Custom type helper for Erlang/Elixir.

thing.erl

-module(thing).

-export([makePerson/1]).

makePerson(#{name => Name, gender => Gender, age = Age}) ->
  {person, Name, Gender, Age}.

personToMap({person, Name, Gender, Age}) ->
  #{name => Name, gender => Gender, age => Age}.

thing.gleam

pub type Person {
  Person(name: String, gender: Option(String), age: Int)
}