index-4.js

import { client } from './client'
import gql from 'graphql-tag'

const query = gql`
  query Post ($id: Int!) {
    post (id: $id) {
      id
      title
      body
      author {
        id
        username
        email
      }
    }
  }
`

client.query({ query, variables: { id: 1 } }).then(console.log)