npm install fails: invalid dependency package "bluelovers/string-width"

[Hati-]

$ npm install --save ck2
npm ERR! code EINVALIDPACKAGENAME
npm ERR! Invalid package name "bluelovers/string-width": name can only contain URL-friendly characters

I can't seem to find the package anywhere either, so I have no idea what it does. Perhaps https://www.npmjs.com/package/string-width does the same and can replace it?

I also noticed that every dependencies is set to use any version ("fast-csv": "*"), which would break this package if any dependency have breaking changes. This should be fixed too.