happn-3/lib/services/publisher/config.js

pub/sub api as a service using primus and mongo & redis or nedb, can work as cluster, single process or embedded using nedb

function PublisherConfig() {}

PublisherConfig.prototype.setProperty = function (recipient, name, value) {
  Object.defineProperty(recipient, name, {
    value: value,
    writable: true,
  });
};

module.exports = new PublisherConfig();