Support Windows directory separator

[marktopper]

Thanks to @emptynick for reporting this issue.

[fletch3555]

A little late since this is already merged, but doesn't PHP have a constant that holds the current environment's directory separator? You could simplify it and use that

[marktopper]

Properly a good idea @fletch3555. 👍

[emptynick]

It does, but $path holds something like \hooks/test-hook/resources\assets\scripts\alert.js in my case.

[fletch3555]

Yeah, I had a feeling that might be the case. But $file->getRelativePath() shouldn't do that... I think it should always return a valid path using on your current file system separator. Might be worth digging into that and reporting it on the repo for whatever that's coming from (Flysystem?)