import { OnDestroy } from '@angular/core';
import { Subject } from 'rxjs';
import * as i0 from "@angular/core";
export declare abstract class AbstractComponent implements OnDestroy {
    protected componentDestroyed: Subject<void>;
    abstract afterOnDestroy(): void;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<AbstractComponent, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<AbstractComponent, never, never, {}, {}, never>;
}