[Ezku]

Thanks for the reply. So, careful application of mapped types and removing the ability to type a property as `foo: bar | undefined`. I understand this is desirable a lot of times especially if you can’t affect the format of what’s being parsed, but I’m not sure this is unambiguously better.

FWIW it’s made my life easier to say the keys will always be there, but the values are possibly undefined. Less room for ambiguous interpretation.