Demo webpack config for a production build

webpack.config.js

/* Demo webpack config for a production build
This setup can be further combined with tree-shaking and async code splitting for best results */

const path = require('path'),
    webpack = require('webpack'),
    buildPath = '../public/assets/js/builds/',
    ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = [{

    // Entry point
    entry: {
        outer: path.join(__dirname, 'app/outer.js')
    },

    // Output
    output: {
        path: path.join(__dirname, buildPath),
        filename: '[name].js'
    },

    // ES6 Module resolution
    resolve: {
        alias: {
            react: path.resolve('./node_modules/react'),
            React: path.resolve('./node_modules/react'),
        },
        modules: ['./components/', './components/outer', './components/shared', 'node_modules'],
        extensions: ['.js', '.jsx', '.css']
    },

    // Loader setup
    module: {
        loaders: [{
                test: /.jsx?$/,
                loader: 'babel-loader', // babel-loader for ES6 and jsx files
                exclude: /node_modules/,
                query: {
                    presets: ['es2015', 'react', 'stage-2']
                }
            },
            {
                test: /\.css$/,
                loader: ['css-loader'], // css-loader for css files
                use: ExtractTextPlugin.extract({
                    use: 'css-loader'
                })
            }
        ]
    },

    // Plugins
    plugins: [
        new webpack.optimize.UglifyJsPlugin(), // Minification plugin

        new webpack.DefinePlugin({
            'process.env.NODE_ENV': JSON.stringify('production') // Node Env production flag
        }),

        new ExtractTextPlugin('./build/app-styles.css'), // CSS code splitting 

        new webpack.optimize.CommonsChunkPlugin({
            name: 'vendor',
            minChunks: function(module) {
                return module.context && module.context.indexOf('node_modules') !== -1; // Vendor bundle creation (all modules included from node_modules)
            }
        })
    ]
}];