Question

在下面的代码中，没有像definitions这样的内容，但仍然出现此错误：

 Error: (SystemJS) Cannot read property 'definitions' of undefined
 TypeError: Cannot read property 'definitions' of undefined

见下面的代码：

dashboard.component.ts：

import { Component, OnInit,HostBinding } from '@angular/core';
import { slideAnimation } from './animations/animations';

@Component({
    moduleId:module.id,
    selector:'my-dashboard',
    templateUrl: 'dashboard.component.html',
    styleUrls: [ 'dashboard.component.css' ],
    animations: [ slideAnimation ]
})
export class DashboardComponent implements OnInit{

@HostBinding('@routeAnimation') routeAnimation = true;
@HostBinding('style.display')   display = 'block';
@HostBinding('style.position')  position = 'absolute';

  ngOnInit(): void {

  }
 }

animation.ts：

import { animate, AnimationEntryMetadata, state, style, transition, trigger } from '@angular/core';
export const slideInDownAnimation: AnimationEntryMetadata =
  trigger('routeAnimation', [
    state('*',
      style({
        opacity: 1,
        transform: 'translateX(0)'
      })
    )
  ]);

Answer 1

得到答案：

我应该使用

import { slideInDownAnimation } from './animations/animations';

代替

import { SomthingElse } from './animations/animations';

我要导入的任何地方。

无法读取角度2中未定义的属性“定义”？

1 个答案: