create-account.js

import React from 'react'
import Link from 'next/link'
import { withApollo } from '../lib/apollo'
import redirect from '../lib/redirect'
import checkLoggedIn from '../lib/checkLoggedIn'
import RegisterBox from '../components/RegisterBox'

const CreateAccountPage = () => (
  <>
    {/* RegisterBox handles all register logic. */}
    <RegisterBox />
    <hr />
    Already have an account?{' '}
    <Link href='/signin'>
      <a>Sign in</a>
    </Link>
  </>
)

CreateAccountPage.getInitialProps = async context => {
  const data = await checkLoggedIn(context.apolloClient)

  if (data.me) {
    // If not signed in, send them somewhere more useful
    redirect(context, '/')
  }

  return {}
}

export default withApollo(CreateAccountPage)