webpack.config.js

'use strict'

const path = require('path')
const webpack = require('webpack')
const ExtractTextPlugin = require('extract-text-webpack-plugin')

module.exports = {
  devtool: 'source-map',
  entry: {
    main: './main.js',
    vendor: [
      'react',
      'react-dom'
    ]
  },
  output: {
    path: path.join(__dirname, 'build'),
    filename: '[name].js'
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: [
          'babel-loader'
        ]
      },
      {
        test: /\.css$/,
        exclude: /node_modules/,
        loader: 'css-loader'
      },
      {
        test: /\.scss$/,
        loader: ExtractTextPlugin.extract({
          fallbackLoader: 'style-loader',
          loader: 'css-loader!sass-loader'
        })
      }
    ]
  },
  node: {
    net: 'empty',
    tls: 'empty',
    dns: 'empty',
    fs: 'empty'
  },
  plugins: [
    new webpack.optimize.CommonsChunkPlugin({
      name: 'vendor'
    }),
    new ExtractTextPlugin({filename: '[name].css', allChunks: true})
  ]
}