How to extend / inherit components?

Question

I would like to create extensions for some components already deployed in Angular 2, without having to rewrite them almost completely, as the base component could undergo ch

Answer 1

just use inheritance,Extend parent class in child class and declare constructor with parent class parameter and this parameter use in super().

1.parent class
@Component({
    selector: 'teams-players-box',
    templateUrl: '/maxweb/app/app/teams-players-box.component.html'
})
export class TeamsPlayersBoxComponent {
    public _userProfile:UserProfile;
    public _user_img:any;
    public _box_class:string="about-team teams-blockbox";
    public fullname:string;
    public _index:any;
    public _isView:string;
    indexnumber:number;
    constructor(
        public _userProfilesSvc: UserProfiles,
        public _router:Router,
    ){}
2.child class
@Component({

    selector: '[teams-players-eligibility]',
    templateUrl: '/maxweb/app/app/teams-players-eligibility.component.html'
})
export class TeamsPlayersEligibilityComponent extends TeamsPlayersBoxComponent{

    constructor (public _userProfilesSvc: UserProfiles,
            public _router:Router) {
            super(_userProfilesSvc,_router);
        }
}