code optimization: removed en.json import as it is to heavy

build/webpack.config.prod.js

@@ -5,6 +5,7 @@ const { merge } = require('webpack-merge')
 const baseConfig = require('./webpack.config.base')
 const MiniCssExtractPlugin  = require('mini-css-extract-plugin')
 const TerserPlugin = require("terser-webpack-plugin");
+const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
 
 module.exports = merge(baseConfig, {
   mode: 'production',
@@ -70,6 +71,9 @@ module.exports = merge(baseConfig, {
   plugins: [
     new webpack.DefinePlugin({
       'process.env.NODE_ENV': JSON.stringify('production')
+    }),
+    new BundleAnalyzerPlugin({
+      'analyzerMode': 'static'
     })
   ]
 })