code: function captureJsDoc(comments) {
    let doc
  
    // capture XSDoc
    comments.forEach(comment => {
      // skip non-block comments
      if (comment.type !== 'Block') return
      try {
        doc = doctrine.parse(comment.value, { unwrap: true })
      } catch (err) {
        /* don't care, for now? maybe add to `errors?` */
      }
    })
  
    return doc
  }
docs: parse JSDoc from leading comments
  @param  {...[type]} comments [description]
  @return {{doc: object}}