webpack.prod.js

const path = require("path");
const webpack = require("webpack");
const CompressionPlugin = require("compression-webpack-plugin");
// const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin

module.exports = {
  entry: "./src/avatar.jsx",
  mode: "production",
  output: {
    path: path.resolve("lib"),
    filename: "react-avatar.js",
    library: "reactAvatar",
    libraryTarget: "umd",
  },
  module: {
    rules: [
      {
        loader: "babel-loader",
        test: /\.js$/,
        exclude: /node_modules/,
      },
      {
        loader: "babel-loader",
        test: /\.jsx$/,
        exclude: /node_modules/,
      },
    ],
  },
  externals: {
    react: "react",
  },
  plugins: [
    // new BundleAnalyzerPlugin(),
    new CompressionPlugin({
      test: /\.js/,
    }),
  ],
};