Remove go-json

option/dns.go

@@ -58,12 +58,10 @@ func (r *DNSRule) UnmarshalJSON(bytes []byte) error {
 	if err != nil {
 		return err
 	}
-	if r.Type == "" {
-		r.Type = C.RuleTypeDefault
-	}
 	var v any
 	switch r.Type {
-	case C.RuleTypeDefault:
+	case "", C.RuleTypeDefault:
+		r.Type = C.RuleTypeDefault
 		v = &r.DefaultOptions
 	case C.RuleTypeLogical:
 		v = &r.LogicalOptions

option/json.go

@@ -35,9 +35,7 @@ func MergeObjects(objects ...any) (*badjson.JSONObject, error) {
 }
 
 func MarshallObjects(objects ...any) ([]byte, error) {
-	objects = common.Filter(objects, func(v any) bool {
-		return v != nil
-	})
+	objects = common.FilterNotNil(objects)
 	if len(objects) == 1 {
 		return json.Marshal(objects[0])
 	}