diff -u b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangeCustomFormatter.php b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangeCustomFormatter.php
--- b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangeCustomFormatter.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangeCustomFormatter.php
@@ -4,7 +4,6 @@
 
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\Core\Form\FormStateInterface;
-use Drupal\datetime\Plugin\Field\FieldType\DateRangeItem;
 
 /**
  * Plugin implementation of the 'Custom' formatter for 'daterange' fields.
diff -u b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangeDefaultFormatter.php b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangeDefaultFormatter.php
--- b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangeDefaultFormatter.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangeDefaultFormatter.php
@@ -4,7 +4,6 @@
 
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\Core\Form\FormStateInterface;
-use Drupal\datetime\Plugin\Field\FieldType\DateRangeItem;
 
 /**
  * Plugin implementation of the 'Default' formatter for 'daterange' fields.
diff -u b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangePlainFormatter.php b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangePlainFormatter.php
--- b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangePlainFormatter.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateRangePlainFormatter.php
@@ -4,7 +4,6 @@
 
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\Core\Form\FormStateInterface;
-use Drupal\datetime\Plugin\Field\FieldType\DateRangeItem;
 
 /**
  * Plugin implementation of the 'Plain' formatter for 'daterange' fields.
diff -u b/core/modules/datetime/src/Tests/DateRangeFieldTest.php b/core/modules/datetime/src/Tests/DateRangeFieldTest.php
--- b/core/modules/datetime/src/Tests/DateRangeFieldTest.php
+++ b/core/modules/datetime/src/Tests/DateRangeFieldTest.php
@@ -206,7 +206,7 @@
       datetime_date_default_time($end_date);
 
       // Reset display options since these get changed below.
-      $this->displayOptions =[
+      $this->displayOptions = [
         'type' => 'daterange_default',
         'label' => 'hidden',
         'settings' => [
@@ -546,7 +546,7 @@
     // Display creation form.
     $this->drupalGet('entity_test/add');
 
-    foreach (['value','end-value'] as $column) {
+    foreach (['value', 'end-value'] as $column) {
       foreach (['year', 'month', 'day', 'hour', 'minute', 'ampm'] as $element) {
         $this->assertFieldByXPath("//*[@id=\"edit-$field_name-0-$column-$element\"]", NULL, $element . ' element found.');
         $this->assertOptionSelected("edit-$field_name-0-$column-$element", '', 'No ' . $element . ' selected.');