Function shutdown

scripts/dev-safe.mjs:910–930

(signal = "SIGTERM")

  let frontend = null;

  const shutdown = (signal = "SIGTERM") => {
    if (shuttingDown) {
      return;
    }

    shuttingDown = true;
    if (frontend) {
      signalProcessTree(frontend, signal);
    }
    signalProcessTree(backend, signal);

    setTimeout(() => {
      if (frontend && isProcessRunning(frontend)) {
        signalProcessTree(frontend, "SIGKILL");
      }
      if (isProcessRunning(backend)) {
        signalProcessTree(backend, "SIGKILL");
      }
      process.exit(process.exitCode ?? 0);
    }, 3000);
  };

  process.on("SIGINT", () => shutdown("SIGINT"));
  process.on("SIGTERM", () => shutdown("SIGTERM"));