webpack.test..js

const webpack = require('webpack');
const ExtractTextPlugin = require("extract-text-webpack-plugin");

const extractSass = new ExtractTextPlugin({
    filename: "/css/styles.css"
})

module.exports = {
    entry: './src/index.ts',
    devtool: 'source-map',
    module: {
        rules: [
            {
                test: /\.tsx?$/,
                use: {
                    loader: 'ts-loader'
                }
            },
            {
                test: /\.css$/,
                use: extractSass.extract({
                    use: [
                        {
                            loader: 'css-loader',
                            options: {
                                sourceMap: true
                            }
                        }
                    ]
                })
            }
        ]
    },
    plugins: [
        extractSass
    ],
    output: {
        path: __dirname + '/www/',
        filename: 'js/bundle.js'
    }
}