chore: lint files

docs/core_docs/docs/integrations/chat/anthropic_tools.mdx

@@ -4,7 +4,7 @@ sidebar_class_name: hidden
 ---
 
 :::warning
-This API is deprecated as Anthropic now officially supports tools. [Click here to read the documentation](/docs/models/chat/anthropic#tools).
+This API is deprecated as Anthropic now officially supports tools. [Click here to read the documentation](/docs/integrations/chat/anthropic#tools).
 :::
 
 # Anthropic Tools

libs/langchain-google-common/src/utils/gemini.ts

@@ -91,14 +91,24 @@ export function messageContentToParts(content: MessageContent): GeminiPart[] {
     .map((content) => {
       switch (content.type) {
         case "text":
-          return messageContentText(content);
+          if ("text" in content) {
+            return messageContentText(content as MessageContentText);
+          }
+          break;
         case "image_url":
-          return messageContentImageUrl(content);
+          if ("image_url" in content) {
+            // Type guard for MessageContentImageUrl
+            return messageContentImageUrl(content as MessageContentImageUrl);
+          }
+          break;
         default:
           throw new Error(
             `Unsupported type received while converting message to message parts`
           );
       }
+      throw new Error(
+        `Cannot coerce "${content.type}" message part into a string.`
+      );
     })
     .reduce((acc: GeminiPart[], val: GeminiPart | null | undefined) => {
       if (val) {