angular - Panel Accordion in Angular2 -


i trying use accordion or panel in angular 2.0.0-beta.15, when tried make work, have following message "property 'ngondestroy' missing in type 'ngbaccordiongroup"

import {bootstrap} '@angular/platform-browser-dynamic'; import {component, ondestroy} '@angular/core';  @component({   selector: 'ngb-accordion,[ngb-accordion]',   inputs: ['onlyoneopen: closeothers'],   template: `<ng-content></ng-content>` }) export class ngbaccordion {   private onlyoneopen: boolean;   private groups: array<ngbaccordiongroup> = [];    addgroup(group: ngbaccordiongroup): void { this.groups.push(group); }    closeothers(opengroup): void {     if (!this.onlyoneopen) {       return;     }      this.groups.foreach((group: ngbaccordiongroup) => {       if (group !== opengroup) {         group.isopen = false;       }     });   }    removegroup(group: ngbaccordiongroup): void {     const index = this.groups.indexof(group);     if (index !== -1) {       this.groups.splice(index, 1);     }   } }  @component({   selector: 'ngb-accordion-group,[ngb-accordion-group]',    inputs: ['heading', 'isopen', 'isdisabled'],   template: `     <div class="card">       <div class="card-header">         <a href tabindex="0"><span [class.text-muted]="isdisabled" (click)="toggleopen($event)">{{heading}}</span></a>       </div>       <div class="card-block" [hidden]="!isopen">         <div class="card-text">             <ng-content></ng-content>         </div>       </div>     </div>   ` }) export class ngbaccordiongroup implements ondestroy {   private isdisabled: boolean;   private _isopen: boolean = false;    constructor(private accordion: ngbaccordion) { this.accordion.addgroup(this); }    toggleopen(event) {     event.preventdefault();     if (!this.isdisabled) {       this.isopen = !this.isopen;     }   }    ondestroy(): void { this.accordion.removegroup(this); }    public isopen(): boolean { return this._isopen; }    public set isopen(value: boolean) {     this._isopen = value;     if (value) {       this.accordion.closeothers(this);     }   } }  @component({   selector: 'my-app',   templateurl: './src/app.html'   directives: [ngbaccordion, ngbaccordiongroup] }) export class app {   firstdisabled:boolean = false;   isopen:boolean = false;  }  bootstrap(app, []).catch(err => console.error(err)); 

or take here http://plnkr.co/edit/we3esk?p=preview right working in rc1 have make angular 2.0.0-beta.15

any thoughts?

ondestroy(): void { this.accordion.removegroup(this); } 

should be

ngondestroy(): void { this.accordion.removegroup(this); } 

the error message comes

... implements ondestroy { 

without implementing members.