vendor and env first commit

vendor/league/commonmark/src/Parser/MarkdownParserInterface.php

@@ -0,0 +1,25 @@
+<?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\Parser;
+
+use League\CommonMark\Exception\CommonMarkException;
+use League\CommonMark\Node\Block\Document;
+
+interface MarkdownParserInterface
+{
+    /**
+     * @throws CommonMarkException
+     */
+    public function parse(string $input): Document;
+}