Fun fact: using a subst-based approach has the same effect:

Suppose you've got a dev tree that's hitting the Windows long filename issues in some spots (yeah, some git (GUI) tools still fail on the classic 260 limit 😢 ) and you 'fix' that by doing this in your root project/git repo path:

SUBST Z: .

and then switch to your regular bash+git+whatnot environment, addressing everything as a /z/bla/bla/blub/... (bash) or Z:/bla/bla/blub/... (CMD / PS) path.

The result: nyc is dead in the water at 0 results a la your istanbuljs/nyc#1381.

Happens for any project here where your path are based off a SUBST drive root.

^^^^^ Just in case someone gets the wrong idea here: let me emphasize:

Everything is under that new '/z/' root! That's the git repo itself, all the projects and related files. All the npm-install tools too! So this is emphatically NOT about jumping roots or symlinks half-way up the ladder anywhere. That Z:\... example is like having a network drive mapping where all your shit is at.

Why'ld I do something 'crazy' like that? Simple. There's plenty on the dev box that's not considering code. Photoshop work, Book work, CAD work, etc. All sitting on a big fat honkin' SSD, vying for my attention. The software 'department' has its own place this way, with me saving some (path) typing and nice dedicated spot in the brain: coding is at Z:. Just nyc not wanting to play along, for quite some time already. My go-around there is watching it at the CI instead when I feel the need. A bit sad, though.