import { IOffset, IPopupPositionProps, IStackPositionProps } from './types';
/** By default, stack modal will be centered in horizontally and vertically
 *  @param position the `top` `left` `right` `bottom` style of a element.
 */
export declare const getPositionInStackMode: ({ position, }: {
    position: IStackPositionProps['position'];
}) => {
    top?: string | number | undefined;
    left?: string | number | undefined;
    right?: number | undefined;
    bottom?: number | undefined;
    transform: string;
};
export declare const getPositionInPopupMode: (params: {
    parentSize?: ClientRect | null;
    childSize?: ClientRect;
    avoidCollision: boolean;
    avoidElementVert: boolean;
    forceTop?: boolean;
    containRight?: boolean;
    referenceSize?: ClientRect;
    offset?: IOffset;
    position?: IPopupPositionProps['position'];
}) => {
    left: number;
    vertical: {
        position: string;
        value: number;
    };
};
export declare function offset(el: Element): {
    left: number;
    top: number;
};