import { ElementRef, OnChanges, SimpleChanges } from '@angular/core';
export interface PositionStyles {
    top: string;
    left: string;
    right: string;
    bottom: string;
}
export declare type PopupPlacement = 'bottomLeft' | 'topRight' | 'bottomRight';
export declare class PopupComponent implements OnChanges {
    private el;
    hidden: boolean;
    placement?: PopupPlacement;
    positions: PositionStyles;
    constructor(el: ElementRef);
    ngOnChanges(changes: SimpleChanges): void;
    open(): void;
    close(): void;
}