astro/.changeset/fair-emus-divide.md

astro	@astrojs/netlify
major	minor

The configuration build.split and build.excludeMiddleware are deprecated.

Configuration that were inside the astro configuration, are now moved inside the adapter:

import {defineConfig} from "astro/config";
import netlify from "@astrojs/netlify/functions";

export default defineConfig({
-    build: {
-        excludeMiddleware: true
-    },
-    adapter: netlify()
+    adapter: netlify({
+        edgeMiddleware: true
+    })
})

import {defineConfig} from "astro/config";
import netlify from "@astrojs/netlify/functions";

export default defineConfig({
-    build: {
-        split: true
-    },
-    adapter: netlify()
+    adapter: netlify({
+        functionPerRoute: true
+    })
})