Node.js 如何在angular4中导入名称中带有连字符的npm模块

我想在angular4项目中使用

array-to-tree

npm模块。但是当我使用

import{array to tree}从'array to tree'导入时它给出错误字符串

请帮忙。
我猜你可以用：

import * as arrayToTree from ‘array-to-tree’

然后，
arrayToTree
就是您可以使用的函数。
我猜您可以使用：

import * as arrayToTree from ‘array-to-tree’

然后，
arrayToTree
是您可以使用的函数。
请尝试此功能

import * as arrayToTree from 'array-to-tree';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent {

  dataOne = [
    {
      id: 1,
      name: 'Portfolio',
      parent_id: undefined
    },
    {
      id: 2,
      name: 'Web Development',
      parent_id: 1
    },
    {
      id: 3,
      name: 'Recent Works',
      parent_id: 2
    },
    {
      id: 4,
      name: 'About Me',
      parent_id: undefined
    }
  ];

  data = arrayToTree(this.dataOne);

  constructor() {
    console.log(this.data );
  }
}

注意：如果您没有将arrayToTree的结果（this.dataOne）分配给变量，那么typescript将抛出错误

[ts] Function implementation is missing or not immediately following the declaration.
(method) AppComponent.arrayToTree(this: any, dataOne: any): any

请试试这个

import * as arrayToTree from 'array-to-tree';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent {

  dataOne = [
    {
      id: 1,
      name: 'Portfolio',
      parent_id: undefined
    },
    {
      id: 2,
      name: 'Web Development',
      parent_id: 1
    },
    {
      id: 3,
      name: 'Recent Works',
      parent_id: 2
    },
    {
      id: 4,
      name: 'About Me',
      parent_id: undefined
    }
  ];

  data = arrayToTree(this.dataOne);

  constructor() {
    console.log(this.data );
  }
}

注意：如果您没有将arrayToTree的结果（this.dataOne）分配给变量，那么typescript将抛出错误

[ts] Function implementation is missing or not immediately following the declaration.
(method) AppComponent.arrayToTree(this: any, dataOne: any): any