Submit.js

// Editor.js

const LOGIN = gql`
  mutation login {
    login(email:"${faker.internet.email}") 
  }
`

const Submit = (props) => {
  return <Mutation mutation={LOGIN} update={(cache, { data }) => sessionStorage.setItem('auth', data.login)}>
    {
      mLogin => {
        if (!sessionStorage.auth) mLogin()
        return <Mutation mutation={BOOK}>
          {mBook => (
            <input type="submit" value="Submit Changes"
              onClick={evt => submitChanges(evt, mBook)} />
          )}
        </Mutation>
      }
    }
  </Mutation>
};

// App.js
const client = new ApolloClient({uri: 'http://localhost:4000/', headers: {authorization: sessionStorage.getItem('auth')}})