Issue when filtering?

[DiegoAndresCortes]

I'm having this issue on windows

TypeError [ERR_INVALID_ARG_TYPE]: The "from" argument must be of type string. Received undefined

If I remove this line, it works fine:

copy-and-watch/index.js

Line 37 in 1c1517a

.filter(p => from.indexOf(p) >= 0)

Any idea what could be causing the issue? It was working just fine.
This is the instruction I tested with: "fontawesome-css": "copy-and-watch node_modules/@fortawesome/fontawesome-free/css/all.min.css css/custom",

I also tried adding a slash at the end: "fontawesome-css": "copy-and-watch node_modules/@fortawesome/fontawesome-free/css/all.min.css css/custom/",

[DiegoAndresCortes]

@zont can you test, or have any thoughts on this issue?