Photon Realtime + React?

Hello! Apologies if this has been answered before but the docs seem pretty sparse and I searched the forum and haven't found an answer.

I'm trying to add Photon to my ReactJS app. Currently I'm doing the following:

import "./Photon/Photon-Javascript_SDK.js";
import React, { createContext, useEffect, useState } from 'react';

const App = () => {

  useEffect(() => {
      var client = Photon.LoadBalancing.LoadBalancingClient);
  }, []) 

(Removed some code of course.) But I'm getting this error:

'Photon' is not defined  no-undef

I've tried about a million ways of including the sdk. Anybody know what I might be doing wrong?