fix: fix some issues

webpack.config.cjs

@@ -1,14 +1,32 @@
 const path = require('path');
 
 module.exports = {
-  entry: './src/index.js',
   mode: 'production',
+  entry: './src/index.js',
+  devtool: 'eval-cheap-module-source-map',
+  devServer: {
+    static: [
+      {
+        directory: path.join(__dirname, 'data'),
+        publicPath: '/data',
+      },
+      {
+        directory: path.join(__dirname, 'public'),
+        publicPath: '/public',
+      },
+      {
+        directory: path.join(__dirname, 'view'),
+        publicPath: '/view',
+      },
+    ],
+  },
   output: {
     path: path.resolve(__dirname, 'public'),
     filename: 'bundle.js',
+    clean: true,
   },
   // resolve: {
-  //   extensions: [".js"],
+  //   extensions: ['.js'],
   // },
   module: {
     rules: [{