import type { Provider } from '@angular/core';
import { InjectionToken } from '@angular/core';
export declare const WA_MUTATION_OBSERVER_INIT: InjectionToken<MutationObserverInit>;
/**
 * @deprecated: drop in v5.0, use {@link WA_MUTATION_OBSERVER_INIT}
 */
export declare const MUTATION_OBSERVER_INIT: InjectionToken<MutationObserverInit>;
export declare function provideMutationObserverInit(useValue: MutationObserverInit): Provider;