Module wire 

Enums

Bad

A sender that framed something this end cannot read is a protocol disagreement, not a task’s error, so it goes to whoever owns the link.

Functions

decode

Which must be the whole of bytes. Carried as RcVal so a back-reference rebuilds the sharing rather than a copy: a frame naming the same pair a thousand times decodes to one pair.

encode

None for anything that is not data, which is the same judgement send makes at the primitive - so a closure reaching here is a bug above.