What is the best way to import 3rd party libraries in webpack 4?

Question

webpack

I am writing an application with electron-webpack
And I need to use a third-party library lib.min.js The code is minified there. There is no npm command in the library.
What is the best way to import it into the project. You can create your own npm package to use npm install, just don't publish the package. Or are there better options?