Yarn is a package manager for your code. It allows you to use and share code with other developers from around the world. Yarn does this quickly, securely, and reliably so you don’t have to worry about your code being up to date or interacting with other developers’ code. In the world of software, Yarn is like a fast and efficient postal service that not only delivers packages but ensures they are the correct, most up-to-date versions and tracks them every step of the way.
