fix(site-2): Prerender nav data (#8747)

* simplify nav

* updates

* fix link

* Dont need this anymore

* Push

* minor re-arrangement

---------

Co-authored-by: Rich Harris <git@rich-harris.dev>

sites/svelte.dev/src/routes/+layout.server.js

@@ -1,7 +1,11 @@
-import { get_blog_data, get_blog_list } from '$lib/server/blog/index.js';
-import { get_docs_data, get_docs_list } from '$lib/server/docs/index.js';
-import { get_examples_data, get_examples_list } from '$lib/server/examples/index.js';
-import { get_tutorial_data, get_tutorial_list } from '$lib/server/tutorial/index.js';
+export const load = async ({ url, fetch }) => {
+	const nav_list = await fetch('/nav.json').then((r) => r.json());
+
+	return {
+		nav_title: get_nav_title(url),
+		nav_links: nav_list
+	};
+};
 
 /** @param {URL} url */
 function get_nav_title(url) {
@@ -23,80 +27,3 @@ function get_nav_title(url) {
 
 	return '';
 }
-
-/**
- * @returns {Promise<import('@sveltejs/site-kit').NavigationLink[]>}
- */
-async function get_nav_context_list() {
-	const docs_list = get_docs_list(get_docs_data());
-	const processed_docs_list = docs_list.map(({ title, pages }) => ({
-		title,
-		sections: pages.map(({ title, path }) => ({ title, path }))
-	}));
-
-	const blog_list = get_blog_list(get_blog_data());
-	const processed_blog_list = [
-		{
-			title: 'Blog',
-			sections: blog_list.map(({ title, slug, date }) => ({
-				title,
-				path: '/blog/' + slug,
-				// Put a NEW badge on blog posts that are less than 14 days old
-				badge: (+new Date() - +new Date(date)) / (1000 * 60 * 60 * 24) < 14 ? 'NEW' : undefined
-			}))
-		}
-	];
-
-	const tutorial_list = get_tutorial_list(get_tutorial_data());
-	const processed_tutorial_list = tutorial_list.map(({ title, tutorials }) => ({
-		title,
-		sections: tutorials.map(({ title, slug }) => ({ title, path: '/tutorial/' + slug }))
-	}));
-
-	const examples_list = get_examples_list(get_examples_data());
-	const processed_examples_list = examples_list
-		.map(({ title, examples }) => ({
-			title,
-			sections: examples.map(({ title, slug }) => ({ title, path: '/examples/' + slug }))
-		}))
-		.filter(({ title }) => title !== 'Embeds');
-
-	return [
-		{
-			title: 'Tutorial',
-			prefix: 'tutorial',
-			pathname: '/tutorial',
-			sections: processed_tutorial_list
-		},
-		{
-			title: 'Docs',
-			prefix: 'docs',
-			pathname: '/docs/introduction',
-			sections: processed_docs_list
-		},
-		{
-			title: 'Examples',
-			prefix: 'examples',
-			pathname: '/examples',
-			sections: processed_examples_list
-		},
-		{
-			title: 'REPL',
-			prefix: 'repl',
-			pathname: '/repl'
-		},
-		{
-			title: 'Blog',
-			prefix: 'blog',
-			pathname: '/blog',
-			sections: processed_blog_list
-		}
-	];
-}
-
-export const load = async ({ url }) => {
-	return {
-		nav_title: get_nav_title(url),
-		nav_links: get_nav_context_list()
-	};
-};

sites/svelte.dev/src/routes/nav.json/+server.js

@@ -0,0 +1,81 @@
+import { get_blog_data, get_blog_list } from '$lib/server/blog/index.js';
+import { get_docs_data, get_docs_list } from '$lib/server/docs/index.js';
+import { get_examples_data, get_examples_list } from '$lib/server/examples/index.js';
+import { get_tutorial_data, get_tutorial_list } from '$lib/server/tutorial/index.js';
+import { json } from '@sveltejs/kit';
+
+export const prerender = true;
+
+export const GET = async () => {
+	return json(await get_nav_list());
+};
+
+/**
+ * @returns {Promise<import('@sveltejs/site-kit').NavigationLink[]>}
+ */
+async function get_nav_list() {
+	const docs_list = get_docs_list(get_docs_data());
+	const processed_docs_list = docs_list.map(({ title, pages }) => ({
+		title,
+		sections: pages.map(({ title, path }) => ({ title, path }))
+	}));
+
+	const blog_list = get_blog_list(get_blog_data());
+	const processed_blog_list = [
+		{
+			title: 'Blog',
+			sections: blog_list.map(({ title, slug, date }) => ({
+				title,
+				path: '/blog/' + slug,
+				// Put a NEW badge on blog posts that are less than 14 days old
+				badge: (+new Date() - +new Date(date)) / (1000 * 60 * 60 * 24) < 14 ? 'NEW' : undefined
+			}))
+		}
+	];
+
+	const tutorial_list = get_tutorial_list(get_tutorial_data());
+	const processed_tutorial_list = tutorial_list.map(({ title, tutorials }) => ({
+		title,
+		sections: tutorials.map(({ title, slug }) => ({ title, path: '/tutorial/' + slug }))
+	}));
+
+	const examples_list = get_examples_list(get_examples_data());
+	const processed_examples_list = examples_list
+		.map(({ title, examples }) => ({
+			title,
+			sections: examples.map(({ title, slug }) => ({ title, path: '/examples/' + slug }))
+		}))
+		.filter(({ title }) => title !== 'Embeds');
+
+	return [
+		{
+			title: 'Tutorial',
+			prefix: 'tutorial',
+			pathname: '/tutorial',
+			sections: processed_tutorial_list
+		},
+		{
+			title: 'Docs',
+			prefix: 'docs',
+			pathname: '/docs/introduction',
+			sections: processed_docs_list
+		},
+		{
+			title: 'Examples',
+			prefix: 'examples',
+			pathname: '/examples',
+			sections: processed_examples_list
+		},
+		{
+			title: 'REPL',
+			prefix: 'repl',
+			pathname: '/repl'
+		},
+		{
+			title: 'Blog',
+			prefix: 'blog',
+			pathname: '/blog',
+			sections: processed_blog_list
+		}
+	];
+}