Use webpack

webpack.config.js

@@ -0,0 +1,29 @@
+const path = require('path');
+
+module.exports = {
+    entry: './client/index.jsx',
+    output: {
+        path: path.join(__dirname, 'public'),
+        filename: 'bundle.js',
+    },
+    module: {
+        rules: [
+            {
+                test: /\.jsx?$/,
+                exclude: /node_modules/,
+                loader: 'babel-loader',
+            },
+            {
+                test: /\.css$/,
+                use: ['style-loader', 'css-loader'],
+            },
+        ],
+    },
+    resolve: {
+        extensions: ['.js', '.jsx'],
+    },
+    devtool: 'cheap-module-eavl-source-map',
+    devServer: {
+        contentBase: path.join(__dirname, 'public')
+    },
+};