No yarn version information about docs HOT 1 CLOSED

Hi! Yarn's own page recommends updating from their Classic version. We are not ultimately responsible for maintaining instructions for older versions of other services. It's likely that if you're intentionally on Yarn 1.x and not upgrading despite their own recommendation to do so when possible, then you are aware that you are running an older version, and will need to find/use older commands.

So, this isn't something we're interested in adding/maintaining in our documentation.

from docs.