Better Typescript support

[rogueturnip]

Hi! Your project is really great. It works really well for what I need but I did find some issues when trying to properly type my handler.

Basically what I want to is be able to pull out just the values from the saved array so that I can send that to the database for storage. I don't need to carry the label or disabled keys values.

When to do "map" on the data stored it kept telling me that map is to valid on Options. If I set the typing to "any" it works just fine.

This isn't stopping me from getting things working functionally but it just impacts having nicely typed code.