keepArray doesn't transform the elements of an Array

[marcog83]

Hi i'd like to transform the keys of each object contained in an array. I use keepArray, but the items are kept without transformation. You can find attached
Actual outcome

and the Expected

If i modify this line of code, doing a map over obj[key], I can get the expected result. Can it be a solution?

If yes, how long would it take to be released?
If not, do you have any suggestion?

I like your library, and our team are going to use it in a production project.
Thanks a lot for sharing it