JavaScript is the most in-demand programming language right now, and it enables developers to create beautiful and functional cross-platform apps when used alongside Node.js — a JavaSript runtime environment. To get started with JavaScript, you can use ChatGPT to help you start coding, but you’ll still need a package manager like Yarn or Node Package Manager (NPM) to develop and share code. While NPM was the default package manager for Node.js for a long time, Meta developed Yarn as a more efficient and stable alternative.