import React from 'react';
export declare function useTouch(): {
    startX: number;
    startY: number;
    diffX: number;
    diffY: number;
    start: (event: React.TouchEvent) => void;
    move: (event: React.TouchEvent) => void;
};
export declare const easeDistance: (distance: number, pullDistance: number) => number;
export declare const isReachTop: (e: React.TouchEvent) => boolean;