Function emitUnhandledRejectionWarning

lib/internal/process/promises.js:225–246

* @param {PromiseInfo} promiseInfo

(promiseInfo)

 * @param {PromiseInfo} promiseInfo
 */
function emitUnhandledRejectionWarning(promiseInfo) {
  const warning = new UnhandledPromiseRejectionWarning(promiseInfo.uid);
  const reason = promiseInfo.reason;
  try {
    if (isErrorLike(reason)) {
      warning.stack = reason.stack;
      process.emitWarning(reason.stack, unhandledRejectionErrName);
    } else {
      process.emitWarning(
        noSideEffectsToString(reason), unhandledRejectionErrName);
    }
  } catch {
    try {
      process.emitWarning(
        noSideEffectsToString(reason), unhandledRejectionErrName);
    } catch {
      // Ignore.
    }
  }

  process.emitWarning(warning);
}

/**
 * @callback UnhandledRejectionsModeHandler