initial commit

app/Data/InvariantException.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Data;
+
+use Throwable;
+
+class InvariantException extends \InvalidArgumentException
+{
+    /**
+     * @param array<string> $fields
+     */
+    public function __construct(string $message, public readonly array $fields, int $code = 0, ?Throwable $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+    }
+}