Render (parsed) Markdown programmatically

[imphil]

I'm trying to create a RSS feed for my nuxt-content powered page.

This is roughly how it looks now:

const blogPosts = await serverQueryContent(event, '/blog')
  .sort({ date: -1 }) // show latest articles first
  .where({ _partial: false })
  .where({ _id: { $ne: 'content:blog:index.md' } }) // Filter out this page.
  .find()

for (const blogPost of blogPosts) {
  feed.item({
    title: blogPost.title ?? '-',
    url: `${cdnUrl}${blogPost._path}`,
    date: blogPost.date,
    description: blogPost.description,
  });
}

blogPost looks (expectedly) something like this:

{                                                                                                                                                                      _path: '/blog/2015-10-10-welcome',
  _dir: 'blog',
  _draft: false,
  _partial: false,
  _locale: '',
  _empty: false,
  title: 'Welcome ',
  description: '',
  excerpt: { type: 'root', children: [ [Object] ] },
  layout: 'post',
  category: null,
  tags: [],
  author: 'somebody',
  date: '2015-10-10T00:00:00.000Z',
  body: {
    type: 'root',
    children: [ [Object], [Object], [Object], [Object] ],
    toc: { title: '', searchDepth: 2, depth: 2, links: [] }
  },
  _type: 'markdown',
  _id: 'content:blog:2015-10-10-welcome.md',
  coverImage: null,
  _source: 'content',
  _file: 'blog/2015-10-10-welcome.md',
  _extension: 'md'
}

I now want to get the contents of body as rendered HTML to be able to insert it into my RSS feed, i.e. I want to programmatically do what <ContentSlot> would do.

How can I do that?