/// <reference types="@yandex-int/messenger.utils/@types" />
import type { TargetPosition } from '../../types';
export interface Place {
    left?: number;
    top?: number;
    height?: number;
    naturalHeight?: number;
}
interface Bounds {
    left: number;
    top: number;
    right: number;
    bottom: number;
    height: number;
    width: number;
}
export declare function getViewportBounds(): Bounds;
export declare function getPopupHeight(viewportHeight: number, popupHeight: number, anchorBounds: Bounds, anchor: HTMLElement, position: 'top' | 'bottom'): number;
export declare function calculatePosition(el: HTMLElement, anchor: HTMLElement, targetPosition: Maybe<TargetPosition>, prevPosition: Maybe<Place>): Place;
export {};