🔧 Add markdown & extensions config.

svelte.config.js

@@ -1,13 +1,32 @@
 import adapter from '@sveltejs/adapter-auto';
 import { vitePreprocess } from '@sveltejs/kit/vite';
 
+// Extensions:
+import { mdsvex, escapeSvelte } from 'mdsvex';
+import shiki from 'shiki';
+
+// Markdown config:
+/** @type {import('mdsvex').MdsvexOptions} */
+const mdsvexOptions = {
+  extensions: ['.md'],
+  highlight: {
+    highlighter: async (code, lang = 'text') => {
+      const highlighter = await shiki.getHighlighter({ theme: 'vitesse-dark' });
+      const html = escapeSvelte(highlighter.codeToHtml(code, { lang }));
+      return `{@html \`${html}\` }`;
+    }
+  }
+};
+
+// Svelte config:
 /** @type {import('@sveltejs/kit').Config} */
 const config = {
-  preprocess: vitePreprocess(),
+  extensions: ['.svelte', '.md'],
+  preprocess: [vitePreprocess(), mdsvex(mdsvexOptions)],
   kit: {
     adapter: adapter(),
     alias: {
-      '@': './src/*',
+      '@': './src/*'
     }
   }
 };