webpack.config.js

const path = require('path');
const merge = require('webpack-merge');
const webpack = require('webpack');
const cssnext = require('postcss-cssnext');
const cssreporter = require('postcss-reporter');

const ExtractTextPlugin = require('extract-text-webpack-plugin');
const StaticSiteGeneratorPlugin = require('static-site-generator-webpack-plugin');

const PATHS = {
  bundle: path.join(__dirname, 'src', 'bundle', 'index'),
  static: path.join(__dirname, 'src', 'static', 'index'),
  public: path.join(__dirname, 'public')
};

const common = {
  output: {
    path: PATHS.public,
    filename: '[name].js',
    library: '[name]',
    libraryTarget: 'umd',
    umdNamedDefine: true
  },
  module: {
    loaders: [
      {
        test: /\.js$/,
        loader: 'babel',
        exclude: /node_modules/,
        query: {
          presets: ["es2015"],
          plugins: ["transform-object-rest-spread"]
        }
      },
      {
        test: /\.css$/,
        loader: ExtractTextPlugin.extract('style-loader', 'css-loader!postcss-loader')
      },
      {test: /\.json$/, loader: 'json'},
      {test: /\.html$/, loader: 'html'},
      {test: /\.md$/, loader: 'html!markdown'}
    ]
  },
  postcss: function() {
    return [cssnext, cssreporter];
  },
  plugins:[
    new ExtractTextPlugin('main.css')
  ]
};

const static = merge(common, {
  entry: {
    static: PATHS.static
  },
  target: 'node',
  plugins: [
    new StaticSiteGeneratorPlugin('static', ['/'])
  ]
});

const bundle = merge(common, {
  entry: {
    bundle: PATHS.bundle
  }
});

const configs = {
  start: [static, bundle],
  watch: [static, merge(bundle, {
    entry: {
      bundle: [PATHS.bundle, 'webpack-dev-server/client?http://localhost:8081']
    },
    // HACK:
    //   the socket.io client library references these two libs...
    //   ...and webpack doesn't like it, as we're targeting the browser
    resolve: {
      aliases: {
        fs: false,
        net: false
      }
    }
    // XXX:
    //   webpack-dev-server doesn't pick up config when returning an array...
    //   ...so we have to put it in the npm watch script directly
    // ,
    // devServer: {
    //   host: 'localhost',
    //   port: 8081,
    //   contentBase: PATHS.public
    // }
  })],
  build: [static, merge(bundle, {
    output: {
      filename: 'bundle.js'
    },
    plugins: [
      new webpack.optimize.UglifyJsPlugin()
    ]
  })]
};

module.exports = configs[process.env.npm_lifecycle_event] || configs.watch;