Add sitemap copier integration as workaround solution

See withastro/adapters#445

astro.config.ts

@@ -6,6 +6,7 @@ import remarkCollapse from "remark-collapse";
 import sitemap from "@astrojs/sitemap";
 import { SITE } from "./src/config";
 import { remarkReadingTime } from "./src/utils/remark-reading-time.mjs";
+import { sitemapCopier } from "./src/utils/sitemap-copier.ts";
 
 import vercel from "@astrojs/vercel";
 
@@ -19,6 +20,7 @@ export default defineConfig({
     }),
     react(),
     sitemap(),
+    sitemapCopier(),
   ],
 
   markdown: {

src/config.ts

@@ -1,9 +1,9 @@
 import type { Site, SocialObjects } from "./types";
 
 export const SITE: Site = {
-  website: "https://nicklasbekkevold.com/",
+  website: "https://nicklasbekkevold.com",
   author: "Nicklas Bekkevold",
-  profile: "https://nicklasbekkevold.com/",
+  profile: "https://nicklasbekkevold.com",
   desc: "Independent internet magazine featuring thoughts and reflections at the intersection of science, technology, and society.",
   title: "nicklasbekkevold.com",
   ogImage: "astropaper-og.jpg",

src/utils/sitemap-copier.ts

@@ -0,0 +1,32 @@
+import type { AstroIntegration } from "astro";
+import { readdir, cp } from "node:fs/promises";
+import * as path from "node:path";
+
+export function sitemapCopier(): AstroIntegration {
+  return {
+    name: "sitemap-copier",
+    hooks: {
+      "astro:build:done": async ({ logger }) => {
+        const buildLogger = logger.fork("sitemap-copier");
+        buildLogger.info("Copying xml files from dist to vercel out");
+        try {
+          const files = await readdir("./dist");
+          const xmlFiles = files.filter(
+            file =>
+              path.extname(file).toLowerCase() === ".xml" &&
+              path.basename(file).toLowerCase().startsWith("sitemap")
+          );
+          buildLogger.info(xmlFiles.join(", "));
+          for (const file of xmlFiles) {
+            const sourcePath = path.join("./dist", file);
+            const destPath = path.join("./.vercel/output/static", file);
+            await cp(sourcePath, destPath);
+          }
+          buildLogger.info("All XML files copied successfully");
+        } catch (error) {
+          buildLogger.error(`Error copying files: ${error}`);
+        }
+      },
+    },
+  };
+}