webpack.config.js

var webpack = require('webpack');
var path = require('path');
var nodeExternals = require('webpack-node-externals');
var ExtractTextWebpackPlugin = require('extract-text-webpack-plugin');

module.exports = {
  entry: [
    './src/index'
  ],
  output: {
    path: path.join(__dirname, 'dist'),
    filename: '[name].js',
    libraryTarget: 'commonjs2'
  },
  externals: [nodeExternals()],
  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
        'NODE_ENV': JSON.stringify('production')
      }
    }),
    new ExtractTextWebpackPlugin('react-bootstrap-timezone-picker.min.css')
  ],
  module: {
    rules: [
      { test: /\.jsx?$/, use: 'babel-loader', exclude: /node_modules/ },
      { test: /\.json$/, use: 'json-loader',  exclude: /node_modules/ },
      { test: /\.css$/,  use: ExtractTextWebpackPlugin.extract({
          fallback: 'style-loader', 
          use: 'css-loader'
        }),
        exclude: /node_modules/
      }
    ]
  },
  resolve: {
    modules: [
      path.join(__dirname, 'src'),
      'node_modules'
    ],
    extensions: ['.js', '.jsx']
  }
};