fix: Use next-intl for improved locale support

app/[locale]/sitemap.ts

@@ -0,0 +1,49 @@
+import { getCollections, getPages, getProducts } from 'lib/shopify';
+import { MetadataRoute } from 'next';
+
+type Route = {
+  url: string;
+  lastModified: string;
+};
+
+const baseUrl = process.env.NEXT_PUBLIC_VERCEL_URL
+  ? `https://${process.env.NEXT_PUBLIC_VERCEL_URL}`
+  : 'http://localhost:3000';
+
+export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
+  const routesMap = [''].map((route) => ({
+    url: `${baseUrl}${route}`,
+    lastModified: new Date().toISOString()
+  }));
+
+  const collectionsPromise = getCollections().then((collections) =>
+    collections.map((collection) => ({
+      url: `${baseUrl}${collection.path}`,
+      lastModified: collection.updatedAt
+    }))
+  );
+
+  const productsPromise = getProducts({}).then((products) =>
+    products.map((product) => ({
+      url: `${baseUrl}/product/${product.handle}`,
+      lastModified: product.updatedAt
+    }))
+  );
+
+  const pagesPromise = getPages({}).then((pages) =>
+    pages.map((page) => ({
+      url: `${baseUrl}/${page.handle}`,
+      lastModified: page.updatedAt
+    }))
+  );
+
+  let fetchedRoutes: Route[] = [];
+
+  try {
+    fetchedRoutes = (await Promise.all([collectionsPromise, productsPromise, pagesPromise])).flat();
+  } catch (error) {
+    throw JSON.stringify(error, null, 2);
+  }
+
+  return [...routesMap, ...fetchedRoutes];
+}