import { NodeTracerProvider } from "@opentelemetry/sdk-trace-node";
import {
LangChainInstrumentation
} from "@arizeai/openinference-instrumentation-langchain";
import * as CallbackManagerModule from "@langchain/core/callbacks/manager";
const provider = new NodeTracerProvider();
provider.register();
const lcInstrumentation = new LangChainInstrumentation();
// LangChain must be manually instrumented as it doesn't have
// a traditional module structure
lcInstrumentation.manuallyInstrument(CallbackManagerModule);
This module provides automatic instrumentation for LangChain.js, more specifically, the @langchain/core module. which may be used in conjunction with @opentelemetry/sdk-trace-node.