/**
 *
 * This file may have been modified by Bytedance Inc. (“Bytedance Inc.'s Modifications”). 
 * All Bytedance Inc.'s Modifications are Copyright (year) Bytedance Inc..  
 * 
 * This source code is licensed under the Apache license.
 * See LICENSE file in the project root for license information.
 *
 */
import React, { Component } from 'react';
declare type InfiniteScrollProps = {
    children?: React.ReactNode;
    element?: 'string';
    hasMore?: boolean;
    initialLoad?: boolean;
    isReverse?: boolean;
    loader?: React.ReactNode;
    loadMore?: (page: number) => void;
    pageStart?: number;
    getScrollParent?: () => Element | null;
    getScrollElement?: () => Element | null;
    threshold?: number;
    useCapture?: boolean;
    useWindow?: boolean;
    ref?: any;
};
declare type InfiniteScrollInnerOptionType = {
    useCapture?: boolean;
    passive?: boolean;
};
export default class InfiniteScroll extends Component<InfiniteScrollProps, {}> {
    static defaultProps: {
        element: string;
        hasMore: boolean;
        initialLoad: boolean;
        pageStart: number;
        ref: null;
        threshold: number;
        useWindow: boolean;
        isReverse: boolean;
        useCapture: boolean;
        loader: null;
        getScrollParent: null;
    };
    pageLoaded: number;
    options: InfiniteScrollInnerOptionType;
    loadMore: boolean;
    scrollComponent: Element;
    beforeScrollHeight: number;
    beforeScrollTop: number;
    defaultLoader: React.ReactNode;
    constructor(props: InfiniteScrollProps);
    componentDidMount(): void;
    componentDidUpdate(): void;
    componentWillUnmount(): void;
    isPassiveSupported(): boolean;
    eventListenerOptions(): InfiniteScrollInnerOptionType;
    setDefaultLoader(loader: React.ReactNode): void;
    detachMousewheelListener(): void;
    detachScrollListener(): void;
    getParentElement(el: Element): Element;
    filterProps(props: InfiniteScrollProps): InfiniteScrollProps;
    attachScrollListener(): void;
    mousewheelListener(e: any): void;
    scrollListener(): void;
    calculateOffset(el: Element, scrollTop: number): number;
    calculateTopPosition(el: Element): number;
    render(): React.DOMElement<{}, Element>;
}
export {};