webpack.config.js

var path = require("path")
var webpack = require('webpack')
var BundleTracker = require('webpack-bundle-tracker')

module.exports = {
  context: __dirname,

  entry: './assets/js/index', // entry point of our app. assets/js/index.js should require other js modules and dependencies it needs

  output: {
      path: path.resolve('./assets/bundles/'),
      filename: "[name]-[hash].js",
  },

  plugins: [
    new BundleTracker({filename: './webpack-stats.json'}),
  ],

  module: {
    loaders: [
      { test: /\.jsx?$/, exclude: /node_modules/, loader: 'babel-loader'}, // to transform JSX into JS
      {
                test: /\.css$/,
                loader:'style!css!'
        },
        {
          test: /\.(png|jpg|gif)$/,
          loader:
            'file-loader'
        },
    ],
    rules:[
        { test: /\.css$/, use: [ 'style-loader', 'css-loader' ] },
      {
        test: /\.(png|jpg|gif)$/,
        use: [
          {
            loader: 'file-loader',
            options: {}
          }
        ]
      },

    ],

  },

  resolve: {
    modulesDirectories: ['node_modules', 'bower_components'],
    extensions: ['.js', '.jsx']
  },
}