Added analyze script to run bundle analyzer

Author: pascalgagneur

package.json

@@ -13,7 +13,8 @@
     "test": "./node_modules/.bin/mocha tests/helpers/setup.js tests/**/*.spec.js --require @babel/register",
     "test:watch": "npm test -- --watch",
     "test:coverage": "nyc npm test",
-    "build": "./node_modules/.bin/webpack --config webpack.config.prod.js -p"
+    "build": "./node_modules/.bin/webpack --config webpack.config.prod.js -p",
+    "analyze": "BUNDLE_ANALYZE=true ./node_modules/.bin/webpack --config webpack.config.prod.js -p"
   },
   "files": [
     "dist"
@@ -98,4 +99,4 @@
     "react": "^16.3.0",
     "react-dom": "^16.3.0"
   }
-}
+}

webpack.config.prod.js

@@ -1,7 +1,10 @@
 const path = require('path');
 const CleanWebpackPlugin = require('clean-webpack-plugin');
 const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
-// const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
+const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
+
+//const analyze = process.env.BUNDLE_ANALYZE === 'true' ? new BundleAnalyzerPlugin() : {};
+
 
 module.exports = {
   mode: 'production',
@@ -26,7 +29,7 @@ module.exports = {
     new UglifyJsPlugin({
       comments: false,
     }),
-    // new BundleAnalyzerPlugin(),
+    process.env.BUNDLE_ANALYZE === 'true' ? new BundleAnalyzerPlugin() : () => { }
   ],
   module: {
     rules: [