updated to latest versions

webpack.prod.js

@@ -1,4 +1,4 @@
-const merge = require('webpack-merge');
+const { merge } = require('webpack-merge');
 const common = require('./webpack.common.js');
 const path = require('path');
 const ReplaceInFileWebpackPlugin = require('replace-in-file-webpack-plugin');
@@ -6,7 +6,7 @@ const CopyWebpackPlugin = require('copy-webpack-plugin');
 
 const prodFolderName = "prod-dist";
 
-const replaceVersionInHtmlOption =  {
+const replaceVersionInHtmlOption = {
     //set ?v= with new date in html files for production
     dir: path.join(__dirname, prodFolderName),
     test: /\.html$/,
@@ -29,12 +29,16 @@ module.exports = merge(common, {
         filename: 'main.js'
     },
     plugins: [
-        new CopyWebpackPlugin([
+        new CopyWebpackPlugin(
             {
-                from: path.resolve(__dirname, '*.html'),
-                to: path.resolve(__dirname, prodFolderName, '[name].[ext]')
+                patterns: [
+                    {
+                        from: path.resolve(__dirname, 'index.html'),
+                        to: path.resolve(__dirname, prodFolderName, '[name].[ext]')
+                    }
+                ]
             }
-        ]),
+        ),
         new ReplaceInFileWebpackPlugin(
             [
                 replaceVersionInHtmlOption