ES7 version of http://pastebin.com/raw.php?i=yEB4mrty

es7.js

import {inject} from 'aurelia-framework';
import {HttpClient} from 'aurelia-http-client';

@inject(HttpClient)
export class ClusterList {
  heading = 'Clusters';
  url_base = 'https://foobar:443/v1';
  fabrics = [];

  constructor(http){
    this.http = http;
  }

  async activate(params) {
  	const fabric_response = await this.http.get(this.url_base + '/fabrics');

  	return await Promise.all(fabric_response.content.map(async fabric => {
  		const cluster_response = await this.http.get(`${this.url_base}/fabrics/${fabric.name}/clusters`);

  		if (fabric.clusters_exist) {
  			this.fabrics.push({ name : fabric.name, clusters : cluster_response.content });
  		}

  		return cluster_response;
  	}));
  }
}