bigbluebutton-Github/bigbluebutton-html5/imports/api/users/server/modifiers/clearUsers.js

import Logger from '/imports/startup/server/logger';
import Users from '/imports/api/users/index';

const clearUsers = (meetingId) => {
  if (meetingId) {
    return Users.remove({ meetingId }, () => {
      Logger.info(`Cleared Users (${meetingId})`);
    });
  }

  return Users.remove({}, () => {
    Logger.info('Cleared Users (all)');
  });
};

export default clearUsers;