fix: crawl hrefs that start with config.prerender.origin (#12277)

.changeset/rude-hairs-roll.md

@@ -0,0 +1,5 @@
+---
+"@sveltejs/kit": patch
+---
+
+fix: hrefs that start with `config.prerender.origin` are now crawled

packages/kit/src/core/postbuild/prerender.js

@@ -276,7 +276,17 @@ async function prerender({ out, manifest_path, metadata, verbose, env }) {
 
  actual_hashlinks.set(decoded, ids);
 
- for (const href of hrefs) {
+ /** @param {string} href */
+ const removePrerenderOrigin = (href) => {
+ if (href.startsWith(config.prerender.origin)) {
+ if (href === config.prerender.origin) return '/';
+ if (href.at(config.prerender.origin.length) !== '/') return href;
+ return href.slice(config.prerender.origin.length);
+ }
+ return href;
+ };
+
+ for (const href of hrefs.map(removePrerenderOrigin)) {
  if (!is_root_relative(href)) continue;
 
  const { pathname, search, hash } = new URL(href, 'http:https://localhost');

packages/kit/test/prerendering/basics/src/routes/prerender-origin/+page.svelte

@@ -0,0 +1,6 @@
+<script>
+ import { page } from '$app/stores';
+ const href = new URL('/prerender-origin/dynamic', $page.url.origin).href;
+</script>
+
+<a {href}>Please crawl this</a>

packages/kit/test/prerendering/basics/src/routes/prerender-origin/[dynamic]/+page.svelte

@@ -0,0 +1,4 @@
+<h1>
+ This page will only be discovered if full hrefs that start with config.prerender.origin are
+ crawled
+</h1>

packages/kit/test/prerendering/basics/svelte.config.js

@@ -7,7 +7,7 @@ const config = {
 
  prerender: {
  handleHttpError: 'warn',
- origin: 'http:https://example.com'
+ origin: 'http:https://prerender.origin'
  }
  }
 };

packages/kit/test/prerendering/basics/test/tests.spec.js

@@ -203,7 +203,7 @@ test('fetches data from local endpoint', () => {
 
 test('respects config.prerender.origin', () => {
  const content = read('origin.html');
- expect(content).toMatch('<h2>http:https://example.com</h2>');
+ expect(content).toMatch('<h2>http:https://prerender.origin</h2>');
 });
 
 test('$env - includes environment variables', () => {
@@ -253,3 +253,8 @@ test('prerenders paths with optional parameters with empty values', () => {
  const content = read('optional-params.html');
  expect(content).includes('Path with Value');
 });
+
+test('crawls links that start with config.prerender.origin', () => {
+ const content = read('prerender-origin/dynamic.html');
+ expect(content).toBeTruthy();
+});