Vulcan/packages/nova-posts/lib/collection.js

const PostsStub = {
  helpers: x => x
}

/* we need to handle two scenarios: when the package is called as a Meteor package, 
and when it's called as a NPM package */
const Posts = typeof Mongo !== 'undefined' ? new Mongo.Collection('posts') : PostsStub;

Posts.typeName = 'Post';

export default Posts;