Node.js provides a set of built-in variables that allow you to interact with the system without extra libraries.
1The process Object
From process.exit() to process.nextTick(), this object is the heart of your application's interaction with the host OS and the event loop.
2File System Context
Using __dirname with the path module is the gold standard for creating cross-platform file paths. It ensures your app works on Windows, Mac, and Linux.
3The Global Namespace
While you can attach things to global, it's generally discouraged. It can lead to hard-to-debug conflicts. Use the module system instead for sharing data.
