if constexpr()

in include/unifex/await_transform.hpp [203:217]

• 15 lines of code
• 8 McCabe index (conditional complexity)

    if constexpr (detail::_awaitable<Value>) {
      return (Value&&) value;
    } else if constexpr (unifex::sender<Value>) {
      if constexpr (unifex::sender_to<Value, _receiver_t<Promise, Value>>) {
        auto h = coro::coroutine_handle<Promise>::from_promise(promise);
        return _as_awaitable<Promise, Value>{(Value&&) value, h};
      } else {
        static_assert(
          unifex::sender_to<Value, _receiver_t<Promise, Value>>,
          "This sender is not awaitable in this coroutine type.");
        return (Value&&) value;
      }
    } else {
      return (Value&&) value;
    }