import { A } from '@ember/array'; import ArrayProxy from '@ember/array/proxy'; import { next } from '@ember/runloop'; /** * This is an array whose content is empty until the next * tick, which fixes Storybook race condition rendering * problems. */ export default ArrayProxy.extend({ init(array) { this.set('content', A([])); this._super(...arguments); this[Symbol.iterator] = this.content[Symbol.iterator]; next(this, () => { this.set('content', A(array)); this[Symbol.iterator] = this.content[Symbol.iterator]; }); }, });