add Strict

Author: MartkCz

src/Strict/Strict.php

@@ -0,0 +1,20 @@
+<?php declare(strict_types = 1);
+
+namespace Utilitte\Php\Strict;
+
+final class Strict
+{
+
+	/**
+	 * @template T
+	 * @param class-string<T> $className
+	 * @return T
+	 */
+	public static function instanceOf(mixed $object, string $className): object
+	{
+		assert($object instanceof $className);
+
+		return $object;
+	}
+
+}