Yarn – A new package manager for JavaScript
Yarn shouldn't be installed from the package repository.The inconsistency between the version of nodejs which yarn is running on and the version of nodejs which npm is running on brings significant effects.
<a href="https://github.com/yarnpkg/rfcs/issues/9" rel="nofollow">https://github.com/yarnpkg/rfcs/issues/9</a>
Any idea how to reach out to one of the authors?