code: function emitOverFastPath(state, msgObj, messageJson) {
    if (!state.options.node.useFastPath) return; // disabled
  
    var others = OTHER_INSTANCES[state.channelName].filter(function (s) {
      return s !== state;
    });
    var checkObj = {
      time: msgObj.time,
      senderUuid: msgObj.uuid,
      token: msgObj.token
    };
    others.filter(function (otherState) {
      return _filterMessage(checkObj, otherState);
    }).forEach(function (otherState) {
      otherState.messagesCallback(messageJson);
    });
  }
docs: When multiple BroadcastChannels with the same name
  are created in a single node-process, we can access them directly and emit messages.
  This might not happen often in production
  but will speed up things when this module is used in unit-tests.