webpack.config.js

const path = require('path');

module.exports = {
  entry: {
    main:['babel-polyfill', './lib/index.js'],
    test: "mocha!./test/index.js"
  },
  output: {
    path: path.join(__dirname, 'public'),
    publicPath: '/public/',
    filename: "[name].bundle.js"
  },
  module: {
    loaders: [
      { test: /\.jsx?$/,
        exclude: /(node_modules|bower_components)/,
        loader: 'babel',
        query: {
          presets: ['es2015', 'react'],
        },
      },
      { test: /\.(jpe?g|png|gif|svg)$/i,
      loaders: [
          'file?hash=sha512&digest=hex&name=[hash].[ext]',
          'image-webpack?bypassOnDebug&optimizationLevel=7&interlaced=false'
        ]
      },
      { test: /\.css$/, loader: "style!css" },
      { test: /\.scss$/, loader: "style!css!sass" }
    ]
  },
  resolve: {
    extensions: ['', '.js', '.json', '.scss', '.css']
  }
};