Does anyone have experience with Feathersjs as an alternative? http://feathersjs.com http://feathersjs.com It looks very similar to Firebase, but free, open so

Does anyone have experience with Feathersjs as an alternative? http://feathersjs.com http://feathersjs.com It looks very similar to Firebase, but free, open source, and one advantage over others is being able to use several databases through various ORM's, so you could mix and match, for example, Postgres and DynamoDB as desired. Must be using Node.js, though these days I think you might even be able to use Koa or Hapi in addition to default Express.