Install Yarn 2
This lesson goes over how to install yarn 2 through npm.
To install yarn 2 globally, we use
npm install -g yarn@berry.
To install yarn 2 to a specific project, we use
yarn policies set-version berry. This creates a
.yarnrc file and a
.yarnrc that sets the path to our yarn instance in the created
.yarn/ directory that holds our new yarn version.