Hi, the package node-yarnpkg is ready since a couple of weeks: https://alioth-lists.debian.net/pipermail/pkg-javascript-devel/2019-January/030472.html I haven't received any feedback, but from my testing it seems to work in sid and buster.
Please someone sponsor the upload to unstable: https://salsa.debian.org/js-team/node-yarnpkg Paolo
