diff -u b/core/modules/locale/locale.module b/core/modules/locale/locale.module
--- b/core/modules/locale/locale.module
+++ b/core/modules/locale/locale.module
@@ -418,7 +418,7 @@
         // Get translation status of the projects, download and update
         // translations.
         $options = _locale_translation_default_update_options();
-        $batch = locale_translation_batch_update_build($list, array(), $options);
+        $batch = locale_translation_batch_update_build($list, [], $options);
         batch_set($batch);
       }
     }
@@ -428,7 +428,7 @@
     // components. Do this even if import is not enabled because parsing new
     // configuration may expose new source strings.
     \Drupal::moduleHandler()->loadInclude('locale', 'bulk.inc');
-    if ($batch = locale_config_batch_update_components(array())) {
+    if ($batch = locale_config_batch_update_components([])) {
       batch_set($batch);
     }
   }
diff -u b/core/modules/locale/src/Tests/LocaleConfigTranslationTest.php b/core/modules/locale/src/Tests/LocaleConfigTranslationTest.php
--- b/core/modules/locale/src/Tests/LocaleConfigTranslationTest.php
+++ b/core/modules/locale/src/Tests/LocaleConfigTranslationTest.php
@@ -59,7 +59,7 @@
     );
     $this->drupalPostForm('admin/config/regional/language/add', $edit, t('Add custom language'));
     // Set path prefix.
-    $edit = array("prefix[$this->langcode]" => $this->langcode);
+    $edit = ["prefix[$this->langcode]" => $this->langcode];
     $this->drupalPostForm('admin/config/regional/language/detection/url', $edit, t('Save configuration'));
   }
 
@@ -134,7 +134,7 @@
     $this->assertTrue(isset($locations['configuration']) && isset($locations['configuration']['image.style.medium']), 'Configuration string has been created with the right location');
 
     // Check the string is unique and has no translation yet.
-    $translations = $this->storage->getTranslations(array('language' => $this->langcode, 'type' => 'configuration', 'name' => 'image.style.medium'));
+    $translations = $this->storage->getTranslations(['language' => $this->langcode, 'type' => 'configuration', 'name' => 'image.style.medium']);
     $this->assertEqual(count($translations), 1);
     $translation = reset($translations);
     $this->assertEqual($translation->source, $string->source);
@@ -156,7 +156,7 @@
     $this->drupalPostForm('admin/config/regional/translate', $edit, t('Save translations'));
 
     // Check the right single translation has been created.
-    $translations = $this->storage->getTranslations(array('language' => $this->langcode, 'type' => 'configuration', 'name' => 'image.style.medium'));
+    $translations = $this->storage->getTranslations(['language' => $this->langcode, 'type' => 'configuration', 'name' => 'image.style.medium']);
     $translation = reset($translations);
     $this->assertTrue(count($translations) == 1 && $translation->source == $string->source && $translation->translation == $image_style_label, 'Got only one translation for image configuration.');
 
@@ -204,12 +204,12 @@
   public function testOptionalConfiguration() {
     $this->assertNodeConfig(FALSE, FALSE);
     // Enable the node module.
-    $this->drupalPostForm('admin/modules', array('modules[Core][node][enable]' => "1"), t('Save configuration'));
-    $this->drupalPostForm(NULL, array(), t('Continue'));
+    $this->drupalPostForm('admin/modules', ['modules[Core][node][enable]' => "1"], t('Save configuration'));
+    $this->drupalPostForm(NULL, [], t('Continue'));
     $this->rebuildContainer();
     $this->assertNodeConfig(TRUE, FALSE);
     // Enable the views module (which node provides some optional config for).
-    $this->drupalPostForm('admin/modules', array('modules[Core][views][enable]' => "1"), t('Save configuration'));
+    $this->drupalPostForm('admin/modules', ['modules[Core][views][enable]' => "1"], t('Save configuration'));
     $this->rebuildContainer();
     $this->assertNodeConfig(TRUE, TRUE);
   }
@@ -226,7 +226,7 @@
    */
   protected function assertNodeConfig($required, $optional) {
     // Check the required default configuration in node module.
-    $string = $this->storage->findString(array('source' => 'Make content sticky', 'context' => '', 'type' => 'configuration'));
+    $string = $this->storage->findString(['source' => 'Make content sticky', 'context' => '', 'type' => 'configuration']);
     if ($required) {
       $this->assertFalse($this->config('system.action.node_make_sticky_action')->isNew());
       $this->assertTrue($string, 'Node action text can be found with node module.');
@@ -237,7 +237,7 @@
     }
 
     // Check the optional default configuration in node module.
-    $string = $this->storage->findString(array('source' => 'No front page content has been created yet.', 'context' => '', 'type' => 'configuration'));
+    $string = $this->storage->findString(['source' => 'No front page content has been created yet.', 'context' => '', 'type' => 'configuration']);
     if ($optional) {
       $this->assertFalse($this->config('views.view.frontpage')->isNew());
       $this->assertTrue($string, 'Node view text can be found with node and views modules.');