webpack.config.dev.js

import webpack from 'webpack';

module.exports = {
  entry: ['webpack-hot-middleware/client', './client/src/index.js'],
  output: {
    path: `${__dirname}/dist`,
    publicPath: '/',
    filename: 'bundle.js'
  },
  module: {
    loaders: [
      {
        test: /\.(js|jsx)$/,
        loader: 'babel-loader',
        exclude: /node_modules\//,
        query: {
          presets: ['react', 'es2015'],
          plugins: [
            'react-html-attrs',
            'transform-decorators-legacy',
            'transform-class-properties'],
        }
      },
      {
        test: /\.css$/,
        loader: [
          'style-loader',
          'css-loader?importLoaders=1',
          'font-loader?format[]=truetype&format[]=woff&format[]=embedded-opentype'
        ]
      },
      {
        test: /\.(ttf|otf|eot|svg|woff(2)?)(\?[a-z0-9]+)?$/,
        loader: 'file-loader?name=/fonts/[name].[ext]'
      },
      {
        test: /\.scss$/,
        loader: 'style-loader!css-loader!sass-loader'
      }
    ]
  },
  resolve: {
    extensions: ['.js', '.jsx']
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoEmitOnErrorsPlugin(),
    new webpack.optimize.ModuleConcatenationPlugin()
  ],
  devServer: {
    historyApiFallback: true,
    contentBase: './',
    hot: true
  },
};