TodoList.js

import {createFragmentContainer, graphql} from 'react-relay'
// ...
export default createFragmentContainer(TodoList, {
  viewer: graphql`
    fragment TodoList_viewer on Viewer {
      allTodoes(last: 1000) {
        edges {
          node {
            id,
            complete,
            ...Todo_todo,
          },
        },
      },
      ...Todo_viewer,
    }
  `,
})