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system/Exceptions/HasExitCodeInterface.php

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+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Exceptions;
+
+/**
+ * Interface for Exceptions that has exception code as exit code.
+ */
+interface HasExitCodeInterface
+{
+    /**
+     * Returns exit status code.
+     */
+    public function getExitCode(): int;
+}