diff --git a/dataeq/dataeq.go b/dataeq/dataeq.go
index e3deff1..e350cd9 100644
--- a/dataeq/dataeq.go
+++ b/dataeq/dataeq.go
@@ -8,54 +8,48 @@ type (
 	Marshal   func(interface{}) ([]byte, error)
 	Unmarshal func([]byte, interface{}) error
 
-	DataFormat interface {
-		ConvertByte([]byte) (interface{}, error)
-		Convert(interface{}) (interface{}, error)
-		Equal(x, y interface{}) (bool, error)
-	}
-
-	converter struct {
+	DataFormat struct {
 		marshal   func(interface{}) ([]byte, error)
 		unmarshal func([]byte, interface{}) error
 	}
 )
 
 func New(marshal Marshal, unmarshal Unmarshal) DataFormat {
-	return &converter{
+	return DataFormat{
 		marshal:   marshal,
 		unmarshal: unmarshal,
 	}
 }
 
-func (c *converter) ConvertByte(b []byte) (interface{}, error) {
+func (df DataFormat) ConvertByte(b []byte) (interface{}, error) {
 	var d interface{}
-	err := c.unmarshal(b, &d)
+	err := df.unmarshal(b, &d)
 	if err == nil {
 		return d, nil
 	}
 	return nil, err
 }
 
-func (c *converter) Convert(x interface{}) (interface{}, error) {
+func (df DataFormat) Convert(x interface{}) (interface{}, error) {
 	if a, ok := x.([]byte); ok {
-		return c.ConvertByte(a)
+		return df.ConvertByte(a)
 	}
-	b, err := c.marshal(x)
+	b, err := df.marshal(x)
 	if err != nil {
 		return nil, err
 	}
-	return c.ConvertByte(b)
+	return df.ConvertByte(b)
 }
 
-func (c *converter) Equal(x, y interface{}) (bool, error) {
+func (df DataFormat) Equal(x, y interface{}) (bool, error) {
 	if reflect.DeepEqual(x, y) {
 		return true, nil
 	}
-	a, err := c.Convert(x)
+	a, err := df.Convert(x)
 	if err != nil {
 		return false, err
 	}
-	b, err := c.Convert(y)
+	b, err := df.Convert(y)
 	if err != nil {
 		return false, err
 	}
diff --git a/go.sum b/go.sum
index 0d803dc..56d62e7 100644
--- a/go.sum
+++ b/go.sum
@@ -1,11 +1,10 @@
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
-github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
-github.com/stretchr/testify v1.6.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=