code: function emitToUsers(users, channelName, data) {
          const usersArray = Array.isArray(users) ? users : [users];
          usersArray.map(function (user) {
              Object.keys(io.sockets.sockets).filter(function (key) {
                  return io.sockets.sockets[key].transomUser._id.toString() === user._id.toString();
              }).map(function (socketKey) {
                  io.sockets.sockets[socketKey].emit(channelName, data);
              });
          });
      }
docs: Emit 'data' to all sockets for the provided User or array of Users.
  
  @param {*} channelName
  @param {*} users
  @param {*} data