From 45a80e513d1fb75628c88a2cdd214ca3dd424edb Mon Sep 17 00:00:00 2001
From: Oliver Davies <oliver@oliverdavies.uk>
Date: Wed, 1 Feb 2023 08:54:25 +0000
Subject: [PATCH] sitemap: Remove trailing slashes from URLs

---
 website/astro.config.mjs | 29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)

diff --git a/website/astro.config.mjs b/website/astro.config.mjs
index b573f2e2..7c83e27f 100644
--- a/website/astro.config.mjs
+++ b/website/astro.config.mjs
@@ -1,4 +1,4 @@
-import { defineConfig } from 'astro/config';
+import { defineConfig } from "astro/config";
 import alpinejs from "@astrojs/alpinejs";
 import tailwind from "@astrojs/tailwind";
 import mdx from "@astrojs/mdx";
@@ -8,10 +8,23 @@ import sitemap from "@astrojs/sitemap";
 
 // https://astro.build/config
 export default defineConfig({
-  integrations: [alpinejs(), tailwind({
-    config: {
-      applyBaseStyles: false
-    }
-  }), mdx(), sitemap()],
-  site: 'https://www.oliverdavies.uk'
-});
\ No newline at end of file
+  integrations: [
+    alpinejs(),
+    mdx(),
+    sitemap({
+      serialize(item) {
+        // To prevent crawling errors, remove the trailing slash from the URL
+        // otherwise it will be a link to a redirect URL and not the content.
+        item.url = item.url.replace(/\/$/, "");
+
+        return item;
+      },
+    }),
+    tailwind({
+      config: {
+        applyBaseStyles: false,
+      },
+    }),
+  ],
+  site: "https://www.oliverdavies.uk",
+});