问与webpack“导入”ing d3和d3云

EN

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

//  import and assign libs  **
    import d3 from 'd3' 
    import * as cloud from 'd3-cloud'


@Component({
  selector: 'word-cloud',
  templateUrl: './word-cloud.component.html',
  styleUrls: ['./word-cloud.component.scss'],
  providers: []
})

export class WordCloudComponent implements AfterViewInit {
  constructor() { }


  ngAfterViewInit() {

    d3.scale.category20();
    let layout = cloud()
       .size([ width   ,  height   ])
      .words(data)
      .rotate(function () ...)
      .spiral('rectangular')
      .fontSize(function () ...)
      .on("end", function () ...)
      .start();

}