vendor and env first commit

vendor/league/commonmark/src/Renderer/NodeRendererInterface.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Renderer;
+
+use League\CommonMark\Exception\InvalidArgumentException;
+use League\CommonMark\Node\Node;
+
+interface NodeRendererInterface
+{
+    /**
+     * @return \Stringable|string|null
+     *
+     * @throws InvalidArgumentException if the wrong type of Node is provided
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer);
+}