import type { Observable } from 'rxjs';
import type { FormParent } from './form-parent';
import { FormComponentImpl } from './form-component-impl';
import { ComponentChangedEvent } from '../common/types';
/**
 * @internal
 */
export declare abstract class FormParentImpl<TValue> extends FormComponentImpl<TValue> implements FormParent<TValue> {
    private readonly _onComponentChange;
    get onComponentChange(): Observable<ComponentChangedEvent>;
    _notifyComponentsChanged(origin: FormParent<any>): void;
}