errors

var (
	ErrFileNotExists = os.ErrNotExist
	ErrBadRequest    = errors.New("bad request")
	ErrNotFound      = errors.New("not found")
	ErrGone          = errors.New("gone")
	ErrRetry         = errors.New("retry")

	As        = errors.As
	Errorf    = errors.Errorf
	Is        = errors.Is
	New       = errors.New
	WithStack = errors.WithStack
	Wrap      = errors.Wrap
	Wrapf     = errors.Wrapf
)