Current we use boolean values to determine whether os is one of Mac, Windows or Linux.
Should consider using an Enum.
This could result in a number of changes, however I believe it is worth, and needs to be done.
Using 3 booleans doesn't work well, when all of them are mutually exclusive.

Suggestion:

export enum OS {
	Linux = 'Linux',
	Mac = 'Mac',
	Windows = 'Windows'
}

@Microsoft/pvsc-team