Only use this package if you want to check against a specific Node.js version.
If you just want to check if a module is a core module in the current Node.js version, you can use module.builtinModules:
import { builtinModules } from "node:module";
console.log(builtinModules.includes("fs"));
//=> true
console.log(builtinModules.includes("express"));
//=> false