terser fix for storybook

storybook-config.patch

diff --git a/app/ui-react/packages/.storybook/webpack.config.js b/app/ui-react/packages/.storybook/webpack.config.js
index 17fd6d6c82..e687c11b77 100644
--- a/app/ui-react/packages/.storybook/webpack.config.js
+++ b/app/ui-react/packages/.storybook/webpack.config.js
@@ -1,5 +1,7 @@
 const path = require('path');
 const TsconfigPathsPlugin = require('tsconfig-paths-webpack-plugin');
+const TerserPlugin = require('terser-webpack-plugin');
+
 module.exports = ({ config, mode }) => {
   config.module.rules.push({
     test: /\.tsx?$/,
@@ -26,5 +28,8 @@ module.exports = ({ config, mode }) => {
     fs: 'empty',
     net: 'mock',
   };
+  config.optimization.minimizer = [ new TerserPlugin({
+    parallel: 1
+  })];
   return config;
 };