Add and enable Terser minification

webpack/package.json

@@ -28,6 +28,7 @@
  "sass-loader": "^6.0.7",
  "snapsvg": "^0.5.1",
  "style-loader": "^0.20.3",
+ "terser-webpack-plugin": "^1.2.1",
  "typeface-ubuntu": "^0.0.65",
  "url-loader": "^0.6.2",
  "webpack": "^4.29.0",

webpack/webpack.config.js

@@ -2,6 +2,7 @@ const path = require('path');
 const MiniCssExtractPlugin = require('mini-css-extract-plugin');
 const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
 const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");
+const TerserPlugin = require("terser-webpack-plugin");
 
 module.exports = {
  entry: {
@@ -69,7 +70,12 @@ module.exports = {
  ],
  optimization: {
  minimizer: [
- new OptimizeCSSAssetsPlugin({})
+ new OptimizeCSSAssetsPlugin(),
+ new TerserPlugin({
+ cache: true,
+ parallel: true,
+ sourceMap: true
+ })
  ],
  splitChunks: {
  chunks: 'all'