Little refactoring

request.go

@@ -11,24 +11,31 @@ import (
 	encoder "github.com/vmihailenco/msgpack/v5"
 )
 
+type EmptyParams struct{}
+
+func NewEmptyParams() *EmptyParams {
+	return &EmptyParams{}
+}
+
 type Request struct {
 	Method string `json:"method"            msgpack:"method"`
 	Params any    `json:"params,omitempty"  msgpack:"params"`
 	Auth   *Auth  `json:"auth,omitempty"    msgpack:"auth"`
 }
 
-func NewRequest() *Request {
+func NewEmptyRequest() *Request {
 	req := &Request{}
 	req.Auth = &Auth{}
+	req.Params = NewEmptyParams()
 	return req
 }
 
 func (req *Request) Pack() ([]byte, error) {
 	rBytes, err := encoder.Marshal(req)
-	return rBytes, Err(err)
+	return rBytes, err
 }
 
-func (req *Request) JSON() []byte {
+func (req *Request) ToJson() []byte {
 	jBytes, _ := json.Marshal(req)
 	return jBytes
 }