module;

#include <asio.hpp>

#include <concepts>

export module ttwhy.routers:concepts;

namespace ttwhy
{

  export template<typename Candidate, typename Event>
  concept router = requires(Candidate candidate, Event event) {
    { candidate.process(event) } -> std::same_as<asio::awaitable<void>>;
  };

}  // namespace ttwhy