[node/no-unpublished-require] .npmignore issue with * and !

[karolis-sh]

Hi, I have a common pattern of ignoring everything and unignoring only the files I want to be published in .npmignore:

*
!/lib/**/*

This pattern fails to include lib folder. It seems that * has issues.

Tested a few more cases, and this works:

/lib
!/lib

and this doesn't

/lib
!/lib/**/*

For now I'm using "files": ["lib"], in package.json