It is not a good practice to indicate a property type in it's name. If you want to specify it, JSDOC is much better place to do it.
I have been using stacktrace recently in conjunction with source-map from Mozilla and I had to remap stackframe objects to fit
because that is a kind of object that they expect. I think it would make sense to unify the naming conventions in Mozilla's favour. What do you think @oliversalzburg ?