Upgrade framework

vendor/league/commonmark/src/GithubFlavoredMarkdownConverter.php

@@ -0,0 +1,45 @@
+<?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;
+
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\GithubFlavoredMarkdownExtension;
+
+/**
+ * Converts GitHub Flavored Markdown to HTML.
+ */
+final class GithubFlavoredMarkdownConverter extends MarkdownConverter
+{
+    /**
+     * Create a new Markdown converter pre-configured for GFM
+     *
+     * @param array<string, mixed> $config
+     */
+    public function __construct(array $config = [])
+    {
+        $environment = new Environment($config);
+        $environment->addExtension(new CommonMarkCoreExtension());
+        $environment->addExtension(new GithubFlavoredMarkdownExtension());
+
+        parent::__construct($environment);
+    }
+
+    public function getEnvironment(): Environment
+    {
+        \assert($this->environment instanceof Environment);
+
+        return $this->environment;
+    }
+}