ReadonlyfileThe real path to read or write, with no link on it; for a path that does not exist yet, where it will be created.
ReadonlylinkThe path itself when it is a symbolic link or junction, which a local delete removes; otherwise undefined.
ReadonlyoutsideTrue when file is outside the real local root, which only follow allows.
Where a site path lives on this computer, as resolveLocalTarget finds it.