import $ from 'jquery'
import Backbone from 'backbone'

var { Model, View, Collection, Router, LocalStorage } = Backbone;

var Folder = Backbone.Model.extend({
    idAttribute: '_id',
    defaults: {
        name: "",
        bookmarks : []
    }
});
export default Folder

import Backbone from 'backbone'
import {Folder} from '../models/folder.js'

var { Collection } = Backbone;

var FolderCollections = Backbone.Collection.extend({
  url: "/api/folders",
  model: Folder,
});
export default FolderCollections

window.Folder = Folder
window.FolderCollections = FolderCollections

var folder = new FolderCollections()
folder.fetch()

TypeError: Cannot read property 'prototype' of undefined