rsnext/examples/with-relay-modern/components/BlogPostPreview.js

import { createFragmentContainer, graphql } from 'react-relay'

const BlogPostPreview = ({ post }) => <li>{post.title}</li>

export default createFragmentContainer(BlogPostPreview, {
  post: graphql`
    fragment BlogPostPreview_post on BlogPost {
      id
      title
    }
  `,
})