clean install

web/modules/date_popup/src/DatePopup.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Drupal\date_popup;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\views\Plugin\views\filter\Date;
+
+/**
+ * The date popup views filter plugin.
+ */
+class DatePopup extends Date {
+
+  use DatePopupTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildExposedForm(&$form, FormStateInterface $form_state) {
+    parent::buildExposedForm($form, $form_state);
+    $this->applyDatePopupToForm($form);
+  }
+
+}