@type result() ::
  {:events, [Vibe.Event.t()]}
  | {:command, atom() | {atom(), map()}}
  | :compact
  | :ignore

@type spec() ::
  Vibe.Session.Command.Spec.t()
  | %{
      :name => String.t(),
      optional(:aliases) => [String.t()],
      optional(:description) => String.t(),
      optional(:selectors) => [atom()]
    }