Fix 404 when accessing rss.xml for the root page (#3896)

.changeset/blue-ideas-design.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix 404 when accessing rss.xml for the root page.

packages/gitbook/src/app/utils.ts

@@ -83,6 +83,11 @@ export function getPagePathFromParams(params: RouteParams) {
     // If decoding the param fails, return a 404 instead of crashing
     try {
         const decoded = decodeURIComponent(params.pagePath);
+
+        // For the root page, we encode '/' to avoid an empty param being passed.
+        if (decoded === '/') {
+            return '';
+        }
         return decoded;
     } catch (error) {
         console.error(

packages/gitbook/tests/rss.test.ts

@@ -19,4 +19,12 @@ it('should not expose a RSS feed for a page without updates', async () => {
     );
     const response = await fetch(feedURL);
     expect(response.status).toBe(404);
+    expect(await response.text()).toBe('No updates found in page');
+});
+
+it('should not expose a RSS feed for a page without updates (root page)', async () => {
+    const feedURL = getContentTestURL('https://gitbook.gitbook.io/test-gitbook-open/rss.xml');
+    const response = await fetch(feedURL);
+    expect(response.status).toBe(404);
+    expect(await response.text()).toBe('No updates found in page');
 });