Add Last Updated Time to sitemap

[otium-dev]

Hello,
Thanks for fumadocs, i really love this project.

I can't manage to add "Last Updated Time" in my sitemap.ts.

I follow the docs to add "lastUpdate={new Date(lastModifiedTime)}" do DocsPage but i get an "[ Server ] Error: lastModifiedTime is not defined" error.

This is my sitemap.ts file :

import type { MetadataRoute } from 'next';

import { baseUrl } from '@/lib/metadata';
import { source } from '@/lib/source';

export const revalidate = false;

export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
  const url = (path: string): string => new URL(path, baseUrl).toString();

  return [
    {
      url: url('/'),
      changeFrequency: 'monthly',
      priority: 1,
    },
    {
      url: url('/docs'),
      changeFrequency: 'monthly',
      priority: 0.8,
    },
    ...(await Promise.all(
      source.getPages().map(async (page) => {
        const { lastModified } = await page.data.load();
        return {
          url: url(page.url),
          lastModified: lastModified ? new Date(lastModified) : undefined,
          changeFrequency: 'weekly',
          priority: 0.5,
        } as MetadataRoute.Sitemap[number];
      })
    )),
  ];
}

Can someone show me how to do this ? Thank you!

[fuma-nama]

That property only exists for Fumadocs MDX with lastModifiedTime enabled. Be careful that most hosting platforms do shallow clone for GitHub repo, you need to disable that.

[otium-dev]

Okay, I didn't understand that. Thanks for the explanations.
Is there any way to add an updated <lastmod> to sitemap.ts with fumadocs framework ?

[fuma-nama]

Or just use this to get the last modified time from GitHub
https://fumadocs.vercel.app/docs/headless/utils/git-last-edit#usage