fix(chat-models): Throw exception if a system message passed to gemini (

davidmigloz#271)
KennethKnudsen97 · Apr 22, 2024 · c59bc9d · c59bc9d
1 parent d5d4732
commit c59bc9d
Showing 1 changed file with 3 additions and 4 deletions.
diff --git a/packages/langchain_google/lib/src/chat_models/google_ai/models/mappers.dart b/packages/langchain_google/lib/src/chat_models/google_ai/models/mappers.dart
@@ -13,10 +13,9 @@ extension ChatMessagesMapper on List<ChatMessage> {
   List<Content> toContentList() {
     return map(
       (final message) => switch (message) {
-        // Gemini does not support system messages yet, so we include it as user message
-        final SystemChatMessage msg => Content(
-            role: _authorUser,
-            parts: [Part(text: msg.content)],
+        SystemChatMessage() => throw UnsupportedError(
+            'Google AI does not support system messages at the moment. '
+            'Attach your system message in the human message.',
           ),
         final HumanChatMessage msg => Content(
             role: _authorUser,