--- /dev/null
+<?php
+
+namespace Drupal\metatag\Plugin\GraphQL\Scalars;
+
+use Drupal\graphql\Plugin\GraphQL\Scalars\Internal\StringScalar;
+
+/**
+ * Metatag module dummy type.
+ *
+ * Metatag module defines a custom data type that essentially is a string, but
+ * not called "string", which causes the GraphQL type system chokes.
+ *
+ * @GraphQLScalar(
+ * id = "metatag",
+ * name = "metatag",
+ * type = "string"
+ * )
+ */
+class MetatagScalar extends StringScalar {
+}