Feature description

It would be nice if this awesome looking logger would also be available for TypeScript usage.
This would require some typings. Also you are getting an error like this when trying to use it
with TypeScript:

Cannot invoke an object which is possibly 'undefined'.

I am always using strict mode for my TS projects to avoid issues.

Feature motivation

Well TypeScript gets more and more popular and is a lot better than JavaScript in a ton of aspects.
Especially console applications which could use this awesome logger are often written in TS which
would make this a perfect package for it.