How to use the react-relay-network-modern.loggerMiddleware function in react-relay-network-modern

_createRelayNetworkLayer() {
    return new RelayNetworkLayer(
      [
        // batchMiddleware({
        //   batchUrl: '/graphql/batch',
        //   batchTimeout: 20,
        // }),
        cacheMiddleware({
          size: 100,
          ttl: 15 * 60 * 1000, // 15 minutes
          onInit: cache => (this._cache = cache),
        }),
        urlMiddleware({
          url: this.endpoint,
        }),
        __DEV__ ? loggerMiddleware() : null,
        // __DEV__ ? perfMiddleware() : null,
        !__DEV__
          ? retryMiddleware({
              // [3200, 6400, 12800, 25600, 51200, 102400, 204800, 409600, ...],
              retryDelays: attempt => 2 ** (attempt + 4) * 100,
              forceRetry: (cb, delay) => {
                window.forceRelayRetry = cb;
                // eslint-disable-next-line
                console.log(`call 'forceRelayRetry()' for immediately retry! Or wait ${delay} ms.`);
              },
            })
          : null,
        __DEV__ ? gqlErrorsMiddleware() : null,
      ].filter(o => !!o)
    );
  }