webpack.config.js

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

module.exports = {
    entry: [
        "babel-polyfill",  // For Promise on IE.
        "whatwg-fetch",  // For fetch on IE.
        "./webapp/index.tsx",
        "./webapp/scss/style.scss"
    ],
    output: {
        path: path.resolve("./webchat/static"),
        filename: "bundle.js"
    },
    resolve: {
        extensions: [".ts", ".tsx", ".js", ".jsx"]
    },
    devtool: "source-map",
    module: {
        rules: [
            {
                test: /\.jsx?$/,
                use: "babel-loader",
                exclude: /node_modules/
            },
            {
                test: /\.tsx?$/,
                use: ["babel-loader", "ts-loader"],
                exclude: /node_modules/
            },
            {
                test: /\.scss$/,
                use: ExtractTextPlugin.extract({
                    fallback: "style-loader",
                    use: [{
                        loader: "css-loader",
                        options: {
                            sourceMap: true
                        }
                    }, {
                        loader: "sass-loader",
                        options: {
                            sourceMap: true
                        }
                    }],
                    publicPath: "./webchat/static"
                }),
                exclude: /node_modules/
            }
        ]
    },
    plugins: [
        new ExtractTextPlugin({
            filename: "bundle.css",
            disable: false,
            allChunks: true
        })
    ]
};