How do I parse a string to number while destructuring?

Question

I am trying to experiment around destructuring assignment. Now I have a case which I trying to cop up with destructuring itself.

For example, I have an input like th

Answer 1

It's not possible - no operations can be performed on a property during destructuring. If you use destructuring to extract a property into a variable, that variable will be === to the original property value.

(of course, you could transform the original object's values to Number prior to destructuring, but that's not the same thing)