export declare class Positioning { private getAllStyles; private getStyle; private isStaticPositioned; private offsetParent; private position; private offset; positionElements(hostElement: HTMLElement, targetElement: HTMLElement, placement: string, appendToBody?: boolean): boolean; } export declare const positionService: Positioning; export declare function positionElements(hostElement: HTMLElement, targetElement: HTMLElement, placement: string | Placement | PlacementArray, appendToBody?: boolean, baseClass?: string): Placement | null; export declare type Placement = 'auto' | 'top' | 'bottom' | 'left' | 'right' | 'top-left' | 'top-right' | 'bottom-left' | 'bottom-right' | 'left-top' | 'left-bottom' | 'right-top' | 'right-bottom'; export declare type PlacementArray = Placement | Array | string;