Before you start using Yarn, you'll first need to install it on your system. There are many different ways to install Yarn, but a single one is recommended and cross-platform:
Install via npm
It is recommended to install Yarn through the npm package manager, which comes bundled with Node.js when you install it on your system.
Once you have npm installed you can run the following both to install and upgrade Yarn:
npm install --global yarnCheck that Yarn is installed by running:
yarn -v