production webpack file

webpack.prod.js

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+const { merge } = require('webpack-merge');
+const common = require('./webpack.common.js');
+const path = require('path');
+const ZipPlugin = require('zip-webpack-plugin');
+const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
+const MiniCssExtractPlugin = require('mini-css-extract-plugin');
+
+const version = require('./src/manifest.json').version;
+const name = require('./src/manifest.json').name;
+
+module.exports = merge(common, {
+  mode: 'production',
+  optimization: {
+    minimize: true,
+    minimizer: [
+      new CssMinimizerPlugin({
+        minify: CssMinimizerPlugin.cleanCssMinify
+      })
+    ]
+  },
+  module: {
+    rules: [{
+      test: /\.css$/i,
+      use: [MiniCssExtractPlugin.loader, 'css-loader'],
+    }],
+  },
+  plugins: [
+    new MiniCssExtractPlugin(),
+    new ZipPlugin({
+      path: path.resolve(__dirname, 'dist/extension'),
+      filename: name + '_' + version + '.zip'
+    })
+  ]
+});