webpack.config.js

const path = require("path");

module.exports = {
  // Entry point
  entry: "./src/index.js",

  // Output configuration
  output: {
    path: path.resolve(__dirname, "dist"),
    filename: "bundle.js",
    library: {
      name: "devtools",
      type: "umd",
    },
  },
  stats: {
    modulesSort: "size",
  },


  // Externals to avoid bundling react and react-dom with your bundle
  externals: {
    react: {
      commonjs: "react",
      commonjs2: "react",
      amd: "react",
      root: "React",
    },
    "react-dom": {
      commonjs: "react-dom",
      commonjs2: "react-dom",
      amd: "react-dom",
      root: "ReactDOM",
    },
  },

  // Loaders and rules
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["@babel/preset-react"],
          },
        },
      },
    ],
  },

  // Optimization, performance and other settings can be added if needed
};