webpack.config.js

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

module.exports = {
  entry: './index.js',
  output: {
    path: path.resolve(__dirname, './dist'),
    publicPath: '/dist/',
    filename: 'spotr.min.js',
    library: 'Spotr',
    libraryTarget: 'umd'
  },
  externals: {
    "lodash": {
      commonjs: "lodash",
      commonjs2: "lodash",
      amd: "lodash",
      root: "_"
    }
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      }
    ]
  },
  resolve: {
    alias: {      
      'src': path.resolve(__dirname, 'src')
    }
  },
  devServer: {
    historyApiFallback: true,
    noInfo: true
  },
  performance: {
    hints: false
  },
  devtool: '#eval-source-map'
}

if (process.env.NODE_ENV === 'production') {
  module.exports.devtool = '#source-map'
  module.exports.plugins = (module.exports.plugins || []).concat([
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: '"production"'
      }
    }),
    new webpack.optimize.UglifyJsPlugin({
      // sourceMap: true,
      compress: {
        warnings: false
      }
    }),
    new webpack.LoaderOptionsPlugin({
      minimize: true
    })
  ])
}