Add support for async excerpt functions? about gray-matter HOT 2 OPEN

Why should gray-matter be responsible for this? This is indeed not supported and would be a breaking change as it will forcethe main matter parse function to become async.
Can't you do sth like below?

async function fetchExcerptForFile(file) { /* do async stuff & return promise with excerpt */ }

// assuming files is an arr of { content: '...', filepath: '...' } or such
const parsedFiles = await Promise.all(files.map(async file => {
  const excerpt = await fetchExcerptForFile(file)
  return matter(file.content, { excerpt: () => excerpt })
}))

from gray-matter.

@webketje Yeah, sorry. We are using Eleventy which uses gray-matter for front-matter parsing and I think we were trying to generate excerpts and wanting to re-parse them using LiquidJS or something and an async parser for excerpt() would have helped out. But we found an alternate approach using shortcodes and filters.

from gray-matter.