Issue #3373225: Fix the issues reported by phpcs

src/Plugin/Field/FieldWidget/TimePickerWidget.php

@@ -64,7 +64,7 @@ class TimePickerWidget extends WidgetBase {
    * {@inheritdoc}
    */
   public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
-    $value = isset($items[$delta]->time) ? $items[$delta]->time : '';
+    $value = $items[$delta]->time ?? '';
     if ($this->fieldDefinition->getFieldStorageDefinition()->getCardinality() == 1) {
       $element += [
         '#type' => 'fieldset',
@@ -83,7 +83,10 @@ class TimePickerWidget extends WidgetBase {
       ],
     ];
     $element['#attached']['library'][] = 'time_picker/time_picker';
-    $element['#attached']['drupalSettings']['time_picker'] = ['hour_format' => $this->getFieldSetting('hour_format'), 'theme_color' => $this->getFieldSetting('time_picker_theme')];
+    $element['#attached']['drupalSettings']['time_picker'] = [
+      'hour_format' => $this->getFieldSetting('hour_format'),
+      'theme_color' => $this->getFieldSetting('time_picker_theme'),
+    ];
     return $element;
   }