Code style for long typespecs

Question

Which is the code style for a long typespec which exceed 80 characters length?

@spec function(list() | map(), list() | map(), list() | map(), list() | nil) :: map()

Answer 1

Here's the example from Enum module. You might want to do something similar to this

@spec chunk_while(
          t,
          acc,
          (element, acc -> {:cont, chunk, acc} | {:cont, acc} | {:halt, acc}),
          (acc -> {:cont, chunk, acc} | {:cont, acc})
        ) :: Enumerable.t()
        when chunk: any