How to onfuscate only my own code using webpack-obfuscator?

[RareScrap]

I'm building an electron application using TypeScript and WebPack. I want to process my own code without touching any 3rd party dependencies in order to rename only my own classes property names.

I've tried to use two approaches but with no success:

1. Using plugin

   import path from 'node:path';
   import type { Configuration } from 'webpack';
   
   import { rules } from './webpack.rules';
   import WebpackObfuscator from 'webpack-obfuscator';
   
   export const mainConfig: Configuration = {
     /**
      * This is the main entry point for your application, it's the first file
      * that runs in the main process.
      */
     entry: "./src/index.ts",
     // Put your normal webpack config below here
     module: {
       rules
     },
     plugins: [
       new WebpackObfuscator({
         sourceMap: true,
         renameProperties: true,
         rotateStringArray: true
       }, "node_modules/")
     ],
     resolve: {
       extensions: [".js", ".ts", ".jsx", ".tsx", ".css", ".json"],
       // Workaround to make import aliases ("paths" from tscondig.json) work
       // https://stackoverflow.com/a/75373097/6698055
       alias: {
         "@domain": path.resolve(__dirname, "src/domain"),
         "@platform": path.resolve(__dirname, "src/platform"),
         "@build_src": path.resolve(__dirname, "build_src")
       }
     }
   };

2. Using loader

   import type { ModuleOptions } from 'webpack';
   import WebpackObfuscator from 'webpack-obfuscator';
   import path from 'node:path'
   
   export const rules: Required<ModuleOptions>["rules"] = [
     // Add support for native node modules
     {
       // We're specifying native_modules in the test because the asset relocator loader generates a
       // "fake" .node file which is really a cjs file.
       test: /native_modules[/\\].+\.node$/,
       use: "node-loader"
     },
     {
       test: /[/\\]node_modules[/\\].+\.(m?js|node)$/,
       parser: { amd: false },
       use: {
         loader: "@vercel/webpack-asset-relocator-loader",
         options: {
           outputAssetBase: "native_modules"
         }
       }
     },
     {
       test: /\.js$/,
       enforce: 'post', // Ensure this loader will be called after normal loaders
       use: {
         loader: WebpackObfuscator.loader,
         options: {
           rotateStringArray: true,
           renameProperties: true
         }
       }
     }
   ];

How can I force WebPack to process only my own code without touching any dependencies?