webpack.config.js

const jetpack = require('fs-jetpack');
const webpack = require('webpack');
const autoprefixer = require('autoprefixer');

module.exports = {
    entry: "./app/app.tsx",
    output: {
        filename: "./build/bundle.js",
    },

    // Enable sourcemaps for debugging webpack's output.
    devtool: "source-map",

    resolve: {
        // Add '.ts' and '.tsx' as resolvable extensions.
        extensions: ["", ".webpack.js", ".web.js", ".ts", ".tsx", ".js", '.scss'],
        packageMains: ['browser', 'web', 'browserify', 'main', 'style']
    },

    module: {
        loaders: [
            // All files with a '.ts' or '.tsx' extension will be handled by 'ts-loader'.
            {
                test: /\.tsx?$/,
                loader: "babel-loader?presets[]=es2015,presets[]=react!ts-loader"
            }, {
                test: /\.(scss|css)$/,
                loader: 'style!css?modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!postcss!sass'
            }
        ],

        preLoaders: [
            // All output '.js' files will have any sourcemaps re-processed by 'source-map-loader'.
            { test: /\.js$/, loader: "source-map-loader" }
        ],


    },

    // When importing a module whose path matches one of the following, just
    // assume a corresponding global variable exists and use that instead.
    // This is important because it allows us to avoid bundling all of our
    // dependencies, which allows browsers to cache those libraries between builds.
    externals: {
        "react": "React",
        "react-dom": "ReactDOM"
    },

    postcss: [autoprefixer],

    sassLoader: {
        data: '$unit: 0.8em;'
    },

    plugins: [
        new webpack.optimize.UglifyJsPlugin({
            compress: {
                warnings: false
            }
        })
    ],

    target: "electron",
    watch: true,
};