robots plugin, setup shiki

astro.config.mjs

@@ -10,6 +10,10 @@ import mdx from "@astrojs/mdx";
 
 import sitemap from "@astrojs/sitemap";
 
+import robotsTxt from "astro-robots-txt";
+
+import { transformerMetaHighlight } from "@shikijs/transformers";
+
 // https://astro.build/config
 export default defineConfig({
   vite: {
@@ -26,7 +30,25 @@ export default defineConfig({
     }
   },
 
-  integrations: [icon(), mdx(), sitemap()],
+  integrations: [icon(), mdx(), sitemap(), robotsTxt()],
+
+  markdown: {
+    shikiConfig: {
+      transformers: [
+        transformerMetaHighlight(),
+        {
+          pre(hast) {
+            hast.properties["data-meta"] = this.options.meta?.__raw;
+            hast.properties["data-code"] = this.source;
+          }
+        }
+      ],
+      themes: {
+        light: "github-light",
+        dark: "github-dark"
+      }
+    }
+  },
 
   site: "https://www.nathancummins.com.au",