webpack.config.js

const path = require("path");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");

module.exports = {
    mode: "production",
    target: "node",
    entry: path.resolve(__dirname, "index.js"),
    output: {
        path: path.resolve(__dirname, "./dist"),
        filename: "index.js",
        library: "data-transparency-ui",
        libraryTarget: "umd"
    },
    resolve: {
        extensions: [".js", ".jsx"],
        modules: ["node_modules", path.resolve(__dirname, ".storybook/components")]
    },
    module: {
        rules: [
            {
                test: /\.js$|jsx$/,
                exclude: /node_modules/,
                loader: "babel-loader",
                options: {
                    presets: ["@babel/preset-env", "@babel/react"]
                }
            },
            {
                test: /\.scss$/,
                use: [
                    { loader: MiniCssExtractPlugin.loader },
                    { loader: "css-loader", options: { url: false, sourceMap: true } },
                    {
                        loader: "postcss-loader",
                        options: {
                            indent: "postcss",
                            plugins: [require("autoprefixer")]
                        }
                    },
                    {
                        loader: "sass-loader"
                    }
                ]
            }
        ]
    },
    externals: {
        // Don't bundle any of these packages, the consumer needs to install these
        react: {
            commonjs: "react",
            commonjs2: "react",
            amd: "React",
            root: "React"
        },
        "react-dom": {
            commonjs: "react-dom",
            commonjs2: "react-dom",
            amd: "ReactDOM",
            root: "ReactDOM"
        },
        lodash: {
            commonjs: "lodash",
            commonjs2: "lodash",
            amd: "lodash",
            root: "lodash"
        },
        accounting: {
            commonjs: "accounting",
            commonjs2: "accounting",
            amd: "accounting",
            root: "accounting"
        },
        "prop-types": {
            commonjs: "prop-types",
            commonjs2: "prop-types",
            amd: "prop-types",
            root: "prop-types"
        }
    },
    plugins: [
        new MiniCssExtractPlugin({
            filename: "data-transparency-ui.css"
        })
    ]
};