🔧 From JavaScript to Node.js: Understanding What Really Happens Behind the Scenes (Part 4.1)

Node.js Modules Explained from Scratch — Why Do Modules Even Exist?

If you've been writing Node.js for even a few days, you've probably seen code like this:

const fs = require("fs");
const express = require("express");
const path = require("path");

Or maybe you've written your own module:

const math = require("./math");

Most tutorials stop...