diff --git a/src/functions.php b/src/functions.php
index 6a5e250..9dc85ca 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -6,6 +6,7 @@
 require_once __DIR__ . '/functions/cache.php';
 require_once __DIR__ . '/functions/common.php';
 require_once __DIR__ . '/functions/db.php';
+require_once __DIR__ . '/functions/field.php';
 require_once __DIR__ . '/functions/file.php';
 require_once __DIR__ . '/functions/form.php';
 require_once __DIR__ . '/functions/lock.php';
diff --git a/src/functions/field.php b/src/functions/field.php
new file mode 100644
index 0000000..024d77c
--- /dev/null
+++ b/src/functions/field.php
@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+use Drupal\Core\Field\FieldTypePluginManagerInterface;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\field\FieldConfigInterface;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\field\FieldStorageConfigInterface;
+
+/**
+ * @param array{
+ *   field_name: string,
+ *   type: string
+ * } $field
+ */
+function field_create_field(array $field): FieldStorageConfigInterface
+{
+    $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
+    $info = $field_type_manager->getDefinitions();
+    $field['type'] = match ($field['type']) {
+        'datestamp' => 'datetime',
+        'list_text' => 'list_string',
+        default => isset($info["retrofit_field:$field[type]"]) ? "retrofit_field:$field[type]" : $field['type'],
+    };
+    $field_storage = FieldStorageConfig::create($field + ['entity_type' => 'node']);
+    $field_storage->save();
+    return $field_storage;
+}
+
+/**
+ * @param array{
+ *   field_name: string,
+ *   entity_type: string,
+ *   bundle: string
+ * } $instance
+ */
+function field_create_instance(array $instance): FieldConfigInterface
+{
+    $field = FieldConfig::create($instance);
+    $field->save();
+    return $field;
+}
+
+function field_info_field(string $field_name): ?FieldStorageConfigInterface
+{
+    return FieldStorageConfig::loadByName('node', $field_name);
+}
+
+function field_info_instance(string $entity_type, string $field_name, string $bundle_name): ?FieldConfigInterface
+{
+    return FieldConfig::loadByName($entity_type, $bundle_name, $field_name);
+}