task

type Formatter interface {
	ClearedCompleted(count int) ([]byte, error)
	TaskID(id usecase.TaskID) ([]byte, error)
	Task(td *usecase.TaskData) ([]byte, error)
	TaskMap(ts map[usecase.TaskID]*task.Task) ([]byte, error)
	responseMapper.ResponseFormatter
}

type Logger interface {
	Printf(format string, v ...interface{})
}

type Parser interface {
	AddTask(b io.Reader, uid user.ID) (*task.Task, error)
}