import { ESLMixinElement } from '../../esl-mixin-element/core';
import { ESLIntersectionEvent } from '../../esl-event-listener/core/targets/intersection.target';
export declare class ESLLazyTemplate extends ESLMixinElement {
    static is: string;
    protected baseMargin: number;
    protected INTERSECTION_THRESHOLD: number[];
    /** URL to load content from */
    url?: string;
    /** IntersectionObserver rootMargin value */
    protected get rootMargin(): string;
    /** Connection speed ratio */
    protected get connectionRatio(): number;
    /** Host element is a template */
    protected get isHostTemplate(): boolean;
    /** LazyTemplate placeholder */
    get $placeholder(): HTMLElement;
    /** LazyTemplate viewport (root element for IntersectionObservers checking visibility) */
    protected get $viewport(): Element | undefined;
    protected disconnectedCallback(): void;
    /** Loads content from the URL */
    protected loadContent(url: string): Promise<Node | string>;
    /** Gets content from the URL or host template element */
    protected getContent(): Promise<string | Node>;
    /** Replaces host element with content */
    protected replaceWithContent(): Promise<void>;
    protected _onIntersect(e: ESLIntersectionEvent): void;
}
declare global {
    export interface ESLLibrary {
        LazyTemplate: typeof ESLLazyTemplate;
    }
    interface Navigator extends NavigatorNetworkInformation {
    }
    interface NavigatorNetworkInformation {
        readonly connection?: {
            readonly effectiveType: 'slow-2g' | '2g' | '3g' | '4g';
        };
    }
}