title: istanbul with webpack, mocha
body: <p>I'm using mocha-webpack to run my tests for a react project.  The reason I"m not just specifying babel in the call to mocha is that I have jsx that references svg files and that blows up when I do it that way.  mocha-webpack works fine.  But I can't get it to work with istanbul.  I have replaced the babel-loader with bable-istanbul-loader, and the compiles and executes the tests but it doesn't output the coverage folder anywhere.</p>
  
  <p>Also, babel-istanbul seems to want to use karma, but I don't use karma since I'm testing in the browser.</p>
  
  <p>loader looks like this:</p>
  
  <pre><code> {
              test: /\.jsx?$/,
              exclude: /node_modules/,
              loader: 'babel-istanbul'
          },
  </code></pre>
  
  <p>package.config says</p>
  
  <pre><code>"test": "mocha-webpack --webpack-config ./app/webpack.config-testing.js",
  </code></pre>