Chapter 9: Node.js Asynchronous
Asynchronous Programming in Node.js — written as if I’m sitting next to you, explaining it step by step with analogies, real code examples, common mistakes, and the mental models most people need to really...
Category: Node.js
Chapter 10: Node.js Promises
Promises in Node.js — written as if I’m sitting next to you, explaining everything step by step with real examples, analogies, common mistakes, and the mental models that actually help people understand and use...
Chapter 11: Node.js Async/Await
1. The most important sentence first async / await is syntactic sugar that makes working with Promises look almost like synchronous code — but it still runs asynchronously. It doesn’t change how the event...
Chapter 12: Node.js Error Handling
Error Handling in Node.js — written as if I’m sitting next to you, showing code on the screen, explaining decisions, common traps, production patterns, and real-world trade-offs. Let’s go step by step — from...
Chapter 13: Module Basics
1. What is a “module” in Node.js? A module is just a file that contains some code that you want to reuse in other files. The most common things you put in modules: Utility...
Chapter 14: Node Modules
What is a Module in Node.js? A module is simply a file (or sometimes a folder) that contains JavaScript code you want to reuse in other parts of your application. Most common things we...
Chapter 15: Node ES Modules
What are ES Modules (ESM) and why they matter in Node.js ES Modules (also called ECMAScript Modules) are the official, modern way to write modular JavaScript — the same syntax that browsers have used...
Chapter 16: Node NPM
1. What is npm really? (The honest explanation) npm = Node Package Manager It is two things at the same time: A huge online registry → the biggest collection of open-source JavaScript packages in...
Chapter 17: Node package.json
1. What is package.json really? package.json is the identity card and configuration file of every Node.js project. It tells: Who the project is (name, version, description) How to run it (scripts) What it needs...
Chapter 18: Node NPM Scripts
1. What are npm scripts really? npm scripts are custom commands you define inside the package.json file under the key “scripts”. Instead of typing long commands every day, you give them short, memorable names...
