Copy path to variable in array using Kint
It seemed there was no solution so I just copied the search_krumo module and changed it a bit so it works with Drupal 8 and kint and made search_kint.

I've only just done the first push so isn't showing as a download yet; and there is only a development snapshot release, at the moment, but it's something to get started with. 

So far, it has worked well with my testing.

EDIT: search_kint now has a full release.