webpack.config.js

const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const DashboardPlugin = require('webpack-dashboard/plugin');
const nodeExternals = require('webpack-node-externals');

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

module.exports = {
 // devtool: 'source-map',
  entry: [
    'babel-polyfill',
    'webpack/hot/dev-server',
    './src',
  ],
  output: {
    path: path.resolve('./dist'),
    filename: 'index.js',
    library: 'weightedPick',
    libraryTarget: 'umd',
    umdNamedDefine: true,
  },
  target: 'node',
  externals: [nodeExternals()],
  resolve: {
    modulesDirectories: ['node_modules'],
    extensions: ['', '.js'],
  },
  module: {
    loaders: [
      {
        test: [/\.js?$/],
        exclude: [/node_modules/, '/**/*.test.js'],
        loader: 'babel',
        query: {
          presets: ['env'],
        },
      },
    ],
  },
  plugins: [
    new webpack.NoErrorsPlugin(),
    new webpack.HotModuleReplacementPlugin(),
    new BundleAnalyzerPlugin(),
    new DashboardPlugin(),
  ],
};