Vulcan/packages/example-forum/lib/modules/comments/fragments.js

import { registerFragment } from 'meteor/vulcan:core';

// ----------------------------- Comments ------------------------------ //

registerFragment(`
  fragment CommentsList on Comment {
    # vulcan:comments
    _id
    postId
    parentCommentId
    topLevelCommentId
    body
    htmlBody
    postedAt
    # vulcan:users
    userId
    user {
      ...UsersMinimumInfo
    }
    # vulcan:posts
    post {
      _id
      commentCount
      commenters {
        ...UsersMinimumInfo
      }
    }
    # vulcan:voting
  }
`);