angular 提示错误TSLint: The selector

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

@Component({
  selector: 'login-page',
  templateUrl: './login.component.html',
  styleUrls: ['./login.component.css']
})
export class LoginComponent {
}

selector提示红色，意思是应该有前缀app.修改为app-login-page即可