如何在Angular 2中使用羽毛 - 客户端和superagent？

Question

import { Injectable } from '@angular/core';
import * as feathers from 'feathers-client';
import * as superagent from 'superagent';
// const superagent = require('superagent');
// const feathers = require('feathers/client');
// const rest = require('feathers-rest/client');
// import * as rest from 'feathers-rest/client';

const HOST = 'http://localhost:3030'; // Your base server URL here
const rest = feathers.rest(HOST);

@Injectable()
export class ApiService {
  private _app: any;
  constructor() {
    this._app = feathers() // Initialize feathers
      .configure(rest.superagent(superagent)); // Fire up rest
  }

  public test() {
      console.log('pepowopeoepeepw');
  }

}

我尝试过很多东西，但一直都是错误

1. src / client / app / services / api-service.ts（11,23）：错误TS2339：属性＆＃39;休息＆＃39;在＆＃39; typeof＆＃34;
类型中不存在
2. src / client / app / services / api-service.ts（18,17）：错误TS2349：无法调用类型缺少调用签名的表达式。
3. node_modules / feathers-client / index.d.ts（25,3）：错误TS7010：＆＃39; on＆＃39;，缺少返回类型注释，隐含有＆＃39; any＆ ＃39;返回类型。

不确定是什么问题？