next.config.js

@@ -26,10 +26,6 @@ module.exports = withBundleAnalyzer({
       use: ['@svgr/webpack'],
     })
 
-    if (!dev && isServer) {
-      require('./scripts/generate-sitemap')
-    }
-
     if (!dev && !isServer) {
       // Replace React with Preact only in client production build
       Object.assign(config.resolve.alias, {

package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "start": "next dev",
     "dev": "next dev",
-    "build": "next build",
+    "build": "next build && node ./scripts/generate-sitemap",
     "serve": "next start",
     "analyze": "ANALYZE=true next build"
   },

scripts/generate-sitemap.js

@@ -9,6 +9,7 @@ const siteMetadata = require('../data/siteMetadata')
     'pages/*.js',
     'data/**/*.mdx',
     'data/**/*.md',
+    'public/tags/**/*.xml',
     '!pages/_*.js',
     '!pages/api',
   ])
@@ -21,9 +22,11 @@ const siteMetadata = require('../data/siteMetadata')
                 const path = page
                   .replace('pages', '')
                   .replace('data', '')
+                  .replace('public', '')
                   .replace('.js', '')
                   .replace('.mdx', '')
                   .replace('.md', '')
+                  .replace('/index.xml', '')
                 const route = path === '/index' ? '' : path
                 return `
                         <url>