prod.config.js

import merge from "lodash/object/merge";
import webpack from "webpack";
import ExtractTextPlugin from "extract-text-webpack-plugin";
import * as config from "./config";
import writeStats from "./utils/write-stats";

export const client = merge({}, config.client, {
  devtool: "source-map",
  output: {
    filename: "[name]-[hash:8].js",
    chunkFilename: "[name]-[chunkhash:8].js",
  },
  module: {
    loaders: config.client.module.loaders.concat([
      {
        test: /\.jsx?$/,
        loaders: ["babel"],
        exclude: /node_modules/,
      },
      {
        test: /\.css$/,
        loader: ExtractTextPlugin.extract("style", "css!postcss"),
      },
      {
        test: /\.styl$/,
        loader: ExtractTextPlugin.extract("style", "css!postcss!stylus"),
      },
    ]),
  },
  plugins: config.client.plugins.concat([
    // extract css files
    new ExtractTextPlugin("[name]-[contenthash:8].css", {
      allChunks: true,
    }),

    // optimize
    new webpack.optimize.CommonsChunkPlugin("vendor", "vendor-[hash:8].js"),
    new webpack.optimize.DedupePlugin(),
    new webpack.optimize.OccurenceOrderPlugin(),
    new webpack.optimize.UglifyJsPlugin({
      compress: {
        warnings: false,
      },
    }),
    // stats
    function() {
      this.plugin("done", writeStats);
    },
  ]),
});

export const server = merge({}, config.server, {
  output: {
    pathinfo: true,
  },
  module: {
    loaders: config.server.module.loaders.concat([
      {
        test: /\.jsx?$/,
        loader: "babel",
        exclude: /node_modules/,
      },
      {
        test: /\.css$/,
        loader: "null",
      },
      {
        test: /\.styl$/,
        loader: "null",
      },
    ]),
  },
  plugins: config.server.plugins.concat([
    new webpack.NoErrorsPlugin(),

    // optimize
    new webpack.optimize.DedupePlugin(),
    new webpack.optimize.OccurenceOrderPlugin(),
    new webpack.optimize.UglifyJsPlugin({
      compress: {
        warnings: false,
      },
    }),
  ]),
});

export default [
  client,
  server,
];