fix(openai): export converter functions (#9383)

Author: hntrl

.changeset/hip-monkeys-carry.md

@@ -0,0 +1,5 @@
+---
+"@langchain/openai": patch
+---
+
+export converters

libs/providers/langchain-openai/src/index.ts

@@ -1,5 +1,12 @@
 export { OpenAI as OpenAIClient, type ClientOptions, toFile } from "openai";
 
+export { type AzureChatOpenAIFields } from "./azure/chat_models/common.js";
+export { AzureChatOpenAICompletions } from "./azure/chat_models/completions.js";
+export { AzureChatOpenAIResponses } from "./azure/chat_models/responses.js";
+export { AzureChatOpenAI } from "./azure/chat_models/index.js";
+export * from "./azure/llms.js";
+export * from "./azure/embeddings.js";
+
 export {
   type BaseChatOpenAICallOptions,
   type BaseChatOpenAIFields,
@@ -21,14 +28,7 @@ export {
   ChatOpenAI,
 } from "./chat_models/index.js";
 
-export { type AzureChatOpenAIFields } from "./azure/chat_models/common.js";
-export { AzureChatOpenAICompletions } from "./azure/chat_models/completions.js";
-export { AzureChatOpenAIResponses } from "./azure/chat_models/responses.js";
-export { AzureChatOpenAI } from "./azure/chat_models/index.js";
-
 export * from "./llms.js";
-export * from "./azure/llms.js";
-export * from "./azure/embeddings.js";
 export * from "./embeddings.js";
 export * from "./types.js";
 export * from "./utils/client.js";
@@ -37,3 +37,5 @@ export * from "./tools/index.js";
 export { customTool } from "./tools/custom.js";
 export { convertPromptToOpenAI } from "./utils/prompts.js";
 export { messageToOpenAIRole } from "./utils/misc.js";
+
+export * from "./converters/index.js";