This Rollup/Vite plugin automatically declares NodeJS built-in modules and npm dependencies as external, preventing them from being bundled into your code. It's designed for developers using Rollup or Vite who want to streamline their bundling process by ensuring Node.js modules like `path`, `fs`, and `os` remain external while handling dependencies from package.json files. The plugin is particularly useful in monorepo setups and eliminates the need to manually configure external modules.