webpack.config.js

var path = require('path');
var webpack = require('webpack');

module.exports = {
  entry: './src/main.js',
  output: {
    path: path.join(__dirname, 'build'),
    filename: 'bundle.js'
  },
  devtool: 'cheap-module-source-map',
  module: {
    loaders: [
      {
        test: path.join(__dirname, 'src'),
        loader: 'babel-loader'
      }
    ]
  },
  plugins: [
    new webpack.optimize.UglifyJsPlugin({
      compress: {
          warnings: false
      }
    })
  ]
};