webpack.config.js

const webpack = require("webpack");
const path = require("path");

const config = {
  entry: {
    index: ["./src/lib.js"],
  },
  devtool: "eval-source-map",
  mode: "production", // or --mode=development
  output: {
    path: path.resolve(__dirname, "dist"),
    filename: "[name].js",
    libraryTarget: "umd",
    library: "ReactMSAViewer",
  },
  externals: {
    react: {
      root: "React",
      commonjs2: "react",
      commonjs: "react",
      amd: "react",
    },
    "react-dom": {
      root: "ReactDom",
      commonjs2: "react-dom",
      commonjs: "react-dom",
      amd: "react-dom",
    },
    "prop-types": {
      root: "PropTypes",
      commonjs: "prop-types",
      commonjs2: "prop-types",
      amd: "prop-types",
    },
  },
  module: {
    rules: [
      {
        test: /\.worker\.js$/,
        use: { loader: "worker-loader" },
      },
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: "babel-loader",
      },
    ],
  },
  optimization: {
    minimize: true,
  },
  plugins: [
    new webpack.DefinePlugin({
      "process.env": {
        NODE_ENV: JSON.stringify("production"),
      },
    }),
  ],
};

module.exports = config;