import { ApplicationRef } from '@angular/core';
import { BehaviorSubject, Observable } from 'rxjs';
import * as i0 from "@angular/core";
export interface LifeCycleHook {
    promise: PromiseLike<any>;
}
export declare class LifeCycleService {
    readonly appRef: ApplicationRef;
    private static hooks;
    isReady$: BehaviorSubject<boolean>;
    constructor(appRef: ApplicationRef);
    static AddHook(name: string, promise: PromiseLike<any>): void;
    whenReady<T>(thenOrFunction: Observable<T> | PromiseLike<T> | (() => Observable<T>) | (() => PromiseLike<T>) | (() => T)): Observable<T>;
    static ɵfac: i0.ɵɵFactoryDeclaration<LifeCycleService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<LifeCycleService>;
}