Angular 5.将类导入到彼此时,在typescript中的循环依赖

<radio-group [(value)]='SELEcted'>
  <radio value='1'></radio>
  <radio value='2'></radio>
  <radio value='3'></radio>
</radio-group>

当用户选择和取消选择项目时,它们彼此通信.

组件实现示例
RadioGroupComponent：

import { Component,forWARDRef,Input,Optional,ContentChildren,QueryList,EventEmitter,Output,ChangeDetectorRef,ChangeDetectionStrategy,AfterContenTinit,OnChanges } from '@angular/core';
import { RadioGroup } from './radio-group.component';

@Component({
  SELEctor: 'radio',styles: [`:host{cursor:pointer;}`],template: `<div (click)='check()'>
  <span *ngIf='!checked'>⚪️</span>
  <span *ngIf='checked'>