Function getUnhandledRejectionsMode

lib/internal/process/promises.js:348–364

* @returns {UnhandledRejectionsModeHandler}

()

 * @returns {UnhandledRejectionsModeHandler}
 */
function getUnhandledRejectionsMode() {
  const { getOptionValue } = require('internal/options');
  switch (getOptionValue('--unhandled-rejections')) {
    case 'none':
      return ignoreUnhandledRejectionsMode;
    case 'warn':
      return alwaysWarnUnhandledRejectionsMode;
    case 'strict':
      return strictUnhandledRejectionsMode;
    case 'throw':
      return throwUnhandledRejectionsMode;
    case 'warn-with-error-code':
      return warnWithErrorCodeUnhandledRejectionsMode;
    default:
      return throwUnhandledRejectionsMode;
  }
}

// If this method returns true, we've executed user code or triggered
// a warning to be emitted which requires the microtask and next tick