Why Isn't index: true Working to Show Files as Cards?

[kakarj]

I’m trying to use index: true to display all the files in a folder as cards on the index page, but it’s not working on my docs. Is this custom or am I missing something?

it's working fine in fumadocs:

[fuma-nama]

Use https://fumadocs.vercel.app/docs/ui/blocks/page#category

[kakarj]

I tried using this code:

{page.data.index ? <DocsCategory page={page} from={source} /> : null}  

from the Fumadocs repo, but it’s throwing the following error:

Property 'index' does not exist on type 'Omit<MarkdownProps, "title" | "icon" | "description" | "full" | "_openapi"> & { title: string; icon?: string | undefined; description?: string | undefined; full?: boolean | undefined; _openapi?: objectOutputType<...> | undefined; } & BaseCollectionEntry'.

It seems like index isn’t specified. How do I fix this and use this?

[fuma-nama]

It's a custom frontmatter data, see https://fumadocs.vercel.app/docs/mdx/collections#schema-1 to extend the schema