How to use the @optimizely/js-sdk-logging.getErrorHandler function in @optimizely/js-sdk-logging

} else {
        eventDispatcher = config.eventDispatcher;
      }

      config = fns.assignIn(
        {
          clientEngine: enums.JAVASCRIPT_CLIENT_ENGINE,
          eventBatchSize: DEFAULT_EVENT_BATCH_SIZE,
          eventFlushInterval: DEFAULT_EVENT_FLUSH_INTERVAL,
        },
        config,
        {
          eventDispatcher: eventDispatcher,
          // always get the OptimizelyLogger facade from logging
          logger: logger,
          errorHandler: logging.getErrorHandler(),
        }
      );

      if (!eventProcessorConfigValidator.validateEventBatchSize(config.eventBatchSize)) {
        logger.warn('Invalid eventBatchSize %s, defaulting to %s', config.eventBatchSize, DEFAULT_EVENT_BATCH_SIZE);
        config.eventBatchSize = DEFAULT_EVENT_BATCH_SIZE;
      }
      if (!eventProcessorConfigValidator.validateEventFlushInterval(config.eventFlushInterval)) {
        logger.warn('Invalid eventFlushInterval %s, defaulting to %s', config.eventFlushInterval, DEFAULT_EVENT_FLUSH_INTERVAL);
        config.eventFlushInterval = DEFAULT_EVENT_FLUSH_INTERVAL;
      }

      var optimizely = new Optimizely(config);

      try {
        if (typeof window.addEventListener === 'function') {

if (config.skipJSONValidation == null) { // eslint-disable-line eqeqeq
        config.skipJSONValidation = true;
      }

      config = fns.assignIn(
        {
          clientEngine: enums.JAVASCRIPT_CLIENT_ENGINE,
          eventBatchSize: DEFAULT_EVENT_BATCH_SIZE,
          eventDispatcher: defaultEventDispatcher,
          eventFlushInterval: DEFAULT_EVENT_FLUSH_INTERVAL,
        },
        config,
        {
          // always get the OptimizelyLogger facade from logging
          logger: logger,
          errorHandler: logging.getErrorHandler(),
        }
      );

      if (!eventProcessorConfigValidator.validateEventBatchSize(config.eventBatchSize)) {
        logger.warn('Invalid eventBatchSize %s, defaulting to %s', config.eventBatchSize, DEFAULT_EVENT_BATCH_SIZE);
        config.eventBatchSize = DEFAULT_EVENT_BATCH_SIZE;
      }
      if (!eventProcessorConfigValidator.validateEventFlushInterval(config.eventFlushInterval)) {
        logger.warn('Invalid eventFlushInterval %s, defaulting to %s', config.eventFlushInterval, DEFAULT_EVENT_FLUSH_INTERVAL);
        config.eventFlushInterval = DEFAULT_EVENT_FLUSH_INTERVAL;
      }

      var optimizely = new Optimizely(config);

      return optimizely;
    } catch (e) {

}

      config = fns.assign(
        {
          clientEngine: enums.NODE_CLIENT_ENGINE,
          eventBatchSize: DEFAULT_EVENT_BATCH_SIZE,
          eventDispatcher: defaultEventDispatcher,
          eventFlushInterval: DEFAULT_EVENT_FLUSH_INTERVAL,
          jsonSchemaValidator: jsonSchemaValidator,
          skipJSONValidation: false,
        },
        config,
        {
          // always get the OptimizelyLogger facade from logging
          logger: logger,
          errorHandler: logging.getErrorHandler(),
        }
      );

      if (!eventProcessorConfigValidator.validateEventBatchSize(config.eventBatchSize)) {
        logger.warn('Invalid eventBatchSize %s, defaulting to %s', config.eventBatchSize, DEFAULT_EVENT_BATCH_SIZE);
        config.eventBatchSize = DEFAULT_EVENT_BATCH_SIZE;
      }
      if (!eventProcessorConfigValidator.validateEventFlushInterval(config.eventFlushInterval)) {
        logger.warn('Invalid eventFlushInterval %s, defaulting to %s', config.eventFlushInterval, DEFAULT_EVENT_FLUSH_INTERVAL);
        config.eventFlushInterval = DEFAULT_EVENT_FLUSH_INTERVAL;
      }

      return new Optimizely(config);
    } catch (e) {
      logger.error(e);
      return null;