Function throw

lib/events.js:1133–1139

(err)

    },

    throw(err) {
      if (!err || !(err instanceof Error)) {
        throw new ERR_INVALID_ARG_TYPE('EventEmitter.AsyncIterator',
                                       'Error', err);
      }
      errorHandler(err);
    },
    [SymbolAsyncIterator]() {
      return this;
    },