types: move versionStr to types_gojay.go and remove invalidID

Author: zchee

types.go

@@ -7,14 +7,11 @@ package jsonrpc2
 import (
 	"encoding/json"
 	"fmt"
-	"math"
 )
 
 // Version represents a JSON-RPC version.
 const Version = "2.0"
 
-var versionStr = string(Version)
-
 // version is a special 0 sized struct that encodes as the JSON-RPC version
 // tag.
 // It will fail during decode if it is not the correct version tag in the
@@ -90,8 +87,6 @@ func NewIntID(v int64) ID { return ID{number: v} }
 // NewStringID returns a new string request ID.
 func NewStringID(v string) ID { return ID{name: v} }
 
-const invalidID int64 = math.MaxInt64
-
 // WireRequest is sent to a server to represent a Call or Notify operaton.
 type WireRequest struct {
 	// JSONRPC is always encoded as the string "2.0"

types_gojay.go

@@ -59,6 +59,8 @@ func (m *RawMessage) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+var versionStr = string(Version)
+
 // MarshalJSONObject implements gojay.MarshalerJSONObject.
 func (r *version) MarshalJSONObject(enc *gojay.Encoder) {
 	enc.String(Version)