webpack.config.dev.js

const path = require('path')
const webpack = require('webpack')
const HtmlWebpackPlugin = require('html-webpack-plugin')

module.exports = {
  devtool: 'cheap-module-eval-source-map',
  entry: [
    'webpack-hot-middleware/client',
    'babel-polyfill',
    './src/index'
  ],
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'bundle_[hash].js',
    publicPath: 'http://localhost:3000/'
  },
  plugins: [
    new HtmlWebpackPlugin({ template: 'html!./src/index.html', favicon: 'images/favicon.ico' }),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoErrorsPlugin(),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': '"development"'
    })
  ],
  module: {
    loaders: [
      {
        test: /\.js?/,
        exclude: [ /node_modules/, /styles/ ],
        loaders: [ 'babel' ],
        include: path.join(__dirname, 'src')
      },
      {
        test: /\.global\.css$/,
        loaders: [
          'style-loader',
          'css-loader?sourceMap'
        ]
      },
      {
        test: /^((?!\.global).)*\.css$/,
        loaders: [
          'style-loader',
          'css-loader?modules&sourceMap&importLoaders=1&localIdentName=[name]_[local]_[hash:base64]'
        ]
      },
      {
        test: /\.(woff|woff2|eot|ttf|svg)$/,
        loader: 'file-loader'
      },
      {
        test: /\.(png|jpg)$/, loader: 'file-loader?name=images/[name].[ext]'
      }
    ]
  }
}