cli flags passed to path

[YardenPorat]

to reproduce: use prepack

[AdamYahid]

The issue here is that when providing an unknown key to the CLI (which we allow) it is passed to commander as the path so in this case the base path is resolve(--sourceRoot) which obviously resolves into something problematic.

We need to figure out how to handle this, but I don't think it's a very important issue at the moment @RomanYarik @AviVahl @barak007