webpack how to exclude node_modules except a folder

Question

I'm using webpack 4 and I have installed a module with a lot of subfolders, the structure would be:

/node_modules/my_main_package/what_i_need_to_include

I need to exclude the whole node_modules except what_i_need_to_include. Here is what I tried in my webpack.base.babel so far:

The first approach:

module: {
    rules: [
      {
        test: /\.js$/, 
        exclude: '/node_modules/',
        include: '/node_modules/my_main_package/what_i_need_to_include',
use: {
          loader: 'babel-loader',
          options: options.babelQuery,
        },
      },
...

The second approach:

{
  test: /\.js$/, 
  exclude: '/node_modules\/(?!my_main_package/what_i_need_to_include).*/'
   ...
}

both times unsuccessfully.

How can I get this working? What am I doing wrong?

Answer 1

I have to thank Mr. The Bear, he gave me a link with a working solution, and I will answer my question myself for sharing a solution, since very few people read the comments and this may probably would be a question for others. here is the solution:

module: {
    rules: [
      {
        test: /\.js$/, 
        exclude: /node_modules\/(?!(my_main_package\/what_i_need_to_include)\/).*/,
use: {
          loader: 'babel-loader',
          options: options.babelQuery,
        },
      },
...
}

Hope it might be helpful.