Function warnWithErrorCodeUnhandledRejectionsMode

lib/internal/process/promises.js:336–343

* --unhandled-rejections=warn-with-error-code: * Emit 'unhandledRejection', if it's unhandled, emit * 'UnhandledPromiseRejectionWarning', then set process exit code to 1. * @type {UnhandledRejectionsModeHandler}

(promise, promiseInfo)

 * @type {UnhandledRejectionsModeHandler}
 */
function warnWithErrorCodeUnhandledRejectionsMode(promise, promiseInfo) {
  const handled = emitUnhandledRejection(promise, promiseInfo);
  if (!handled) {
    emitUnhandledRejectionWarning(promiseInfo);
    process.exitCode = kGenericUserError;
  }
  return true;
}

/**
 * @returns {UnhandledRejectionsModeHandler}