diff --git a/common/json/badjson/json.go b/common/json/badjson/json.go
index 04dba1eb..9a7799ac 100644
--- a/common/json/badjson/json.go
+++ b/common/json/badjson/json.go
@@ -12,6 +12,14 @@ func Decode(content []byte) (any, error) {
 	return decodeJSON(decoder)
 }
 
+func Omitempty(content []byte) ([]byte, error) {
+	decoded, err := Decode(content)
+	if err != nil {
+		return nil, err
+	}
+	return json.Marshal(decoded)
+}
+
 func decodeJSON(decoder *json.Decoder) (any, error) {
 	rawToken, err := decoder.Token()
 	if err != nil {
@@ -47,7 +55,7 @@ func decodeJSON(decoder *json.Decoder) (any, error) {
 			}
 			return array, nil
 		default:
-			return nil, E.New("excepted object or array end: ", token)
+			return nil, E.New("excepted object or array start, but got ", token)
 		}
 	}
 	return rawToken, nil