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CommonJS

CommonJS Modules․ require and module.exports

What is a module in JavaScript and why is it important?

IIFE (Immediately Invoked Function Expressions) – Why was this needed and why we hardly use it now

Spread vs Rest operators – how and when to use them

Object Destructuring – how to simplify code

How Promises work, why async/await is more readable

Scope, Closure and Lexical Environment

How the JavaScript Event Loop Works

In this article, we will explore how closures work in async code.