Mysterious version 17.x released on npmjs?

[ultrabear]

If you check on npmjs of this package (and indeed where this package backlinks to) you will find versions with a 17.x prefix

Is this package compromised? there are no 17.x versions listed on the releases page

[iSuslov]

Seems like releases go from this repo: https://github.com/streamich/json-joy/tree/master/packages/json-pack