Creating a sitemap in 11ty

In order to submit your site to search analytics you should have a sitemap of your content. Having this just makes it easier and quicker for the search engines to find and index your site content. So I went about find how to do this with 11ty. The base blog of 11ty has this built in so I made a few changes especially for the dates.

---
permalink: /sitemap.xml
eleventyExcludeFromCollections: true
---
<?xml version="1.0" encoding="utf-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
{%- for page in collections.all %}
  {% set mappedUrl %}{{ metadata.url}}{{ page.url | url }}{% endset %}
  <url>
    <loc>{{ mappedUrl }}</loc>
    <lastmod>{{ page.date | htmlDateString }}</lastmod>
  </url>
{%- endfor %}
</urlset>