Cannot reject and discard messages that cause type errors

[renewooller]

I'm getting errors such as:

[Error: Unknown field value type 115]

and

[TypeError: First argument needs to be a number, array or string.]

The default behaviour is to requeue the message. eg basic.reject(true)

However, this causes to queue to backlog.

It would be great to be able to specify the behaviour of basic.reject(false) where the message is not requeued, but dead-lettered instead.