I recently started learning Node.js, and one of the first concepts I came across was modules. I've been a Front-End Developer for a few years now, and while I already knew what modules were on the surface, I never actually went deep into understanding them. Until now.
Modules are essentially just files of code. That's the simplest way to put it. But if we want to go deeper into what modules really are, why they exist, and how to use them, there's a lot more to unpack.
Modules in Node.js are the building blocks of any application. Why? Because they:
Organize code into manageable files
Provide encapsulation






