React OAuth 2 user store with Hello.js

gistfile1.js

// dependencies ----------------------------------------------------------------------

import Reflux  from 'reflux';
import Actions from '../actions/Actions';
import request from 'superagent';
import config  from '../config';

let UserStore = Reflux.createStore({

// store setup -----------------------------------------------------------------------

	listenables: Actions,

	/**
	 * Init
	 *
	 * Initializes hello.js with the google client ID when
	 * the store initializes.
	 */
	init: function () {
		hello.init({google: config.auth.google.clientID});
	},

// Actions ---------------------------------------------------------------------------

	/**
	 * Log In
	 *
	 * Starts the google OAuth2 sign in flow.
	 */
	signIn: function () {
		let self = this;
		hello('google').login({scope: 'email,openid'}, function (userdata) {
			self.data = userdata; // ???????????????????????????????????????????????????
			console.log('signin success');
		}, function () {
			console.log('signin failure');
		});
	},

	/**
	 * Sign Out
	 *
	 * Signs the user out by destroying the current
	 * OAuth2 session.
	 */
	signOut: function () {
		hello('google').logout().then(function () {
			console.log('signout success');
		}, function (e) {
			console.log('signout failure');
			console.log(e);
		});
	},

	/**
	 * Log Token
	 *
	 * Logs the current google access token stored in local storage.
	 */
	logToken: function () {
		console.log(JSON.parse(window.localStorage.hello).google.access_token);
	},
	
	/**
	 * Get User Data
	 *
	 */
	 getUserData: function () {
	 	return this.data; // ???????????????????????????????????????????????????
	 }

});

export default UserStore;