原文為：

import { Component, Inject, ReflectiveInjector } from "@angular/core";
import { OverlayContainer } from "@angular/material";
import { environment } from "../environments/environment";

@Component({
  selector: "app-root",
  templateUrl: "./app.component.html",
  styleUrls: ["./app.component.css"]
})
export class AppComponent {
  darkTheme = false;
  squareState: string;

  constructor(private oc: OverlayContainer) {
    const injector = ReflectiveInjector.resolveAndCreate([
      { provide: Person, useClass: Person },
      {
        provide: Address,
        useFactory: () => {
          if (this.darkTheme) {
            return new Address("北京", "北京", "朝陽(yáng)區(qū)", "xx 街道 xx 號(hào)");
          } else {
            return new Address("西藏", "拉薩", "xx區(qū)", "xx 街道 xx 號(hào)");
          }
        }
      },
      {
        provide: Id,
        useFactory: () => {
          return Id.getInstance("idcard");
        }
      }
    ]);

    const person = injector.get(Person);
    console.log(JSON.stringify(person));
  }

  switchTheme(dark) {
    this.darkTheme = dark;
    this.oc.themeClass = dark ? "myapp-dark-theme" : null;
  }
}

export class Id {
  getInstance(type: string): Id {
    //設(shè)置
    return new Id();
  }
}

export class Address {
  province: string;
  city: string;
  district: string;
  street: string;
  constructor(province, city, district, street) {
    this.province = province;
    this.city = city;
    this.district = district;
    this.street = street;
  }
}

export class Person {
  id: Id;
  address: Address;
  constructor(@Inject(Id) id, @Inject(Address) address) {
    this.id = Id;
    this.address = Address;
  }
}

ERROR in E:/前端/ng2/999/now/0405newNg/my-app/src/app/app.component.ts (30,21): Property 'getInstance' does not exist on type 'typeof Id'.

ERROR in E:/前端/ng2/999/now/0405newNg/my-app/src/app/app.component.ts (69,5): Type 'typeof Id' is not assignable to type 'Id'.
Property 'getInstance' is missing in type 'typeof Id'.

ERROR in E:/前端/ng2/999/now/0405newNg/my-app/src/app/app.component.ts (70,5): Type 'typeof Address' is not assignable to type 'Address'.
Property 'province' is missing in type 'typeof Address'.