What is YARN?
YARN, or yarn package manager, is a tool that helps developers manage dependencies (packages and libraries) in JavaScript projects. It automates the process of installing, updating, and managing dependencies, making it easier for developers to focus on writing code.
YARN works with package.json files, which serve as a central configuration file for Node.js projects. The package manager creates yarn.lock files that capture the exact version of all packages and their dependencies, ensuring consistent dependencies across different environments.
To use YARN, developers can install it globally using npm and verify its installation by running yarn --version. They can then add new packages to their project using yarn add, which fetches the package from the registry and installs it locally in the node_modules folder.