Cleanup code, improve typings

common/models/EmailActivationQuery.php

@@ -0,0 +1,17 @@
+<?php
+declare(strict_types=1);
+
+namespace common\models;
+
+use yii\db\ActiveQuery;
+
+/**
+ * @see EmailActivation
+ */
+class EmailActivationQuery extends ActiveQuery {
+
+    public function withType(int ...$typeId): self {
+        return $this->andWhere(['type' => $typeId]);
+    }
+
+}