norway-postal-codes

Let's get some types up in here :) This PR adds a simple file which declares the type of the postal code object to be I considered setting up a literal type for the entire postal code object, so that you have an object that is indexed by a set of literals, not just , but I'm not sure how much value it really adds. Some devs may prefer not having to work with literals here, since in order to get a string out of the object you have to assert your string keys as index literals before indexing the postal code object: On the other hand, such a type would certainly be preferable to if your postal code is actually typed as a literal, not simply a string, for example if you have set up some kind of validation/sanitation pipeline. I think making such a type would work if we add this to : What are your thoughts on typing this module?