build: optimise production builds, automate creating zip files

.gitignore

@@ -2,6 +2,7 @@
 node_modules/
 .vscode/
 build/
+dist/
 
 # Files
 package-lock.json

package.json

@@ -48,13 +48,15 @@
     "webpack": "^5.39.1",
     "webpack-cli": "^4.7.2",
     "webpack-dev-server": "^3.11.2",
-    "webpack-merge": "^5.8.0"
+    "webpack-merge": "^5.8.0",
+    "zip-file-webpack-plugin": "^1.2.0"
   },
   "scripts": {
     "start": "webpack serve --config webpack.dev.js",
     "build": "webpack --config webpack.prod.js",
-    "chrome": "cp manifest/chrome.json build/manifest.json",
-    "firefox": "cp manifest/firefox.json build/manifest.json"
+    "build:chrome": "webpack --config webpack.prod.js --env=type=chrome",
+    "build:firefox": "webpack --config webpack.prod.js --env=type=firefox",
+    "postinstall": "node -e \"if (require('fs').existsSync('node_modules/.cache/webpack')) require('fs').rmSync('node_modules/.cache/webpack', { recursive: true })\""
   },
   "browserslist": {
     "production": [

webpack.prod.js

@@ -3,8 +3,12 @@ const common = require('./webpack.common.js');
 const path = require('path');
 const HtmlWebpackPlugin = require('html-webpack-plugin');
 const CopyPlugin = require('copy-webpack-plugin');
+const ZipFilePlugin = require('zip-file-webpack-plugin');
 
-module.exports = merge(common, {
+module.exports = (env) => {
+  const type = env.type || 'web';
+
+  return merge(common, {
     mode: 'production',
     output: {
       path: path.resolve(__dirname, './build'),
@@ -12,6 +16,9 @@ module.exports = merge(common, {
       chunkFilename: '[id].[chunkhash].chunk.js',
       clean: true
     },
+    cache: {
+      type: 'filesystem'
+    },
     plugins: [
       new HtmlWebpackPlugin({
         template: path.resolve(__dirname, './public/index.html')
@@ -24,8 +31,17 @@ module.exports = merge(common, {
           {
             from: 'public/offline-images',
             to: 'offline-images'
+          },
+          {
+            from: `manifest/${type}.json`,
+            to: 'manifest.json'
           }
         ]
+      }),
+      new ZipFilePlugin({
+        path: '../dist/',
+        filename: `${type}.zip`
       })
     ]
   });
+}