Prerender tutorial the smart way

sites/svelte.dev/src/lib/server/tutorial/get-tutorial.js

@@ -2,12 +2,12 @@
 import fs from 'node:fs';
 import { extract_frontmatter } from '../markdown/index.js';
 
-const base = '../../site/content/tutorial/';
+const BASE = '../../site/content/tutorial/';
 
 /**
  * @returns {import('./types').TutorialData}
  */
-export function get_tutorial_data() {
+export function get_tutorial_data(base = BASE) {
 	const tutorials = [];
 
 	for (const subdir of fs.readdirSync(base)) {

sites/svelte.dev/src/routes/tutorial/[slug]/+page.server.js

@@ -1,5 +1,5 @@
 import { get_parsed_tutorial } from '$lib/server/tutorial';
-import { get_tutorial_data, get_tutorial_list } from '$lib/server/tutorial/get-tutorial-data';
+import { get_tutorial_data, get_tutorial_list } from '$lib/server/tutorial/get-tutorial';
 import { error } from '@sveltejs/kit';
 
 export const prerender = true;

sites/svelte.dev/src/routes/tutorial/[slug]/+page.svelte

@@ -153,16 +153,6 @@
 	{/if}
 </div>
 
-<!-- HACK to prerender -->
-<p style="display: none;">
-	{#each data.tutorials_list as { tutorials }}
-		{#each tutorials as { slug }}
-			<!-- svelte-ignore a11y-missing-content -->
-			<a href="/tutorial/{slug}" />
-		{/each}
-	{/each}
-</p>
-
 <style>
 	.tutorial-outer {
 		position: relative;

sites/svelte.dev/svelte.config.js

@@ -1,6 +1,7 @@
 // @ts-check
 import adapter from '@sveltejs/adapter-vercel';
 import { get_examples_data, get_examples_list } from './src/lib/server/examples/get-examples.js';
+import { get_tutorial_data, get_tutorial_list } from './src/lib/server/tutorial/get-tutorial.js';
 
 /** @type {import('@sveltejs/kit').Config} */
 export default {
@@ -9,7 +10,7 @@ export default {
 		prerender: {
 			// TODO: REMOVE
 			handleMissingId: 'ignore',
-			entries: ['*', ...replJsonEntries()],
+			entries: ['*', ...replJsonEntries(), ...tutorialEntries()],
 		},
 	},
 };
@@ -21,3 +22,11 @@ function replJsonEntries() {
 		get_examples_data(new URL('../../site/content/examples', import.meta.url).pathname)
 	).flatMap(({ examples }) => examples.map(({ slug }) => `/repl/${slug}.json`));
 }
+
+/** @returns {('*' | `/${string}`)[]} */
+function tutorialEntries() {
+	// @ts-ignore
+	return get_tutorial_list(
+		get_tutorial_data(new URL('../../site/content/tutorial', import.meta.url).pathname)
+	).flatMap(({ tutorials }) => tutorials.map(({ slug }) => `/tutorial/${slug}`));
+}