diff --git a/cpp/utils.cpp b/cpp/utils.cpp
index 303ba99..0fa9d6b 100644
--- a/cpp/utils.cpp
+++ b/cpp/utils.cpp
@@ -155,7 +155,7 @@ jsi::Value create_js_rows(jsi::Runtime &rt, const BridgeResult &status) {
 }
 
 jsi::Value
-create_result(jsi::Runtime &rt, BridgeResult status,
+create_result(jsi::Runtime &rt, const BridgeResult &status,
               std::vector<DumbHostObject> *results,
               std::shared_ptr<std::vector<SmartHostObject>> metadata) {
   jsi::Object res = jsi::Object(rt);
@@ -191,7 +191,7 @@ create_result(jsi::Runtime &rt, BridgeResult status,
 }
 
 jsi::Value
-create_raw_result(jsi::Runtime &rt, BridgeResult status,
+create_raw_result(jsi::Runtime &rt, const BridgeResult &status,
                   const std::vector<std::vector<JSVariant>> *results) {
   size_t row_count = results->size();
   jsi::Array res = jsi::Array(rt, row_count);
@@ -296,14 +296,4 @@ int mkdir(std::string const &path) {
   return 0;
 }
 
-std::vector<std::string> parse_string_list(const std::string &str) {
-  std::vector<std::string> result;
-  std::istringstream stream(str);
-  std::string token;
-  while (std::getline(stream, token, ',')) {
-    result.emplace_back(token);
-  }
-  return result;
-}
-
 } // namespace opsqlite
diff --git a/cpp/utils.h b/cpp/utils.h
index 951266b..adb4c64 100644
--- a/cpp/utils.h
+++ b/cpp/utils.h
@@ -26,14 +26,14 @@ std::vector<JSVariant> to_variant_vec(jsi::Runtime &rt, jsi::Value const &xs);
 std::vector<int> to_int_vec(jsi::Runtime &rt, jsi::Value const &xs);
 
 jsi::Value
-create_result(jsi::Runtime &rt, BridgeResult status,
+create_result(jsi::Runtime &rt, const BridgeResult &status,
               std::vector<DumbHostObject> *results,
               std::shared_ptr<std::vector<SmartHostObject>> metadata);
 
 jsi::Value create_js_rows(jsi::Runtime &rt, const BridgeResult &status);
 
 jsi::Value
-create_raw_result(jsi::Runtime &rt, BridgeResult status,
+create_raw_result(jsi::Runtime &rt, const BridgeResult &status,
                   const std::vector<std::vector<JSVariant>> *results);
 
 void to_batch_arguments(jsi::Runtime &rt, jsi::Array const &batch_params,
@@ -47,6 +47,4 @@ bool folder_exists(const std::string &name);
 
 bool file_exists(const std::string &path);
 
-std::vector<std::string> parse_string_list(const std::string &str);
-
 } // namespace opsqlite