@berun/runner-mdx-frontmatter/src/index.ts

BeRun runner for using yaml frontmatter with MDX documentation applications

import Berun from '@berun/berun'

export default (berun: Berun, options = {}) => {
  if (!('webpack' in berun)) {
    throw new Error(
      'MDX FrontMatter files only supported by webpack runners currently'
    )
  }

  berun.when('webpack' in berun, (berun) =>
    berun.use(require('./webpack-preset').default, options)
  )
}