react-date-picker: Webpack compilation error: Unexpected token . on ".react-calendar"

Hey guys, I recently upgraded to React 16, in a project based off of an earlier version of React Starter Kit. this lead me to upgrade react-date-picker which I am now getting the following error:

C:\workspace\cand-portal-front\node_modules\react-calendar\dist\Calendar.css:1
(function (exports, require, module, __filename, __dirname) { .react-calendar {
                                                              ^

SyntaxError: Unexpected token .
    at createScript (vm.js:80:10)
    at Object.runInThisContext (vm.js:139:10)
    at Module._compile (module.js:599:28)
    at Object.Module._extensions..js (module.js:646:10)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Module.require (module.js:579:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (C:\workspace\cand-portal-front\node_modules\react-date-picker\dist\entry.js:7:1)
    at Module._compile (module.js:635:30)
    at Object.Module._extensions..js (module.js:646:10)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Module.require (module.js:579:17)

Looks like it could be similar to whats expressed here: https://github.com/reactGo/reactGo/issues/850#issuecomment-299417219

my full webpack config is:

import path from 'path';
import webpack from 'webpack';
import extend from 'extend';
import AssetsPlugin from 'assets-webpack-plugin';

const isDebug = !process.argv.includes('--release');
const isVerbose = process.argv.includes('--verbose');

//
// Common configuration chunk to be used for both
// client-side (client.js) and server-side (server.js) bundles
// -----------------------------------------------------------------------------

const config = {
  context: path.resolve(__dirname, '../src'),

  output: {
    path: path.resolve(__dirname, '../build/public/assets'),
    publicPath: '/assets/',
    sourcePrefix: '  ',
  },

  module: {
    loaders: [
      {
        test: /\.jsx?$/,
        loader: 'babel-loader',
        include: [
          path.resolve(__dirname, '../src'),
        ],
        query: {
          // https://github.com/babel/babel-loader#options
          cacheDirectory: isDebug,

          // https://babeljs.io/docs/usage/options/
          babelrc: false,
          presets: [
            // Latest stable ECMAScript features
            // https://github.com/babel/babel/tree/master/packages/babel-preset-latest
            'latest',
            // Experimental ECMAScript proposals
            // https://github.com/babel/babel/tree/master/packages/babel-preset-stage-0
            'stage-0',
            // JSX, Flow
            // https://github.com/babel/babel/tree/master/packages/babel-preset-react
            'react',
            ...isDebug ? [] : [
              // Optimize React code for the production build
              // https://github.com/thejameskyle/babel-react-optimize
              'react-optimize',
            ],
          ],
          plugins: [
            // Externalise references to helpers and builtins,
            // automatically polyfilling your code without polluting globals.
            // https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-runtime
            'transform-runtime',
            ...!isDebug ? [] : [
              // Adds component stack to warning messages
              // https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-react-jsx-source
              'transform-react-jsx-source',
              // Adds __self attribute to JSX which React will use for some warnings
              // https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-react-jsx-self
              'transform-react-jsx-self',
            ],
          ],
        },
      },
      {
        test: /\.css/,
        loaders: [
          'isomorphic-style-loader',
          `css-loader?${JSON.stringify({
            // CSS Loader https://github.com/webpack/css-loader
            importLoaders: 1,
            sourceMap: isDebug,
            // CSS Modules https://github.com/css-modules/css-modules
            modules: true,
            localIdentName: isDebug ? '[name]-[local]-[hash:base64:5]' : '[hash:base64:5]',
            // CSS Nano http://cssnano.co/options/
            minimize: !isDebug,
          })}`,
          'postcss-loader?pack=default',
        ],
      },
      {
        test: /\.scss$/,
        loaders: [
          'isomorphic-style-loader',
          `css-loader?${JSON.stringify({ sourceMap: isDebug, minimize: !isDebug })}`,
          'postcss-loader?pack=sass',
          'sass-loader',
        ],
      },
      {
        test: /\.json$/,
        loader: 'json-loader',
      },
      {
        test: /\.txt$/,
        loader: 'raw-loader',
      },
      {
        test: /\.graphqls$/,
        loader: 'raw-loader',
      },
      {
        test: /\.(png|jpg|jpeg|gif|svg|woff|woff2)$/,
        loader: 'url-loader',
        query: {
          name: isDebug ? '[path][name].[ext]?[hash]' : '[hash].[ext]',
          limit: 10000,
        },
      },
      {
        test: /\.(eot|ttf|wav|mp3)$/,
        loader: 'file-loader',
        query: {
          name: isDebug ? '[path][name].[ext]?[hash]' : '[hash].[ext]',
        },
      },
    ],
  },

  resolve: {
    root: path.resolve(__dirname, '../src'),
    modulesDirectories: ['node_modules'],
    extensions: ['', '.webpack.js', '.web.js', '.js', '.jsx', '.json'],
  },

  cache: isDebug,
  debug: isDebug,

  stats: {
    colors: true,
    reasons: isDebug,
    hash: isVerbose,
    version: isVerbose,
    timings: true,
    chunks: isVerbose,
    chunkModules: isVerbose,
    cached: isVerbose,
    cachedAssets: isVerbose,
  },

  // The list of plugins for PostCSS
  // https://github.com/postcss/postcss
  postcss(bundler) {
    return {
      default: [
        // Transfer @import rule by inlining content, e.g. @import 'normalize.css'
        // https://github.com/jonathantneal/postcss-partial-import
        require('postcss-partial-import')({ addDependencyTo: bundler }),
        // Allow you to fix url() according to postcss to and/or from options
        // https://github.com/postcss/postcss-url
        require('postcss-url')(),
        // W3C variables, e.g. :root { --color: red; } div { background: var(--color); }
        // https://github.com/postcss/postcss-custom-properties
        require('postcss-custom-properties')(),
        // W3C CSS Custom Media Queries, e.g. @custom-media --small-viewport (max-width: 30em);
        // https://github.com/postcss/postcss-custom-media
        require('postcss-custom-media')(),
        // CSS4 Media Queries, e.g. @media screen and (width >= 500px) and (width <= 1200px) { }
        // https://github.com/postcss/postcss-media-minmax
        require('postcss-media-minmax')(),
        // W3C CSS Custom Selectors, e.g. @custom-selector :--heading h1, h2, h3, h4, h5, h6;
        // https://github.com/postcss/postcss-custom-selectors
        require('postcss-custom-selectors')(),
        // W3C calc() function, e.g. div { height: calc(100px - 2em); }
        // https://github.com/postcss/postcss-calc
        require('postcss-calc')(),
        // Allows you to nest one style rule inside another
        // https://github.com/jonathantneal/postcss-nesting
        require('postcss-nesting')(),
        // Unwraps nested rules like how Sass does it
        // https://github.com/postcss/postcss-nested
        require('postcss-nested')(),
        // W3C color() function, e.g. div { background: color(red alpha(90%)); }
        // https://github.com/postcss/postcss-color-function
        require('postcss-color-function')(),
        // Convert CSS shorthand filters to SVG equivalent, e.g. .blur { filter: blur(4px); }
        // https://github.com/iamvdo/pleeease-filters
        require('pleeease-filters')(),
        // Generate pixel fallback for "rem" units, e.g. div { margin: 2.5rem 2px 3em 100%; }
        // https://github.com/robwierzbowski/node-pixrem
        require('pixrem')(),
        // W3C CSS Level4 :matches() pseudo class, e.g. p:matches(:first-child, .special) { }
        // https://github.com/postcss/postcss-selector-matches
        require('postcss-selector-matches')(),
        // Transforms :not() W3C CSS Level 4 pseudo class to :not() CSS Level 3 selectors
        // https://github.com/postcss/postcss-selector-not
        require('postcss-selector-not')(),
        // Postcss flexbox bug fixer
        // https://github.com/luisrudge/postcss-flexbugs-fixes
        require('postcss-flexbugs-fixes')(),
        // Add vendor prefixes to CSS rules using values from caniuse.com
        // https://github.com/postcss/autoprefixer
        require('autoprefixer')(),
      ],
      sass: [
        require('autoprefixer')(),
      ],
    };
  },
};

//
// Configuration for the client-side bundle (client.js)
// -----------------------------------------------------------------------------

const clientConfig = extend(true, {}, config, {
  entry: './client.js',

  output: {
    filename: isDebug ? '[name].js?[chunkhash]' : '[name].[chunkhash].js',
    chunkFilename: isDebug ? '[name].[id].js?[chunkhash]' : '[name].[id].[chunkhash].js',
  },

  target: 'web',

  plugins: [

    // Define free variables
    // https://webpack.github.io/docs/list-of-plugins.html#defineplugin
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': isDebug ? '"development"' : '"production"',
      'process.env.BROWSER': true,
      __DEV__: isDebug,
    }),

    // Emit a file with assets paths
    // https://github.com/sporto/assets-webpack-plugin#options
    new AssetsPlugin({
      path: path.resolve(__dirname, '../build'),
      filename: 'assets.js',
      processOutput: x => `module.exports = ${JSON.stringify(x)};`,
    }),

    // Assign the module and chunk ids by occurrence count
    // Consistent ordering of modules required if using any hashing ([hash] or [chunkhash])
    // https://webpack.github.io/docs/list-of-plugins.html#occurrenceorderplugin
    new webpack.optimize.OccurrenceOrderPlugin(true),

    ...isDebug ? [] : [
      // Search for equal or similar files and deduplicate them in the output
      // https://webpack.github.io/docs/list-of-plugins.html#dedupeplugin
      new webpack.optimize.DedupePlugin(),

      // Minimize all JavaScript output of chunks
      // https://github.com/mishoo/UglifyJS2#compressor-options
      new webpack.optimize.UglifyJsPlugin({
        compress: {
          screw_ie8: true,
          warnings: isVerbose,
          unused: true
        },
      }),
    ],
  ],

  // Choose a developer tool to enhance debugging
  // http://webpack.github.io/docs/configuration.html#devtool
  devtool: isDebug ? 'source-map' : false,
});

//
// Configuration for the server-side bundle (server.js)
// -----------------------------------------------------------------------------

const serverConfig = extend(true, {}, config, {
  entry: './server.js',

  output: {
    filename: '../../server.js',
    libraryTarget: 'commonjs2',
  },

  target: 'node',

  externals: [
    /^\.\/assets$/,
    (context, request, callback) => {
      const isExternal =
        request.match(/^[@a-z][a-z/.\-0-9]*$/i) &&
        !request.match(/\.(css|less|scss|sss)$/i);
      callback(null, Boolean(isExternal));
    },
  ],

  plugins: [
    // Define free variables
    // https://webpack.github.io/docs/list-of-plugins.html#defineplugin
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': isDebug ? '"development"' : '"production"',
      'process.env.BROWSER': false,
      __DEV__: isDebug,
    }),

    // Adds a banner to the top of each generated chunk
    // https://webpack.github.io/docs/list-of-plugins.html#bannerplugin
    new webpack.BannerPlugin('require("source-map-support").install();',
      { raw: true, entryOnly: false }),

    // Do not create separate chunks of the server bundle
    // https://webpack.github.io/docs/list-of-plugins.html#limitchunkcountplugin
    new webpack.optimize.LimitChunkCountPlugin({ maxChunks: 1 }),
  ],

  node: {
    console: false,
    global: false,
    process: false,
    Buffer: false,
    __filename: false,
    __dirname: false,
  },

  devtool: 'source-map',
});

export default [clientConfig, serverConfig];

P.S. Not sure if I should be filing this issue with you guys or react-calendar Thanks!