title: Webpack dev server and css modules
body: <p>I can make <strong><em>css modules</em></strong> to work, but not in the hot-reload.</p>
  
  <p>When first loaded, the style appears the way it should:</p>
  
  <p><a href="https://i.stack.imgur.com/QjMsX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QjMsX.png" alt="Class names with css modules"></a></p>
  
  <p>But after making changes to the css file it breaks, and a full reload is needed:</p>
  
  <p><a href="https://i.stack.imgur.com/veRoY.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/veRoY.png" alt="Hot reload not working for css modules"></a></p>
  
  <p>I'm using the css modules as shown below:</p>
  
  <p><a href="https://i.stack.imgur.com/5AZMc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5AZMc.png" alt="css import"></a></p>
  
  <p><strong>webpack.config.js</strong></p>
  
  <pre class="lang-js prettyprint-override"><code>const path = require('path');
  const HtmlWebpackPlugin = require('html-webpack-plugin');
  
  const pack = {
    entry: [
      path.join(__dirname, 'src/app/index.js'),
    ],
    output: {
      path: path.join(__dirname, '/dist/'),
      filename: '[name].js',
      publicPath: '/',
    },
    plugins: [
      new HtmlWebpackPlugin({
        template: 'src/app/index.html',
        inject: 'body',
        filename: 'index.html',
      }),
    ],
    module: {
      loaders: [
        {
          test: /\.css$/,
          include: /src\/app/,
          loaders: [
            'style?sourceMap',
            'css?modules&amp;importLoaders=1&amp;localIdentName=[path]___[name]__[local]___[hash:base64:5]',
          ],
        },
        {
          test: /\.js?$/,
          include: /src\/app/,
          loader: 'babel',
        },
        {
          test: /\.woff(2)?(\?[a-z0-9#=&amp;.]+)?$/,
          loader: 'url?limit=10000&amp;mimetype=application/font-woff',
        },
        {
          test: /\.(ttf|eot|svg)(\?[a-z0-9#=&amp;.]+)?$/,
          loader: 'file',
        },
      ],
    },
  };
  
  module.exports = pack;
  </code></pre>
  
  <p><strong>webpack.development.config.js</strong></p>
  
  <pre><code>const webpack = require('webpack');
  
  const pack = require('./webpack.config');
  
  pack.entry.unshift('react-hot-loader/patch');
  pack.entry.unshift('webpack/hot/only-dev-server');
  pack.entry.unshift('webpack-dev-server/client?http://localhost:3000');
  
  pack.plugins.push(new webpack.HotModuleReplacementPlugin());
  pack.plugins.push(new webpack.DefinePlugin({
    'process.env.NODE_ENV': JSON.stringify('development'),
  }));
  
  module.exports = pack;
  </code></pre>
  
  <p>As I have noticed, the css class that it tries to fetch in the component stills the same, shouldn't a new hash be generated for each file change/reload?</p>