From 735d9b86acdc067e1ee6ebe1ea50de2955431050 Mon Sep 17 00:00:00 2001
From: Stainless Bot <107565488+stainless-bot@users.noreply.github.com>
Date: Tue, 28 Nov 2023 18:33:57 -0500
Subject: [PATCH] fix: prevent 400 when using runTools/runFunctions with Azure
 OpenAI API (#544)

---
 src/lib/AbstractChatCompletionRunner.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/lib/AbstractChatCompletionRunner.ts b/src/lib/AbstractChatCompletionRunner.ts
index 60b1e5602..a485c487d 100644
--- a/src/lib/AbstractChatCompletionRunner.ts
+++ b/src/lib/AbstractChatCompletionRunner.ts
@@ -90,7 +90,11 @@ export abstract class AbstractChatCompletionRunner<
   }
 
   protected _addMessage(message: ChatCompletionMessageParam, emit = true) {
+    // @ts-expect-error this works around a bug in the Azure OpenAI API in which `content` is missing instead of null.
+    if (!('content' in message)) message.content = null;
+
     this.messages.push(message);
+
     if (emit) {
       this._emit('message', message);
       if ((isFunctionMessage(message) || isToolMessage(message)) && message.content) {