无法在Angular2中创建对象数组

export class Person {
  name: string;
  age: number;
}

import { Component } from '@angular/core';
import { Person } from './person';

@Component({
  selector: 'app-root',
  template: `
    <ul>
      <li *ngFor="let person of people">{{ person.name }} - {{ person.age }}</li>
    </ul>
  `
})
export class AppComponent {
  people: Person[] = [];

  constructor() {
    // 创建对象并添加到数组中
    const person1 = new Person();
    person1.name = "John";
    person1.age = 25;
    this.people.push(person1);

    const person2 = new Person();
    person2.name = "Jane";
    person2.age = 30;
    this.people.push(person2);
  }
}