@langchain/openai/dist/utils/misc.js

OpenAI integrations for LangChain.js

import { ChatMessage } from "@langchain/core/messages";

//#region src/utils/misc.ts
const iife$1 = (fn) => fn();
function isReasoningModel(model) {
	if (!model) return false;
	if (/^o\d/.test(model ?? "")) return true;
	if (model.startsWith("gpt-5") && !model.startsWith("gpt-5-chat")) return true;
	return false;
}
function extractGenericMessageCustomRole(message) {
	if (message.role !== "system" && message.role !== "developer" && message.role !== "assistant" && message.role !== "user" && message.role !== "function" && message.role !== "tool") console.warn(`Unknown message role: ${message.role}`);
	return message.role;
}
function getRequiredFilenameFromMetadata(block) {
	const filename = block.metadata?.filename ?? block.metadata?.name ?? block.metadata?.title;
	if (!filename) throw new Error("a filename or name or title is needed via meta-data for OpenAI when working with multimodal blocks");
	return filename;
}
function messageToOpenAIRole(message) {
	const type = message._getType();
	switch (type) {
		case "system": return "system";
		case "ai": return "assistant";
		case "human": return "user";
		case "function": return "function";
		case "tool": return "tool";
		case "generic":
			if (!ChatMessage.isInstance(message)) throw new Error("Invalid generic chat message");
			return extractGenericMessageCustomRole(message);
		default: throw new Error(`Unknown message type: ${type}`);
	}
}
function _modelPrefersResponsesAPI(model) {
	return model.includes("gpt-5.2-pro");
}

//#endregion
export { _modelPrefersResponsesAPI, getRequiredFilenameFromMetadata, iife$1 as iife, isReasoningModel, messageToOpenAIRole };
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