Yarn

Yarn is a package manager for NodeJS. It is API and feature compatible with NPM and provides better performance and a flat package tree.

JHipster, by default, uses Yarn instead of NPM as Yarn is much faster at the time of writing. If you prefer to use NPM, then you can skip this step:

1. You can visit the Yarn website (https://yarnpkg.com/en/docs/install) and follow the instructions to install Yarn.
2. Once installed, check by running yarn --version to make sure.