app/node_modules/@langchain/core/dist/utils/callbacks.js

import { getEnvironmentVariable } from "./env.js";
export const isTracingEnabled = (tracingEnabled) => {
    if (tracingEnabled !== undefined) {
        return tracingEnabled;
    }
    const envVars = [
        "LANGSMITH_TRACING_V2",
        "LANGCHAIN_TRACING_V2",
        "LANGSMITH_TRACING",
        "LANGCHAIN_TRACING",
    ];
    return !!envVars.find((envVar) => getEnvironmentVariable(envVar) === "true");
};