Fix table of content displaying arrow next to page with only hidden pages (#2825)

.changeset/purple-gorillas-fetch.md

@@ -0,0 +1,5 @@
+---
+'gitbook': patch
+---
+
+Fix table of content displaying arrow next to page with only hidden pages

packages/gitbook/src/components/TableOfContents/PageDocumentItem.tsx

@@ -6,7 +6,7 @@ import {
 } from '@gitbook/api';
 
 import { getPageHref } from '@/lib/links';
-import { getPagePath } from '@/lib/pages';
+import { getPagePath, hasPageVisibleDescendant } from '@/lib/pages';
 import { ContentRefContext } from '@/lib/references';
 import { tcls } from '@/lib/tailwind';
 
@@ -39,7 +39,7 @@ export async function PageDocumentItem(props: {
                     },
                 }}
                 descendants={
-                    page.pages && page.pages.length ? (
+                    hasPageVisibleDescendant(page) ? (
                         <PagesList
                             rootPages={rootPages}
                             pages={page.pages}

packages/gitbook/src/components/TableOfContents/PageGroupItem.tsx

@@ -1,5 +1,6 @@
 import { RevisionPage, RevisionPageDocument, RevisionPageGroup } from '@gitbook/api';
 
+import { hasPageVisibleDescendant } from '@/lib/pages';
 import { ContentRefContext } from '@/lib/references';
 import { tcls } from '@/lib/tailwind';
 
@@ -47,7 +48,7 @@ export function PageGroupItem(props: {
                 <TOCPageIcon page={page} />
                 {page.title}
             </div>
-            {page.pages && page.pages.length ? (
+            {hasPageVisibleDescendant(page) ? (
                 <PagesList
                     rootPages={rootPages}
                     pages={page.pages}

packages/gitbook/src/lib/pages.ts

@@ -121,6 +121,21 @@ export function getPagePath(
     return page.path;
 }
 
+/**
+ * Test if a page has at least one descendant.
+ */
+export function hasPageVisibleDescendant(page: RevisionPageGroup | RevisionPageDocument): boolean {
+    return (
+        page.pages.length > 0 &&
+        page.pages.some(
+            (child) =>
+                (child.type === RevisionPageType.Link ||
+                    child.type === RevisionPageType.Document) &&
+                !child.hidden,
+        )
+    );
+}
+
 /**
  * Resolve the first page document in a list of pages.
  */