Turn .mjs files into .ts files

astro.config.ts

@@ -0,0 +1,22 @@
+import { defineConfig } from "astro/config";
+import tailwindcss from "@tailwindcss/vite";
+
+export default defineConfig({
+  site: "https://thiloho.github.io",
+
+  trailingSlash: "never",
+
+  prefetch: {
+    prefetchAll: true,
+  },
+
+  vite: {
+    plugins: [tailwindcss()],
+  },
+
+  markdown: {
+    shikiConfig: {
+      theme: "github-dark",
+    },
+  },
+});