Cannot find name 'OnDestroy'

[LioLaza]

I am getting this error

import {Component, Input, OnDestroy} from 'angular2/core';

export class cardItem implements OnDestroy {
  ngOnDestroy() {
this.cardItem.removeGroup(this);
  }

}

how can i fix this?

[mirkonasato]

@LioLaza

‘angular2/core’

That should be '@angular/core'.