import Comments from './collection.js'; import Authors from '../authors/collection.js'; import Posts from '../posts/collection.js'; Comments.addLinks({ author: { type: 'one', collection: Authors, field: 'authorId', index: true }, post: { type: 'one', collection: Posts, field: 'postId', index: true } }); Comments.addReducers({ authorLinkReducer: { body: { author: { name: 1, }, }, reduce(object) { return object.author; } } });