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create-react-app bundle-analyzer
process.env.NODE_ENV = 'production';
const webpack = require('webpack');
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const webpackConfigProd = require('react-scripts/config/webpack.config')('production');
// this one is optional, just for better feedback on build
const chalk = require('chalk');
const ProgressBarPlugin = require('progress-bar-webpack-plugin');
const green = text => {
// pushing BundleAnalyzerPlugin to plugins array
webpackConfigProd.plugins.push(new BundleAnalyzerPlugin());
// optional - pushing progress-bar plugin for better feedback;
// it can and will work without progress-bar,
// but during build time you will not see any messages for 10-60 seconds (depends on the size of the project)
// and decide that compilation is kind of hang up on you; progress bar shows nice progression of webpack compilation
new ProgressBarPlugin({
format: `${green('analyzing...')} ${green('[:bar]')}${green('[:percent]')}${green('[:elapsed seconds]')} - :msg`,
// actually running compilation and waiting for plugin to start explorer
webpack(webpackConfigProd, (err, stats) => {
if (err || stats.hasErrors()) {
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