Fix TypeError when childPages is undefined in generic-toc middleware (#59169)

heiskr · web-flow · commit deadfce464dd · 2026-01-21T18:50:17.000Z
diff --git a/src/frame/middleware/context/generic-toc.ts b/src/frame/middleware/context/generic-toc.ts
@@ -131,7 +131,7 @@ async function getTocItems(node: Tree, context: Context, opts: Options): Promise
   }
 
   return await Promise.all(
-    node.childPages.filter(filterHidden).map(async (child) => {
+    (node.childPages || []).filter(filterHidden).map(async (child) => {
       const { page } = child
       const title = await page.renderProp('rawTitle', context, { textOnly: true })
       const octicon = page.octicon ?? null

Original file line number	Diff line number	Diff line change
`@@ -131,7 +131,7 @@ async function getTocItems(node: Tree, context: Context, opts: Options): Promise`
`131`	`131`	`}`
`132`	`132`
`133`	`133`	`return await Promise.all(`
`134`		`- node.childPages.filter(filterHidden).map(async (child) => {`
	`134`	`+ (node.childPages \|\| []).filter(filterHidden).map(async (child) => {`
`135`	`135`	`const { page } = child`
`136`	`136`	`const title = await page.renderProp('rawTitle', context, { textOnly: true })`
`137`	`137`	`const octicon = page.octicon ?? null`