Materialize css carousel在Angular中不起作用

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>

import { Component, AfterViewInit } from '@angular/core';

declare var M: any; // 声明Materialize对象

@Component({
  selector: 'app-carousel',
  templateUrl: './carousel.component.html',
  styleUrls: ['./carousel.component.css']
})
export class CarouselComponent implements AfterViewInit {

  ngAfterViewInit() {
    var elems = document.querySelectorAll('.carousel');
    M.Carousel.init(elems, options);
  }

}

<div class="carousel">
  <a class="carousel-item" href="#one!"><img src="image1.jpg"></a>
  <a class="carousel-item" href="#two!"><img src="image2.jpg"></a>
  <a class="carousel-item" href="#three!"><img src="image3.jpg"></a>
</div>