webpack.config.prod.js

import webpack from 'webpack';
import path from 'path';
import ExtractTextPlugin from 'extract-text-webpack-plugin';

const GLOBALS = {
    'process.env.NODE_ENV': JSON.stringify('production'), //This global makes sure React is built in prod mode. https://facebook.github.io/react/downloads.html
    __DEV__: false // potentially useful for feature flags. More info: https://github.com/petehunt/webpack-howto#6-feature-flags
};

export default {
    debug: true,
    devtool: 'source-map', // more info:https://webpack.github.io/docs/build-performance.html#sourcemaps and https://webpack.github.io/docs/configuration.html#devtool
    noInfo: true, // set to false to see a list of every file being bundled.
    entry: './src/index',
    target: 'web',
    output: {
        path: __dirname + '/dist', // Note: Physical files are only output by the production build task `npm run build`.
        publicPath: '/',
        filename: 'bundle.js'
    },
    devServer: {
        contentBase: './dist'
    },
    plugins: [
        new webpack.optimize.OccurenceOrderPlugin(),
        new webpack.DefinePlugin(GLOBALS),
        new ExtractTextPlugin('styles.css'),
        new webpack.optimize.DedupePlugin(),
        new webpack.optimize.UglifyJsPlugin()
    ],
    module: {
        loaders: [
            { test: /\.js$/, include: path.join(__dirname, 'src'), loaders: ['babel'] },
            { test: /(\.css)$/, loader: ExtractTextPlugin.extract("css?sourceMap") },
            { test: /\.eot(\?v=\d+\.\d+\.\d+)?$/, loader: "file" },
            { test: /\.(woff|woff2)$/, loader: "url?prefix=font/&limit=5000" },
            { test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/, loader: "url?limit=10000&mimetype=application/octet-stream" },
            { test: /\.svg(\?v=\d+\.\d+\.\d+)?$/, loader: "url?limit=10000&mimetype=image/svg+xml" }
        ]
    }
};