build: add bundle analyzer

config/webpack.config.js

@@ -4,6 +4,7 @@ const fs = require("fs");
 const path = require("path");
 const webpack = require("webpack");
 const HtmlWebpackPlugin = require("html-webpack-plugin");
+const BundleAnalyzerPlugin = require("webpack-bundle-analyzer").BundleAnalyzerPlugin;
 const InlineChunkHtmlPlugin = require("react-dev-utils/InlineChunkHtmlPlugin");
 const TerserPlugin = require("terser-webpack-plugin");
 const MiniCssExtractPlugin = require("mini-css-extract-plugin");
@@ -401,6 +402,10 @@ module.exports = function (webpackEnv) {
       ].filter(Boolean)
     },
     plugins: [
+      isEnvProduction &&
+        new BundleAnalyzerPlugin({
+          openAnalyzer: false
+        }),
       // Generates an `index.html` file with the <script> injected.
       new HtmlWebpackPlugin(
         Object.assign(