feat: ✨ add highlighting Markdown parser <3

www/dergdown.php

@@ -0,0 +1,39 @@
+
+
+<?php
+
+use Highlight\Highlighter;
+
+class Dergdown extends ParsedownExtra
+{
+    protected $highlighter;
+
+    public function __construct()
+    {
+        $this->highlighter = new Highlighter();
+    }
+
+    protected function blockFencedCodeComplete($block)
+    {
+        if (! isset($block['element']['text']['attributes'])) {
+            return $block;
+        }
+
+        $code = $block['element']['text']['text'];
+        $languageClass = $block['element']['text']['attributes']['class'];
+        $language = explode('-', $languageClass);
+
+        try {
+            $highlighted = $this->highlighter->highlight($language[1], $code);
+            $block['element']['text']['attributes']['class'] = vsprintf('%s hljs %s', [
+                $languageClass,
+                $highlighted->language,
+            ]);
+            $block['element']['text']['rawHtml'] = $highlighted->value;
+            unset($block['element']['text']['text']);
+        } catch (DomainException $e) {
+        }
+
+        return $block;
+    }
+}