Return results in a nested object

I am trying to loop through the req.body that has data and I am trying to return the bookStatus of all the books present inside the body. I am doing this:

let bod = req.body.books;
const filtered = bod.map(function (rep){
        console.log(rep);
        return rep.bookStatus;
    });

This returns the bookStatus of all the books, but it is just the value of the bookStatus key. I am trying to get the key as well, for it to look like {bookStatus:"value"}.

UPDATE: solution posted by @evolutionxbox works, except now I am trying to access only the ones that have the status published. I am doing this:

if(rep.bookStatus === 'published') {
 return ({ bookStatus: rep.bookStatus })
}

But this returns the results as following [ { bookStatus: 'published' }, { bookStatus: 'published' }, undefined ]. Here undefined is the unpublished one but I do not even want it to be there in first place

Answer

let bod = req.body.books;
const filtered = bod.map(function (rep){
        console.log(rep);
        return { bookStatus : rep.bookStatus };
    });