import { ResultConfig, Point } from '../../types';
export declare const isElement: (el: any) => boolean;
export declare const matchesDragger: (el: any, configs: ResultConfig[]) => ResultConfig | -1;
export declare const matchesContainer: (el: any, configs: ResultConfig[]) => ResultConfig | -1;
export declare const getViewport: () => {
    top: number;
    right: number;
    bottom: number;
    left: number;
};
export declare const isElementInViewport: (el: HTMLElement) => boolean;
export declare const isElementVisibleInViewport: (el: HTMLElement) => boolean;
export declare const withinElement: (el: HTMLElement) => (point: Point) => boolean;