webpack.config.js

var path = require('path');
var CopyWebpackPlugin = require('copy-webpack-plugin');

module.exports = {
    entry: "./src/index.tsx",
    output: {
        filename: "bundle.js",
        path: path.join(__dirname, "dist")
    },

    // Enable sourcemaps for debugging webpack's output.
    devtool: "source-map",
    devServer: {
        contentBase: path.join(__dirname, '/dist'),
        port: 8080,
    },
    resolve: {
        // Add '.ts' and '.tsx' as resolvable extensions.
        extensions: [".ts", ".tsx", ".js", ".json", ".css"]
    },

    module: {
        rules: [
            // All files with a '.ts' or '.tsx' extension will be handled by 'awesome-typescript-loader'.
            {
                test: /\.tsx?$/,
                loader: "awesome-typescript-loader"
            },
            {
                test: /\.css$/,
                use: ['style-loader', 'css-loader']
            },
            // All output '.js' files will have any sourcemaps re-processed by 'source-map-loader'.
            {
                enforce: "pre",
                test: /\.js$/,
                loader: "source-map-loader"
            }
        ]
    },
    plugins: [
        new CopyWebpackPlugin([{
                from: "src/static"
            },
            {
                from: "node_modules/react/dist/react.js"
            },
            {
                from: "node_modules/react-dom/dist/react-dom.js"
            }
        ])
    ],
    // 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"
    },
};