@juspay/neurolink/dist/proxy/workerLog.js

The pipe layer of an AI nervous system: one interface connecting provider neurons to your application, across three inference types — generate, stream and decide. `decide` returns typed, calibrated judgements from a non-generative model (~400ms, ~$0.00002

import { isProxyOtelOnly } from "./otelLogSink.js";
import { chmodSync, closeSync, existsSync, mkdirSync, openSync, statSync, } from "node:fs";
import { homedir } from "node:os";
import { basename, join } from "node:path";
/** Open a restrictive worker log without making proxy startup depend on it. */
export function openProxyWorkerLog(filename, logDir = join(homedir(), ".neurolink", "logs")) {
    if (isProxyOtelOnly()) {
        return { stdio: "ignore", close: () => undefined };
    }
    let fd;
    try {
        if (basename(filename) !== filename) {
            throw new Error("worker log filename must not contain a path");
        }
        if (!existsSync(logDir)) {
            mkdirSync(logDir, { recursive: true, mode: 0o700 });
        }
        else if (!statSync(logDir).isDirectory()) {
            throw new Error("worker log path exists but is not a directory");
        }
        chmodSync(logDir, 0o700);
        const path = join(logDir, filename);
        fd = openSync(path, "a", 0o600);
        chmodSync(path, 0o600);
        return {
            stdio: fd,
            close: () => closeSync(fd),
        };
    }
    catch (error) {
        if (fd !== undefined) {
            try {
                closeSync(fd);
            }
            catch {
                // The log is optional and startup must remain fail-open.
            }
        }
        return {
            stdio: "ignore",
            close: () => undefined,
            error: error instanceof Error ? error.message : String(error),
        };
    }
}