class Person {

id: Id;

address: Address;

constructor (@Inject(Id) id, @Inject(Address) address) {

this.id= id;

this.address= address;

}

}

class Id {

static getInstance(type: string):Id {

//设置

return new Id();

}

}

class Address {

province: string;

city: string;

districe: string;

street: string;

constructor(province,city,districe,street) {

this.province= province;

this.city= city;

this.districe= districe;

this.street= street;

}

}

----------------------------------------------------

export class AppComponent {

// squareState: string;

darkTheme = false;

constructor(private oc: OverlayContainer) {

const injector = ReflectiveInjector.resolveAndCreate([

{provide: Person, useClass: Person},

{provide: Address, useFactory: () => {

if( environment.production ) {

return new Address('北京','北京','昌平','回龙观');

} else {

return new Address('西藏','拉萨','xxx','xxx');

}

}},

{provide: Id, useFactory: () => {

return Id.getInstance('idCard');

}},

]);

const person= injector.get(Person);

console.log(JSON.stringify(person));

}

求指教问题及解决办法