From 3376d08fd9660102986c0036b34f8c3178173b40 Mon Sep 17 00:00:00 2001
From: Ryan Cormack <ryancormack89@gmail.com>
Date: Wed, 21 May 2025 17:34:22 +0100
Subject: [PATCH] fix: Format response text from server in example client
 implementation

- `String(result)` often ends up calling down to toString on the object. When there is a large JSON object, it ends up with `object Object`
- This formats this, attempting to stringify objects, or eventually calling back down to String(text)
---
 .../typescript/src/server_clients/server.ts        | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/examples/chatbots/typescript/src/server_clients/server.ts b/examples/chatbots/typescript/src/server_clients/server.ts
index 9146862..a2eeb0d 100644
--- a/examples/chatbots/typescript/src/server_clients/server.ts
+++ b/examples/chatbots/typescript/src/server_clients/server.ts
@@ -99,7 +99,7 @@ export abstract class Server {
 
         return {
           toolUseId: toolUseId,
-          content: [{ text: String(result) }],
+          content: [{ text: this.formatText(result) }],
           status: "success",
         };
       } catch (e) {
@@ -124,4 +124,16 @@ export abstract class Server {
     // This should never be reached due to the loop above
     throw new Error("Unexpected error in executeTool");
   }
+
+  formatText(text: unknown): string {
+    if (typeof text === "string") {
+      return text;
+    } else if (Array.isArray(text)) {
+      return text.map((item) => this.formatText(item)).join("\n");
+    } else if (typeof text === "object" && text !== null) {
+      return JSON.stringify(text);
+    } else {
+      return String(text);
+    }
+  }
 }