sass-loader-webpack.js

{
    test: /\.scss$/,
    loader: ExtractTextPlugin.extract({
        loader: [
            {
                loader: 'css-loader',
                query: {
                    localIdentName: '[hash:8]',
                    modules: true
                }
            },
            {
                loader: 'sass-loader'
            }
        ]
    })
}