_clear();
@@ -658,7 +655,7 @@ public function install(array $module_list, $enable_dependencies = TRUE) {
 
     // If any modules were newly installed, invoke hook_modules_installed().
     if (!empty($modules_installed)) {
-      $this->invokeAll('modules_installed', array($modules_installed));
+      $this->invokeAll('modules_installed', $modules_installed);
     }
 
     return TRUE;
@@ -719,7 +716,7 @@ public function uninstall(array $module_list, $uninstall_dependents = TRUE) {
     $schema_store = \Drupal::keyValue('system.schema');
     foreach ($module_list as $module) {
       // Allow modules to react prior to the uninstallation of a module.
-      $this->invokeAll('module_preuninstall', array($module));
+      $this->invokeAll('module_preuninstall', $module);
 
       // Uninstall the module.
       module_load_install($module);
@@ -763,7 +760,7 @@ public function uninstall(array $module_list, $uninstall_dependents = TRUE) {
     drupal_get_installed_schema_version(NULL, TRUE);
 
     // Let other modules react.
-    $this->invokeAll('modules_uninstalled', array($module_list));
+    $this->invokeAll('modules_uninstalled', $module_list);
 
     drupal_flush_all_caches();
 
diff --git a/core/lib/Drupal/Core/Extension/ModuleHandlerInterface.php b/core/lib/Drupal/Core/Extension/ModuleHandlerInterface.php
index a74f9cd..c58691a 100644
--- a/core/lib/Drupal/Core/Extension/ModuleHandlerInterface.php
+++ b/core/lib/Drupal/Core/Extension/ModuleHandlerInterface.php
@@ -179,27 +179,43 @@ public function implementsHook($module, $hook);
    *   The name of the module (without the .module extension).
    * @param string $hook
    *   The name of the hook to invoke.
-   * @param ...
-   *   Arguments to pass to the hook implementation.
+   * @param mixed $context1
+   *   (optional) A variable to pass to the implementation.
+   * @param mixed $context2
+   *   (optional) An additional variable to pass to the implementation.
+   * @param mixed $context3
+   *   (optional) An additional variable to pass to the implementation.
+   * @param mixed $context4
+   *   (optional) An additional variable to pass to the implementation. If more
+   *   context needs to be provided to implementations, then this should be an
+   *   associative array.
    *
    * @return mixed
    *   The return value of the hook implementation.
    */
-  public function invoke($module, $hook, array $args = array());
+  public function invoke($module, $hook, $context1 = NULL, $context2 = NULL, $context3 = NULL, $context4 = NULL);
 
   /**
    * Invokes a hook in all enabled modules that implement it.
    *
    * @param string $hook
    *   The name of the hook to invoke.
-   * @param array $args
-   *   Arguments to pass to the hook.
+   * @param mixed $context1
+   *   (optional) A variable to pass to the implementation.
+   * @param mixed $context2
+   *   (optional) An additional variable to pass to the implementation.
+   * @param mixed $context3
+   *   (optional) An additional variable to pass to the implementation.
+   * @param mixed $context4
+   *   (optional) An additional variable to pass to the implementation. If more
+   *   context needs to be provided to implementations, then this should be an
+   *   associative array.
    *
    * @return array
    *   An array of return values of the hook implementations. If modules return
    *   arrays from their implementations, those are merged into one array.
    */
-  public function invokeAll($hook, array $args = array());
+  public function invokeAll($hook, $context1 = NULL, $context2 = NULL, $context3 = NULL, $context4 = NULL);
 
   /**
    * Passes alterable variables to specific hook_TYPE_alter() implementations.
diff --git a/core/lib/Drupal/Core/Extension/ThemeHandler.php b/core/lib/Drupal/Core/Extension/ThemeHandler.php
index 7c71eba..aac83a2 100644
--- a/core/lib/Drupal/Core/Extension/ThemeHandler.php
+++ b/core/lib/Drupal/Core/Extension/ThemeHandler.php
@@ -153,7 +153,7 @@ public function enable(array $theme_list) {
     $this->resetSystem();
 
     // Invoke hook_themes_enabled() after the themes have been enabled.
-    $this->moduleHandler->invokeAll('themes_enabled', array($theme_list));
+    $this->moduleHandler->invokeAll('themes_enabled', $theme_list);
   }
 
   /**
@@ -184,7 +184,7 @@ public function disable(array $theme_list) {
     $this->resetSystem();
 
     // Invoke hook_themes_disabled after the themes have been disabled.
-    $this->moduleHandler->invokeAll('themes_disabled', array($theme_list));
+    $this->moduleHandler->invokeAll('themes_disabled', $theme_list);
   }
 
   /**
diff --git a/core/lib/Drupal/Core/Form/FormBuilder.php b/core/lib/Drupal/Core/Form/FormBuilder.php
index 43d15a6..6020589 100644
--- a/core/lib/Drupal/Core/Form/FormBuilder.php
+++ b/core/lib/Drupal/Core/Form/FormBuilder.php
@@ -510,7 +510,7 @@ public function retrieveForm($form_id, &$form_state) {
       // So, we call the hook if $this->forms isn't yet populated, OR if it
       // doesn't yet have an entry for the requested form_id.
       if (!isset($this->forms) || !isset($this->forms[$form_id])) {
-        $this->forms = $this->moduleHandler->invokeAll('forms', array($form_id, $args));
+        $this->forms = $this->moduleHandler->invokeAll('forms', $form_id, $args);
       }
       $form_definition = $this->forms[$form_id];
       if (isset($form_definition['callback arguments'])) {
diff --git a/core/lib/Drupal/Core/Utility/Token.php b/core/lib/Drupal/Core/Utility/Token.php
index 29fef78..1e0529c 100644
--- a/core/lib/Drupal/Core/Utility/Token.php
+++ b/core/lib/Drupal/Core/Utility/Token.php
@@ -213,7 +213,7 @@ public function scan($text) {
    */
   public function generate($type, array $tokens, array $data = array(), array $options = array()) {
     $options += array('sanitize' => TRUE);
-    $replacements = $this->moduleHandler->invokeAll('tokens', array($type, $tokens, $data, $options));
+    $replacements = $this->moduleHandler->invokeAll('tokens', $type, $tokens, $data, $options);
 
     // Allow other modules to alter the replacements.
     $context = array(
diff --git a/core/modules/comment/lib/Drupal/comment/Form/CommentAdminOverview.php b/core/modules/comment/lib/Drupal/comment/Form/CommentAdminOverview.php
index ebd2623..cbd641b 100644
--- a/core/modules/comment/lib/Drupal/comment/Form/CommentAdminOverview.php
+++ b/core/modules/comment/lib/Drupal/comment/Form/CommentAdminOverview.php
@@ -240,7 +240,7 @@ public function buildForm(array $form, array &$form_state, $type = 'new') {
         'options' => $comment_uri['options'],
         'query' => $destination,
       );
-      if ($this->moduleHandler->invoke('content_translation', 'translate_access', array($comment))) {
+      if ($this->moduleHandler->invoke('content_translation', 'translate_access', $comment)) {
         $links['translate'] = array(
           'title' => $this->t('translate'),
           'route_name' => 'content_translation.translation_overview_comment',
diff --git a/core/modules/edit/lib/Drupal/edit/EditController.php b/core/modules/edit/lib/Drupal/edit/EditController.php
index d7c8386..cee57e7 100644
--- a/core/modules/edit/lib/Drupal/edit/EditController.php
+++ b/core/modules/edit/lib/Drupal/edit/EditController.php
@@ -323,8 +323,7 @@ public function renderField(EntityInterface $entity, $field_name, $langcode, $vi
       // by a dash; the first part must be the module name.
       $mode_id_parts = explode('-', $view_mode_id, 2);
       $module = reset($mode_id_parts);
-      $args = array($entity, $field_name, $view_mode_id, $langcode);
-      $output = $this->moduleHandler->invoke($module, 'edit_render_field', $args);
+      $output = $this->moduleHandler->invoke($module, 'edit_render_field', $entity, $field_name, $view_mode_id, $langcode);
     }
 
     return drupal_render($output);
diff --git a/core/modules/field/field.purge.inc b/core/modules/field/field.purge.inc
index cd8cd04..7aef0b9 100644
--- a/core/modules/field/field.purge.inc
+++ b/core/modules/field/field.purge.inc
@@ -150,7 +150,7 @@ function field_purge_instance($instance) {
   field_info_cache_clear();
 
   // Invoke external hooks after the cache is cleared for API consistency.
-  \Drupal::moduleHandler()->invokeAll('field_purge_instance', array($instance));
+  \Drupal::moduleHandler()->invokeAll('field_purge_instance', $instance);
 }
 
 /**
@@ -180,7 +180,7 @@ function field_purge_field($field) {
   field_info_cache_clear();
 
   // Invoke external hooks after the cache is cleared for API consistency.
-  \Drupal::moduleHandler()->invokeAll('field_purge_field', array($field));
+  \Drupal::moduleHandler()->invokeAll('field_purge_field', $field);
 }
 
 /**
diff --git a/core/modules/field/field.views.inc b/core/modules/field/field.views.inc
index 172aee4..96007f5 100644
--- a/core/modules/field/field.views.inc
+++ b/core/modules/field/field.views.inc
@@ -22,7 +22,7 @@ function field_views_data() {
 
   foreach (field_info_fields() as $field) {
     if (_field_views_is_sql_entity_type($field)) {
-      $result = (array) $module_handler->invoke($field->module, 'field_views_data', array($field));
+      $result = (array) $module_handler->invoke($field->module, 'field_views_data', $field);
       if (empty($result)) {
         $result = field_views_field_default_views_data($field);
       }
diff --git a/core/modules/field/lib/Drupal/field/Entity/Field.php b/core/modules/field/lib/Drupal/field/Entity/Field.php
index 3e5a63f..110f085 100644
--- a/core/modules/field/lib/Drupal/field/Entity/Field.php
+++ b/core/modules/field/lib/Drupal/field/Entity/Field.php
@@ -365,7 +365,7 @@ protected function preSaveUpdated(EntityStorageControllerInterface $storage_cont
 
     // See if any module forbids the update by throwing an exception. This
     // invokes hook_field_update_forbid().
-    $module_handler->invokeAll('field_update_forbid', array($this, $this->original));
+    $module_handler->invokeAll('field_update_forbid', $this, $this->original);
 
     // Notify the storage controller. The controller can reject the definition
     // update as invalid by raising an exception, which stops execution before
diff --git a/core/modules/file/file.module b/core/modules/file/file.module
index 892b214..d73ff83 100644
--- a/core/modules/file/file.module
+++ b/core/modules/file/file.module
@@ -189,7 +189,7 @@ function file_copy(File $source, $destination = NULL, $replace = FILE_EXISTS_REN
     $file->save();
 
     // Inform modules that the file has been copied.
-    \Drupal::moduleHandler()->invokeAll('file_copy', array($file, $source));
+    \Drupal::moduleHandler()->invokeAll('file_copy', $file, $source);
 
     return $file;
   }
@@ -264,7 +264,7 @@ function file_move(File $source, $destination = NULL, $replace = FILE_EXISTS_REN
     $file->save();
 
     // Inform modules that the file has been moved.
-    \Drupal::moduleHandler()->invokeAll('file_move', array($file, $source));
+    \Drupal::moduleHandler()->invokeAll('file_move', $file, $source);
 
     // Delete the original if it's not in use elsewhere.
     if ($delete_source && !\Drupal::service('file.usage')->listUsage($source)) {
@@ -308,7 +308,7 @@ function file_validate(File $file, $validators = array()) {
   }
 
   // Let other modules perform validation on the new file.
-  return array_merge($errors, \Drupal::moduleHandler()->invokeAll('file_validate', array($file)));
+  return array_merge($errors, \Drupal::moduleHandler()->invokeAll('file_validate', $file));
 }
 
 /**
diff --git a/core/modules/help/lib/Drupal/help/Controller/HelpController.php b/core/modules/help/lib/Drupal/help/Controller/HelpController.php
index 7aac826..d5a0e06 100644
--- a/core/modules/help/lib/Drupal/help/Controller/HelpController.php
+++ b/core/modules/help/lib/Drupal/help/Controller/HelpController.php
@@ -69,7 +69,7 @@ protected function helpLinksAsList() {
 
     $modules = array();
     foreach ($this->moduleHandler->getImplementations('help') as $module) {
-      if ($this->moduleHandler->invoke($module, 'help', array("admin/help#$module", $empty_arg))) {
+      if ($this->moduleHandler->invoke($module, 'help', "admin/help#$module", $empty_arg)) {
         $modules[$module] = $module_info[$module]->info['name'];
       }
     }
@@ -109,7 +109,7 @@ public function helpPage($name) {
       $info = system_get_info('module');
       $build['#title'] = String::checkPlain($info[$name]['name']);
 
-      $temp = $this->moduleHandler->invoke($name, 'help', array("admin/help#$name", drupal_help_arg()));
+      $temp = $this->moduleHandler->invoke($name, 'help', "admin/help#$name", drupal_help_arg());
       if (empty($temp)) {
         $build['top']['#markup'] = t('No help is available for module %module.', array('%module' => $info[$name]['name']));
       }
diff --git a/core/modules/image/image.module b/core/modules/image/image.module
index 3751b8c..ff212cb 100644
--- a/core/modules/image/image.module
+++ b/core/modules/image/image.module
@@ -239,7 +239,7 @@ function image_file_download($uri) {
     $image = \Drupal::service('image.factory')->get($uri);
     if ($image->isSupported()) {
       // Check the permissions of the original to grant access to this image.
-      $headers = \Drupal::moduleHandler()->invokeAll('file_download', array($original_uri));
+      $headers = \Drupal::moduleHandler()->invokeAll('file_download', $original_uri);
       // Confirm there's at least one module granting access and none denying access.
       if (!empty($headers) && !in_array(-1, $headers)) {
         return array(
diff --git a/core/modules/image/lib/Drupal/image/Controller/ImageStyleDownloadController.php b/core/modules/image/lib/Drupal/image/Controller/ImageStyleDownloadController.php
index 3c619ff..500063e 100644
--- a/core/modules/image/lib/Drupal/image/Controller/ImageStyleDownloadController.php
+++ b/core/modules/image/lib/Drupal/image/Controller/ImageStyleDownloadController.php
@@ -110,7 +110,7 @@ public function deliver(Request $request, $scheme, ImageStyleInterface $image_st
         return parent::download($request, $scheme);
       }
       else {
-        $headers = $this->moduleHandler()->invokeAll('file_download', array($image_uri));
+        $headers = $this->moduleHandler()->invokeAll('file_download', $image_uri);
         if (in_array(-1, $headers) || empty($headers)) {
           throw new AccessDeniedHttpException();
         }
diff --git a/core/modules/image/lib/Drupal/image/Entity/ImageStyle.php b/core/modules/image/lib/Drupal/image/Entity/ImageStyle.php
index 506f660..4db4006 100644
--- a/core/modules/image/lib/Drupal/image/Entity/ImageStyle.php
+++ b/core/modules/image/lib/Drupal/image/Entity/ImageStyle.php
@@ -255,7 +255,7 @@ public function flush($path = NULL) {
 
     // Let other modules update as necessary on flush.
     $module_handler = \Drupal::moduleHandler();
-    $module_handler->invokeAll('image_style_flush', array($this));
+    $module_handler->invokeAll('image_style_flush', $this);
 
     // Clear field caches so that formatters may be added for this style.
     field_info_cache_clear();
diff --git a/core/modules/language/language.module b/core/modules/language/language.module
index 8d0faab..a81a173 100644
--- a/core/modules/language/language.module
+++ b/core/modules/language/language.module
@@ -471,7 +471,7 @@ function language_save($language) {
   $language->is_new = $language_entity->isNew();
 
   // Let other modules modify $language before saved.
-  \Drupal::moduleHandler()->invokeAll('language_presave', array($language));
+  \Drupal::moduleHandler()->invokeAll('language_presave', $language);
 
   // Assign language properties to language entity.
   $language_entity->label = isset($language->name) ? $language->name : '';
@@ -484,11 +484,11 @@ function language_save($language) {
   $language_entity->save();
   $t_args = array('%language' => $language->name, '%langcode' => $language->id);
   if ($language->is_new) {
-    \Drupal::moduleHandler()->invokeAll('language_insert', array($language));
+    \Drupal::moduleHandler()->invokeAll('language_insert', $language);
     watchdog('language', 'The %language (%langcode) language has been created.', $t_args);
   }
   else {
-    \Drupal::moduleHandler()->invokeAll('language_update', array($language));
+    \Drupal::moduleHandler()->invokeAll('language_update', $language);
     watchdog('language', 'The %language (%langcode) language has been updated.', $t_args);
   }
 
@@ -532,7 +532,7 @@ function language_delete($langcode) {
   if (isset($languages[$langcode]) && !$languages[$langcode]->locked) {
     $language = $languages[$langcode];
 
-    \Drupal::moduleHandler()->invokeAll('language_delete', array($language));
+    \Drupal::moduleHandler()->invokeAll('language_delete', $language);
 
     // Remove the language.
     entity_delete_multiple('language_entity', array($language->id));
diff --git a/core/modules/migrate/lib/Drupal/migrate/Plugin/migrate/source/SourcePluginBase.php b/core/modules/migrate/lib/Drupal/migrate/Plugin/migrate/source/SourcePluginBase.php
index 0efc013..78eb2fa 100644
--- a/core/modules/migrate/lib/Drupal/migrate/Plugin/migrate/source/SourcePluginBase.php
+++ b/core/modules/migrate/lib/Drupal/migrate/Plugin/migrate/source/SourcePluginBase.php
@@ -46,8 +46,8 @@ protected function getModuleHandler() {
    * {@inheritdoc}
    */
   public function prepareRow(Row $row) {
-    $this->getModuleHandler()->invokeAll('migrate_prepare_row', array($row, $this, $this->migration));
-    $this->getModuleHandler()->invokeAll('migrate_ '. $this->migration->id() . '_prepare_row', array($row, $this, $this->migration));
+    $this->getModuleHandler()->invokeAll('migrate_prepare_row', $row, $this, $this->migration);
+    $this->getModuleHandler()->invokeAll('migrate_ '. $this->migration->id() . '_prepare_row', $row, $this, $this->migration);
     return TRUE;
   }
 
diff --git a/core/modules/node/lib/Drupal/node/Controller/NodeController.php b/core/modules/node/lib/Drupal/node/Controller/NodeController.php
index 4d62d12..5901dbe 100644
--- a/core/modules/node/lib/Drupal/node/Controller/NodeController.php
+++ b/core/modules/node/lib/Drupal/node/Controller/NodeController.php
@@ -63,7 +63,7 @@ public function addPage() {
    */
   public function add(NodeTypeInterface $node_type) {
     $account = $this->currentUser();
-    $langcode = $this->moduleHandler()->invoke('language', 'get_default_langcode', array('node', $node_type->type));
+    $langcode = $this->moduleHandler()->invoke('language', 'get_default_langcode', 'node', $node_type->type);
 
     $node = $this->entityManager()->getStorageController('node')->create(array(
       'uid' => $account->id(),
diff --git a/core/modules/node/lib/Drupal/node/NodeAccessController.php b/core/modules/node/lib/Drupal/node/NodeAccessController.php
index a069854..0d7940a1 100644
--- a/core/modules/node/lib/Drupal/node/NodeAccessController.php
+++ b/core/modules/node/lib/Drupal/node/NodeAccessController.php
@@ -127,7 +127,7 @@ protected function checkCreateAccess(AccountInterface $account, array $context,
    * {@inheritdoc}
    */
   public function acquireGrants(NodeInterface $node) {
-    $grants = $this->moduleHandler->invokeAll('node_access_records', array($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.
diff --git a/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php b/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php
index 8a7e30a..82dc819 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php
@@ -238,9 +238,9 @@ public function execute() {
       $node->rendered = drupal_render($build);
 
       // Fetch comment count for snippet.
-      $node->rendered .= ' ' . $this->moduleHandler->invoke('comment', 'node_update_index', array($node, $item->langcode));
+      $node->rendered .= ' ' . $this->moduleHandler->invoke('comment', 'node_update_index', $node, $item->langcode);
 
-      $extra = $this->moduleHandler->invokeAll('node_search_result', array($node, $item->langcode));
+      $extra = $this->moduleHandler->invokeAll('node_search_result', $node, $item->langcode);
 
       $language = language_load($item->langcode);
       $username = array(
@@ -337,7 +337,7 @@ protected function indexNode(EntityInterface $node) {
       $text = '<h1>' . check_plain($node->label($language->id)) . '</h1>' . $node->rendered;
 
       // Fetch extra data normally not visible.
-      $extra = $this->moduleHandler->invokeAll('node_update_index', array($node, $language->id));
+      $extra = $this->moduleHandler->invokeAll('node_update_index', $node, $language->id);
       foreach ($extra as $t) {
         $text .= $t;
       }
diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index bf79da6..286abf6 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -1539,7 +1539,7 @@ function node_access_grants($op, $account = NULL) {
   }
 
   // Fetch node access grants from other modules.
-  $grants = \Drupal::moduleHandler()->invokeAll('node_grants', array($account, $op));
+  $grants = \Drupal::moduleHandler()->invokeAll('node_grants', $account, $op);
   // Allow modules to alter the assigned grants.
   drupal_alter('node_grants', $grants, $account, $op);
 
diff --git a/core/modules/shortcut/shortcut.module b/core/modules/shortcut/shortcut.module
index a988cf4..05c72f2 100644
--- a/core/modules/shortcut/shortcut.module
+++ b/core/modules/shortcut/shortcut.module
@@ -277,7 +277,7 @@ function shortcut_default_set($account = NULL) {
   // have one, we allow the last module which returns a valid result to take
   // precedence. If no module returns a valid set, fall back on the site-wide
   // default, which is the lowest-numbered shortcut set.
-  $suggestions = array_reverse(\Drupal::moduleHandler()->invokeAll('shortcut_default_set', array($account)));
+  $suggestions = array_reverse(\Drupal::moduleHandler()->invokeAll('shortcut_default_set', $account));
   $suggestions[] = 'default';
   foreach ($suggestions as $name) {
     if ($shortcut_set = shortcut_set_load($name)) {
diff --git a/core/modules/simpletest/simpletest.module b/core/modules/simpletest/simpletest.module
index c6b53bf..e338bc2 100644
--- a/core/modules/simpletest/simpletest.module
+++ b/core/modules/simpletest/simpletest.module
@@ -310,7 +310,7 @@ function _simpletest_batch_operation($test_list_init, $test_id, &$context) {
   $size = count($test_list);
   $info = $test->getInfo();
 
-  \Drupal::moduleHandler()->invokeAll('test_finished', array($test->results));
+  \Drupal::moduleHandler()->invokeAll('test_finished', $test->results);
 
   // Gather results and compose the report.
   $test_results[$test_class] = $test->results;
diff --git a/core/modules/system/lib/Drupal/system/FileDownloadController.php b/core/modules/system/lib/Drupal/system/FileDownloadController.php
index a65342d..423d889 100644
--- a/core/modules/system/lib/Drupal/system/FileDownloadController.php
+++ b/core/modules/system/lib/Drupal/system/FileDownloadController.php
@@ -50,7 +50,7 @@ public function download(Request $request, $scheme = 'private') {
 
     if (file_stream_wrapper_valid_scheme($scheme) && file_exists($uri)) {
       // Let other modules provide headers and controls access to the file.
-      $headers = $this->moduleHandler()->invokeAll('file_download', array($uri));
+      $headers = $this->moduleHandler()->invokeAll('file_download', $uri);
 
       foreach ($headers as $result) {
         if ($result == -1) {
diff --git a/core/modules/system/lib/Drupal/system/Form/ModulesListForm.php b/core/modules/system/lib/Drupal/system/Form/ModulesListForm.php
index a090c67..29dbed0 100644
--- a/core/modules/system/lib/Drupal/system/Form/ModulesListForm.php
+++ b/core/modules/system/lib/Drupal/system/Form/ModulesListForm.php
@@ -174,7 +174,7 @@ protected function buildRow(array $modules, $module, $distribution) {
     // Generate link for module's help page, if there is one.
     $row['links']['help'] = array();
     if ($help && $module->status && in_array($module->name, $this->moduleHandler->getImplementations('help'))) {
-      if ($this->moduleHandler->invoke($module->name, 'help', array("admin/help#$module->name", $help))) {
+      if ($this->moduleHandler->invoke($module->name, 'help', "admin/help#$module->name", $help)) {
         $row['links']['help'] = array(
           '#type' => 'link',
           '#title' => $this->t('Help'),
diff --git a/core/modules/update/update.manager.inc b/core/modules/update/update.manager.inc
index 19c0dc1..1617ebe 100644
--- a/core/modules/update/update.manager.inc
+++ b/core/modules/update/update.manager.inc
@@ -830,7 +830,7 @@ function update_manager_archive_extract($file, $directory) {
  *   are no errors, it will be an empty array.
  */
 function update_manager_archive_verify($project, $archive_file, $directory) {
-  return \Drupal::moduleHandler()->invokeAll('verify_update_archive', array($project, $archive_file, $directory));
+  return \Drupal::moduleHandler()->invokeAll('verify_update_archive', $project, $archive_file, $directory);
 }
 
 /**
diff --git a/core/modules/user/user.module b/core/modules/user/user.module
index 6dc8139..bcae6e2 100644
--- a/core/modules/user/user.module
+++ b/core/modules/user/user.module
@@ -1023,7 +1023,7 @@ function user_login_finalize(UserInterface $account) {
   // or incorrectly does a redirect which would leave the old session in place.
   drupal_session_regenerate();
 
-  \Drupal::moduleHandler()->invokeAll('user_login', array($account));
+  \Drupal::moduleHandler()->invokeAll('user_login', $account);
 }
 
 /**
@@ -1160,7 +1160,7 @@ function user_cancel($edit, $uid, $method) {
   // should use those hooks to respond to the account deletion.
   if ($method != 'user_cancel_delete') {
     // Allow modules to add further sets to this batch.
-    \Drupal::moduleHandler()->invokeAll('user_cancel', array($edit, $account, $method));
+    \Drupal::moduleHandler()->invokeAll('user_cancel', $edit, $account, $method);
   }
 
   // Finish the batch and actually cancel the account.
@@ -1970,7 +1970,7 @@ function user_logout() {
 
   watchdog('user', 'Session closed for %name.', array('%name' => $user->getUsername()));
 
-  \Drupal::moduleHandler()->invokeAll('user_logout', array($user));
+  \Drupal::moduleHandler()->invokeAll('user_logout', $user);
 
   // Destroy the current session, and reset $user to the anonymous user.
   session_destroy();
diff --git a/core/modules/views/lib/Drupal/views/Analyzer.php b/core/modules/views/lib/Drupal/views/Analyzer.php
index 7a2999e..45c093f 100644
--- a/core/modules/views/lib/Drupal/views/Analyzer.php
+++ b/core/modules/views/lib/Drupal/views/Analyzer.php
@@ -50,7 +50,7 @@ public function __construct(ModuleHandlerInterface $module_handler) {
    */
   public function getMessages(ViewExecutable $view) {
     $view->initDisplay();
-    $messages = $this->moduleHandler->invokeAll('views_analyze', array($view));
+    $messages = $this->moduleHandler->invokeAll('views_analyze', $view);
 
     return $messages;
   }
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/query/Sql.php b/core/modules/views/lib/Drupal/views/Plugin/views/query/Sql.php
index 662282d..0a3ee9a 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/query/Sql.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/query/Sql.php
@@ -1306,7 +1306,7 @@ public function query($get_count = FALSE) {
     }
 
     // Add all query substitutions as metadata.
-    $query->addMetaData('views_substitutions', \Drupal::moduleHandler()->invokeAll('views_query_substitutions', array($this->view)));
+    $query->addMetaData('views_substitutions', \Drupal::moduleHandler()->invokeAll('views_query_substitutions', $this->view));
 
     return $query;
   }
@@ -1329,7 +1329,7 @@ public function getWhereArgs() {
    * Let modules modify the query just prior to finalizing it.
    */
   function alter(ViewExecutable $view) {
-    \Drupal::moduleHandler()->invokeAll('views_query_alter', array($view, $this));
+    \Drupal::moduleHandler()->invokeAll('views_query_alter', $view, $this);
   }
 
   /**
@@ -1384,7 +1384,7 @@ function execute(ViewExecutable $view) {
     }
 
     if ($query) {
-      $additional_arguments = \Drupal::moduleHandler()->invokeAll('views_query_substitutions', array($view));
+      $additional_arguments = \Drupal::moduleHandler()->invokeAll('views_query_substitutions', $view);
 
       // Count queries must be run through the preExecute() method.
       // If not, then hook_query_node_access_alter() may munge the count by
diff --git a/core/modules/views/lib/Drupal/views/Tests/ViewsHooksTest.php b/core/modules/views/lib/Drupal/views/Tests/ViewsHooksTest.php
index ad98fa6..0bbd85c 100644
--- a/core/modules/views/lib/Drupal/views/Tests/ViewsHooksTest.php
+++ b/core/modules/views/lib/Drupal/views/Tests/ViewsHooksTest.php
@@ -77,12 +77,12 @@ public function testHooks() {
 
       switch ($type) {
         case 'view':
-          $this->moduleHandler->invoke('views_test_data', $hook, array($view));
+          $this->moduleHandler->invoke('views_test_data', $hook, $view);
           break;
 
         case 'alter':
           $data = array();
-          $this->moduleHandler->invoke('views_test_data', $hook, array($data));
+          $this->moduleHandler->invoke('views_test_data', $hook, $data);
           break;
 
         default:
diff --git a/core/modules/views/lib/Drupal/views/ViewExecutable.php b/core/modules/views/lib/Drupal/views/ViewExecutable.php
index 88ebefc..8f83a92 100644
--- a/core/modules/views/lib/Drupal/views/ViewExecutable.php
+++ b/core/modules/views/lib/Drupal/views/ViewExecutable.php
@@ -1047,7 +1047,7 @@ public function build($display_id = NULL) {
 
     // Let modules modify the view just prior to building it.
     $module_handler = \Drupal::moduleHandler();
-    $module_handler->invokeAll('views_pre_build', array($this));
+    $module_handler->invokeAll('views_pre_build', $this);
 
     // Attempt to load from cache.
     // @todo Load a build_info from cache.
@@ -1168,7 +1168,7 @@ public function build($display_id = NULL) {
     $this->attachDisplays();
 
     // Let modules modify the view just after building it.
-    $module_handler->invokeAll('views_post_build', array($this));
+    $module_handler->invokeAll('views_post_build', $this);
 
     return TRUE;
   }
@@ -1243,7 +1243,7 @@ public function execute($display_id = NULL) {
 
     // Let modules modify the view just prior to executing it.
     $module_handler = \Drupal::moduleHandler();
-    $module_handler->invokeAll('views_pre_execute', array($this));
+    $module_handler->invokeAll('views_pre_execute', $this);
 
     // Check for already-cached results.
     if (!empty($this->live_preview)) {
@@ -1269,7 +1269,7 @@ public function execute($display_id = NULL) {
     }
 
     // Let modules modify the view just after executing it.
-    $module_handler->invokeAll('views_post_execute', array($this));
+    $module_handler->invokeAll('views_post_execute', $this);
 
     $this->executed = TRUE;
   }
@@ -1355,7 +1355,7 @@ public function render($display_id = NULL) {
       }
 
       // Let modules modify the view just prior to rendering it.
-      $module_handler->invokeAll('views_pre_render', array($this));
+      $module_handler->invokeAll('views_pre_render', $this);
 
       // Let the themes play too, because pre render is a very themey thing.
       if (isset($GLOBALS['base_theme_info']) && isset($GLOBALS['theme'])) {
@@ -1363,7 +1363,7 @@ public function render($display_id = NULL) {
           $module_handler->invoke($base, 'views_pre_render', array($this));
         }
 
-        $module_handler->invoke($GLOBALS['theme'], 'views_pre_render', array($this));
+        $module_handler->invoke($GLOBALS['theme'], 'views_pre_render', $this);
       }
 
       $this->display_handler->output = $this->display_handler->render();
@@ -1379,15 +1379,15 @@ public function render($display_id = NULL) {
     }
 
     // Let modules modify the view output after it is rendered.
-    $module_handler->invokeAll('views_post_render', array($this, &$this->display_handler->output, $cache));
+    $module_handler->invokeAll('views_post_render', $this, $this->display_handler->output, $cache);
 
     // Let the themes play too, because post render is a very themey thing.
     if (isset($GLOBALS['base_theme_info']) && isset($GLOBALS['theme'])) {
       foreach ($GLOBALS['base_theme_info'] as $base) {
-        $module_handler->invoke($base, 'views_post_render', array($this));
+        $module_handler->invoke($base, 'views_post_render', $this);
       }
 
-      $module_handler->invoke($GLOBALS['theme'], 'views_post_render', array($this));
+      $module_handler->invoke($GLOBALS['theme'], 'views_post_render', $this);
     }
 
     return $this->display_handler->output;
@@ -1465,7 +1465,7 @@ public function preExecute($args = array()) {
     }
 
     // Let modules modify the view just prior to executing it.
-    \Drupal::moduleHandler()->invokeAll('views_pre_view', array($this, $display_id, &$this->args));
+    \Drupal::moduleHandler()->invokeAll('views_pre_view', $this, $display_id, $this->args);
 
     // Allow hook_views_pre_view() to set the dom_id, then ensure it is set.
     $this->dom_id = !empty($this->dom_id) ? $this->dom_id : hash('sha256', $this->storage->id() . REQUEST_TIME . mt_rand());