Add frontmatter data for exclusing an item from sitemap

src/changelogs/logs/logs.11tydata.js

@@ -1,6 +1,7 @@
 export default {
     tags: ["changelogs", "feed items"],
     permalink: false,
+    excludeFromSitemap: true,
     eleventyComputed: {
         title: function(data) {
             return `Changelog: ${this.formatDate(data.date)}`;

src/sitemap.xml.njk

@@ -1,15 +0,0 @@
----
-permalink: "{{ page.filePathStem }}"
-eleventyExcludeFromCollections: true
----
-<?xml version="1.0" encoding="utf-8"?>
-<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
-    {%- for item in collections.all %}
-    <url>
-        <loc>{{ sitemeta.siteUrl + item.url }}</loc>
-        <lastmod>{% if item.updated %}{{ item.updated.toISOString() }}{% else %}{{ item.date.toISOString() }}{% endif %}</lastmod>
-        <changefreq>{{ item.data.sitemap.changefreq | default("weekly") }}</changefreq>
-		<priority>{{ item.data.sitemap.priority | default(0.5) }}</priority>
-    </url>
-    {%- endfor %}
-</urlset>

src/sitemap.xml.vto

@@ -0,0 +1,17 @@
+---
+permalink: "{{ page.filePathStem }}"
+eleventyExcludeFromCollections: true
+---
+<?xml version="1.0" encoding="utf-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+    {{ for item of collections.all }}
+    {{ if !item.data.excludeFromSitemap }}
+    <url>
+        <loc>{{ sitemeta.siteUrl + item.url }}</loc>
+        <lastmod>{{ item.updated ? item.updated.toISOString() : item.date.toISOString() }}</lastmod>
+        <changefreq>{{ item.data.sitemap.changefreq }}</changefreq>
+		<priority>{{ item.data.sitemap.priority }}</priority>
+    </url>
+    {{ /if }}
+    {{ /for }}
+</urlset>

src/src.11tydata.js

@@ -0,0 +1,6 @@
+export default {
+    sitemap: {
+        changefreq: "weekly",
+        priority: 0.5,
+    }
+}