import { AfterViewInit, EmbeddedViewRef, EventEmitter, OnDestroy, TemplateRef, ViewContainerRef } from '@angular/core';
import { BaseComponent } from 'primeng/basecomponent';
import { Nullable } from 'primeng/ts-helpers';
import * as i0 from "@angular/core";
/**
 * Defer postpones the loading the content that is initially not in the viewport until it becomes visible on scroll.
 * @deprecated use Angular defer block instead.
 * @group Components
 */
export declare class Defer extends BaseComponent implements AfterViewInit, OnDestroy {
    /**
     * Callback to invoke when deferred content is loaded.
     * @param {Event} event - Browser event.
     * @group Emits
     */
    onLoad: EventEmitter<Event>;
    template: TemplateRef<any> | undefined;
    documentScrollListener: Nullable<Function>;
    view: Nullable<EmbeddedViewRef<any>>;
    viewContainer: ViewContainerRef;
    ngOnInit(): void;
    ngAfterViewInit(): void;
    shouldLoad(): boolean;
    load(): void;
    isLoaded(): boolean;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<Defer, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<Defer, "[pDefer]", never, {}, { "onLoad": "onLoad"; }, ["template"], never, true, never>;
}
export declare class DeferModule {
    static ɵfac: i0.ɵɵFactoryDeclaration<DeferModule, never>;
    static ɵmod: i0.ɵɵNgModuleDeclaration<DeferModule, never, [typeof Defer], [typeof Defer]>;
    static ɵinj: i0.ɵɵInjectorDeclaration<DeferModule>;
}