import { LayoutRectangle, NativeScrollEvent } from 'react-native';
export interface Root {
    /**
     * 대상 컴포넌트의 NodeHandle
     */
    node: any;
    /**
     * 가로 스크롤 활성화 여부
     */
    horizontal: boolean;
    /**
     * 대상 컴포넌트의 스크롤 이벤트
     */
    current: NativeScrollEvent;
    onLayout?: () => void;
    onScroll?: (event: NativeScrollEvent) => void;
}
export interface Element {
    inView: boolean;
    intersectionRatio: number;
    layout: LayoutRectangle;
    measureLayout: (node: any, callback: (x: number, y: number, width: number, height: number) => void) => void;
    onLayout?: () => void;
}
export interface IntersectionObserverEntry {
    target: Element;
    isIntersecting: boolean;
    intersectionRatio: number;
}
export interface RootMargin {
    left?: number;
    right?: number;
    top?: number;
    bottom?: number;
}
export interface IntersectionObserverOptions {
    /**
     * 요소를 감싸고 있는 컴포넌트 정보
     */
    root: Root;
    rootMargin?: RootMargin;
    threshold?: number | number[];
}
export type IntersectionObserverCallback = (entries: IntersectionObserverEntry[]) => void;
export declare const defaultRootMargin: RootMargin;
export declare const defaultThreshold = 0;
/**
 * @kind class
 * @name IntersectionObserver
 * @description
 * React Native 환경을 위해 구현된 IntersectionObserver 에요.
 *
 * @param {IntersectionObserverCallback} callback - 대상 요소의 노출 상태가 변경될 때 호출되는 콜백이에요.
 * @param {IntersectionObserverOptions} options - IntersectionObserver 동작을 제어하는 옵션 객체에요.
 */
declare class IntersectionObserver {
    protected callback: IntersectionObserverCallback;
    protected options: IntersectionObserverOptions;
    protected targets: Element[];
    constructor(callback: IntersectionObserverCallback, options: IntersectionObserverOptions);
    protected measureTarget: (target: Element) => void;
    protected handleLayout: () => void;
    protected handleScroll: () => void;
    observe(target: Element): void;
    unobserve(target: Element): void;
}
export default IntersectionObserver;