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@kamsar /index.js Secret
Created Aug 1, 2018

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import React from 'react';
import ReactDOM from 'react-dom';
import { BrowserRouter } from 'react-router-dom';
import AppRoot from './AppRoot';
import { setServerSideRenderingState } from './RouteHandler';
import GraphQLClientFactory from './lib/GraphQLClientFactory';
import config from './temp/config';
import i18ninit from './i18n';
// [CS] ADDED FOR CODE SPLITTING
import Loadable from 'react-loadable';
/* eslint-disable no-underscore-dangle */
let renderFunction = ReactDOM.render;
/*
SSR Data
If we're running in a server-side rendering scenario,
the server will provide the window.__JSS_STATE__ object
for us to acquire the initial state to run with on the client.
This enables us to skip a network request to load up the layout data.
SSR is initiated from /server/server.js.
*/
if (window.__JSS_STATE__) {
// push the initial SSR state into the route handler, where it will be used
setServerSideRenderingState(window.__JSS_STATE__);
// when React initializes from a SSR-based initial state, you need to render with `hydrate` instead of `render`
renderFunction = ReactDOM.hydrate;
}
/*
GraphQL Data
The Apollo Client needs to be initialized to make GraphQL available to the JSS app.
Not using GraphQL? Remove this, and the ApolloContext from `AppRoot`.
*/
// Apollo supports SSR of GraphQL queries, so like JSS SSR, it has an object we can pre-hydrate the client cache from
// to avoid needing to re-run GraphQL queries after the SSR page loads
const initialGraphQLState =
window.__JSS_STATE__ && window.__JSS_STATE__.APOLLO_STATE
? window.__JSS_STATE__.APOLLO_STATE
: null;
const graphQLClient = GraphQLClientFactory(config.graphQLEndpoint, false, initialGraphQLState);
/*
App Rendering
*/
// initialize the dictionary, then render the app
// note: if not making a multlingual app, the dictionary init can be removed.
i18ninit()
// [CS] ADDED FOR CODE SPLITTING
.then(() => Loadable.preloadReady())
.then(() => {
// HTML element to place the app into
const rootElement = document.getElementById('root');
renderFunction(
<AppRoot
path={window.location.pathname}
Router={BrowserRouter}
graphQLClient={graphQLClient}
/>,
rootElement
);
});
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