feat: code split & use react helmet

lib/webpack/client.js

@@ -0,0 +1,20 @@
+const path = require('path');
+const webpackNiceLog = require('webpack-nicelog');
+const {StatsWriterPlugin} = require('webpack-stats-plugin');
+const createBaseConfig = require('./base');
+
+module.exports = function createClientConfig(props) {
+  const config = createBaseConfig(props);
+
+  config.entry('main').add(path.resolve(__dirname, '../core/clientEntry.js'));
+
+  // write webpack stats object to a file so we can
+  // programmatically refer to the correct bundle path in Node.js server.
+  config
+    .plugin('stats')
+    .use(StatsWriterPlugin, [{filename: 'client.stats.json'}]);
+
+  config.plugin('niceLog').use(webpackNiceLog, [{name: 'Client'}]);
+
+  return config;
+};