use next-sitemap server-side instead of manually generating the xml

package.json

@@ -51,6 +51,7 @@
     "next-compose-plugins": "^2.2.1",
     "next-mdx-remote": "4.0.0-rc.1",
     "next-seo": "^5.1.0",
+    "next-sitemap": "^2.1.14",
     "next-themes": "^0.0.15",
     "next-transpile-modules": "^9.0.0",
     "node-fetch": "^3.2.0",

pages/feed.atom.ts

@@ -1,8 +1,6 @@
 import { buildFeed } from "../lib/build-feed";
 import type { GetServerSideProps } from "next";
 
-const AtomFeed = () => null;
-
 export const getServerSideProps: GetServerSideProps = async (context) => {
   const feed = buildFeed();
   const { res } = context;
@@ -18,4 +16,5 @@ export const getServerSideProps: GetServerSideProps = async (context) => {
   };
 };
 
-export default AtomFeed;
+// eslint-disable-next-line import/no-anonymous-default-export
+export default () => null;

pages/feed.xml.ts

@@ -1,8 +1,6 @@
 import { buildFeed } from "../lib/build-feed";
 import type { GetServerSideProps } from "next";
 
-const RssFeed = () => null;
-
 export const getServerSideProps: GetServerSideProps = async (context) => {
   const feed = buildFeed();
   const { res } = context;
@@ -18,4 +16,5 @@ export const getServerSideProps: GetServerSideProps = async (context) => {
   };
 };
 
-export default RssFeed;
+// eslint-disable-next-line import/no-anonymous-default-export
+export default () => null;

pages/sitemap.xml.ts

@@ -1,72 +1,48 @@
-// WARNING: THIS FILE CONTAINS HISTORICAL LEVELS OF HACKINESS AND SHOULD NOT BE REPLICATED NOR ADMIRED.
+import { getServerSideSitemap } from "next-sitemap";
-
 import { getAllNotes } from "../lib/parse-notes";
 import { baseUrl } from "../lib/config";
 import type { GetServerSideProps } from "next";
-
+import type { ISitemapField } from "next-sitemap";
-const Sitemap = () => null;
-
-type Page = {
-  relUrl: string;
-  priority?: number;
-  changeFreq?: string;
-  lastMod?: string | Date;
-};
 
 export const getServerSideProps: GetServerSideProps = async (context) => {
-  // TODO: make this not manual (serverless functions can't see /pages at runtime)
+  // TODO: make this not manual (serverless functions can't see filesystem at runtime)
-  const pages: Page[] = [
+  const pages: ISitemapField[] = [
-    { relUrl: "/", priority: 1.0, changeFreq: "weekly" }, // homepage
+    { loc: "/", priority: 1.0, changefreq: "weekly" }, // homepage
-    { relUrl: "/notes/", changeFreq: "weekly" },
+    { loc: "/notes/", changefreq: "weekly" },
-    { relUrl: "/birthday/" },
+    { loc: "/birthday/" },
-    { relUrl: "/cli/" },
+    { loc: "/cli/" },
-    { relUrl: "/contact/" },
+    { loc: "/contact/" },
-    { relUrl: "/hillary/" },
+    { loc: "/hillary/" },
-    { relUrl: "/leo/" },
+    { loc: "/leo/" },
-    { relUrl: "/license/", priority: 0.1, changeFreq: "yearly" },
+    { loc: "/license/", priority: 0.1, changefreq: "yearly" },
-    { relUrl: "/previously/" },
+    { loc: "/previously/" },
-    { relUrl: "/privacy/", priority: 0.1, changeFreq: "yearly" },
+    { loc: "/privacy/", priority: 0.1, changefreq: "yearly" },
-    { relUrl: "/projects/", changeFreq: "daily" },
+    { loc: "/projects/", changefreq: "daily" },
-    { relUrl: "/uses/" },
+    { loc: "/uses/" },
-    { relUrl: "/y2k/" },
+    { loc: "/y2k/" },
   ];
 
   // push notes separately and use their metadata
   const notes = getAllNotes();
   notes.map((note) =>
     pages.push({
-      relUrl: `/notes/${note.slug}/`,
+      loc: `/notes/${note.slug}/`,
       // pull lastMod from front matter date
-      lastMod: note.date,
+      lastmod: note.date,
+      priority: 0.7,
     })
   );
 
-  const xml = `<?xml version="1.0" encoding="UTF-8"?>
+  // make all relative URLs absolute
-<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  pages.map((page) => (page.loc = `${baseUrl}${page.loc}`));
-  ${pages
-    .map(
-      (page) => `
-  <url>
-    <loc>${baseUrl}${page.relUrl}</loc>
-    <priority>${page.priority ? page.priority.toFixed(1) : 0.7}</priority>
-    <changefreq>${page.changeFreq || "monthly"}</changefreq>
-    <lastmod>${page.lastMod || new Date().toISOString()}</lastmod>
-  </url>`
-    )
-    .join("")
-    .trim()}
-</urlset>`;
 
-  const { res } = context;
-  res.setHeader("content-type", "application/xml; charset=utf-8");
   // cache on edge for one hour
+  const { res } = context;
   res.setHeader("cache-control", "s-maxage=3600, stale-while-revalidate");
-  res.write(xml);
-  res.end();
 
-  return {
+  // next-sitemap takes care of the rest of the response for us
-    props: {},
+  return getServerSideSitemap(context, pages);
-  };
 };
 
-export default Sitemap;
+// eslint-disable-next-line import/no-anonymous-default-export
+export default () => null;

yarn.lock

@@ -1030,6 +1030,11 @@
     "@babel/helper-validator-identifier" "^7.16.7"
     to-fast-properties "^2.0.0"
 
+"@corex/deepmerge@^2.6.148":
+  version "2.6.148"
+  resolved "https://registry.yarnpkg.com/@corex/deepmerge/-/deepmerge-2.6.148.tgz#8fa825d53ffd1cbcafce1b6a830eefd3dcc09dd5"
+  integrity sha512-6QMz0/2h5C3ua51iAnXMPWFbb1QOU1UvSM4bKBw5mzdT+WtLgjbETBBIQZ+Sh9WvEcGwlAt/DEdRpIC3XlDBMA==
+
 "@csstools/postcss-font-format-keywords@^1.0.0":
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/@csstools/postcss-font-format-keywords/-/postcss-font-format-keywords-1.0.0.tgz#7e7df948a83a0dfb7eb150a96e2390ac642356a1"
@@ -4843,6 +4848,14 @@ next-seo@^5.1.0:
   resolved "https://registry.yarnpkg.com/next-seo/-/next-seo-5.1.0.tgz#aa9fd6249a11bf93e6da06fa2a6bc89268936edf"
   integrity sha512-ampuQfNTOi1x+xtRIb6CZGunIo6rQXtMo2Tyu861d5GjJFIwfOXsA4lzCa4+e2rLkyXDyVpavNNUZWa3US9ELw==
 
+next-sitemap@^2.1.14:
+  version "2.1.14"
+  resolved "https://registry.yarnpkg.com/next-sitemap/-/next-sitemap-2.1.14.tgz#d800a85c2d045dfdfe8982c8fdb3304087950515"
+  integrity sha512-7IqZjCGYSoA7csSc7B3m3m7hlFYd7Csg2PrNX97wH6/yJZ58nXiBR2JYQhHOZE3CzP3BAUKxwhiv2SlDiRzNXA==
+  dependencies:
+    "@corex/deepmerge" "^2.6.148"
+    minimist "^1.2.5"
+
 next-themes@^0.0.15:
   version "0.0.15"
   resolved "https://registry.yarnpkg.com/next-themes/-/next-themes-0.0.15.tgz#ab0cee69cd763b77d41211f631e108beab39bf7d"