Update exports

src/index.ts

@@ -1,6 +1,6 @@
 export { Assistant } from "./assistant";
 export { promptWithPick } from "./chains/prompt-with-pick";
 export { promptWithRetry } from "./chains/prompt-with-retry";
+export { createChatCompletionFunction } from "./function";
 export { createOpenAIClient, getDefaultOpenAIClient } from "./openai-client";
 export { Thread } from "./thread";
-