instalacja
# curl -sL https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - # echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list # apt-get update && apt-get install yarn
# yarn yarn install v1.19.1 info No lockfile found. [1/4] Resolving packages... [2/4] Fetching packages... [3/4] Linking dependencies... [4/4] Building fresh packages... success Saved lockfile. Done in 0.10s.