generate manifest and compress images

package.json

@@ -1,14 +1,16 @@
 {
   "dependencies": {
-    "copy-webpack-plugin": "^5.1.0",
+    "copy-webpack-plugin": "^5.1.1",
     "elm-webpack-loader": "^6.0.1",
     "html-webpack-plugin": "^3.2.0",
+    "imagemin-webpack-plugin": "^2.4.2",
     "jsdom": "^15.2.1",
     "prerender-spa-plugin": "^3.4.0",
     "tempy": "^0.3.0",
-    "terser-webpack-plugin": "^2.3.0",
-    "webpack": "^4.41.2",
+    "terser-webpack-plugin": "^2.3.1",
+    "webpack": "^4.41.4",
     "webpack-cli": "^3.3.10",
+    "webpack-manifest-plugin": "^2.2.0",
     "workbox-webpack-plugin": "^4.3.1"
   },
   "name": "wand-front-utils",

webpack.config.js

@@ -5,6 +5,8 @@ const PrerenderSPAPlugin = require('prerender-spa-plugin')
 const Renderer = PrerenderSPAPlugin.PuppeteerRenderer
 const CopyPlugin = require('copy-webpack-plugin')
 const { InjectManifest } = require('workbox-webpack-plugin')
+const ManifestPlugin = require('webpack-manifest-plugin')
+const ImageminPlugin = require('imagemin-webpack-plugin').default
 const { JSDOM } = require('jsdom')
 const tempy = require('tempy')
 const fs = require('fs')
@@ -27,8 +29,7 @@ const jsMin = {
   mangle: true,
 }
 
-module.exports =
-  {
+module.exports = {
   output: {
     filename: "main.js",
     path: path.join(__dirname, "dist"),
@@ -45,6 +46,13 @@ module.exports =
     }],
   },
   plugins: [
+    new ManifestPlugin(),
+    new ImageminPlugin({
+      disable: false,
+      pngquant: {
+        quality: '95-100'
+      }
+    }),
     new TerserPlugin({
       terserOptions: jsMin,
     }),