errors

var (
	ErrSetEmpty        = errors.New("dag: set is empty")
	ErrDagNotFound     = errors.New("dag: not found")
	ErrNotFound        = New(LDB_NOT_FOUND)
	ErrNumberNotFound  = New("dag: header's number not found")
	ErrUtxoNotFound    = New("utxo: not found")
	ErrMessageNotFound = errors.New("message: not found")
	ErrUnitExist       = New("unit: exist")
	ErrNullPoint       = New("null point")
	ErrUnknownAncestor = errors.New("unknown ancestor")
	ErrPrunedAncestor  = errors.New("pruned ancestor")
	ErrFutureBlock     = errors.New("block in the future")
	ErrInvalidNumber   = errors.New("invalid block number")
	ErrEOF             = errors.New("EOF")
)