import React from 'react'; import ReactDOM from 'react-dom'; import { App } from './App.js'; import { StateTree } from './StateTree.js'; import { GET } from './xhr.js'; window.initApp = function(data) { const st = new StateTree({ doQuery: (cb) => { GET('/data', {}, (r, d) => { cb(d); }); }, }); if (data) { st.import(data); } ReactDOM.hydrate( , document.getElementById('app') ); };