Try to improve performance with thread-loader

package.json

@@ -31,6 +31,7 @@
     "mini-css-extract-plugin": "^2.2.0",
     "postcss": "^8.3.6",
     "prettier-standard": "^16.4.1",
+    "thread-loader": "^3.0.4",
     "uglifyjs-webpack-plugin": "^2.2.0",
     "webpack": "^5.50.0",
     "webpack-cli": "^4.8.0",

styles/system/game-icons.less

@@ -1,10 +1,6 @@
 @font-face {
   font-family: 'game-icons';
   src: url('./assets/fonts/game-icons.woff') format('woff');
-  // src: url('./assets/fonts/game-icons.eot?#iefix') format('eot'),
-  //   url('./assets/fonts/game-icons.woff') format('woff'),
-  //   url('./assets/fonts/game-icons.ttf') format('truetype'),
-  // url('../../assets/fonts/game-icons.svg#game-icons') format('svg');
 }
 .game-icon {
   &:before {

webpack.config.js

@@ -1,6 +1,7 @@
 import { dirname } from 'path'
 import { fileURLToPath } from 'url'
 import * as fs from 'fs'
+import * as os from 'os'
 import * as path from 'path'
 import * as process from 'process'
 import CopyWebpackPlugin from 'copy-webpack-plugin'
@@ -55,7 +56,7 @@ const bundleScript = {
   bail: buildMode === 'production',
   context: __dirname,
   entry: './module/coc7.js',
-  devtool: buildMode === 'development' ? undefined : 'inline-source-map',
+  devtool: buildMode === 'production' ? undefined : 'inline-source-map',
   mode: buildMode,
   module: {
     rules: [
@@ -73,12 +74,20 @@ const bundleScript = {
           {
             loader: 'less-loader',
             options: { sourceMap: true }
-          }
+          },
         ]
-      }
+      },
+      {
+        loader: "thread-loader",
+        options: {
+            workers: os.cpus().length + 1,
+            poolRespawn: false,
+            poolTimeout: buildMode === 'production' ? 500 : Infinity,
+        },
+      },
     ]
   },
-  optimization,
+  optimization: optimization,
   output: {
     clean: true,
     path: buildDestination(),