handle doc 404s

sites/kit.svelte.dev/src/lib/docs/server/index.js

@@ -33,7 +33,7 @@ const type_regex = new RegExp(
  * @param {string} dir
  * @param {string} file
  */
-export async function read_file(dir, file) {
+async function read_file(dir, file) {
 	const match = /\d{2}-(.+)\.md/.exec(file);
 	if (!match) return null;
 

sites/kit.svelte.dev/src/routes/docs/[slug].js

@@ -0,0 +1,28 @@
+import { mode, prerendering } from '$app/env';
+import { read } from '$lib/docs/server';
+
+/** @type {import('@sveltejs/kit').RequestHandler} */
+export async function get({ params }) {
+	// TODO https://github.com/sveltejs/kit/issues/4093
+	if (!prerendering && mode === 'production') {
+		return { status: 404 };
+	}
+
+	const page = await read('docs', params.slug);
+
+	if (!page) {
+		return { status: 404 };
+	}
+
+	return {
+		body: {
+			prev: page.prev,
+			next: page.next,
+			section: {
+				file: page.section.file,
+				title: page.section.title,
+				content: page.section.content
+			}
+		}
+	};
+}

sites/kit.svelte.dev/src/routes/docs/[slug].svelte

@@ -1,20 +1,5 @@
 <script context="module">
 	export const prerender = true;
-
-	// TODO should use a shadow endpoint instead, need to fix a bug first
-	/** @type {import('@sveltejs/kit').Load} */
-	export async function load({ fetch, params }) {
-		const res = await fetch(`/docs/${params.slug}.json`);
-		const { prev, next, section } = await res.json();
-
-		return {
-			props: {
-				prev,
-				next,
-				section
-			}
-		};
-	}
 </script>
 
 <script>