wekan/models/lib/grid/createBucket.js

import { MongoInternals } from 'meteor/mongo';

export const createBucket = bucketName => {
  const options = bucketName ? { bucketName } : void 0;
  return new MongoInternals.NpmModule.GridFSBucket(
    MongoInternals.defaultRemoteCollectionDriver().mongo.db,
    options,
  );
};