export declare const handleFixedDropdown: (element: HTMLElement, parent: HTMLElement, placement: string) => void;
export declare const getFloatingProps: (element: HTMLElement, parent: HTMLElement, placement: string) => {
    top: number;
    bottom: number;
    right: number;
    height: number;
    width: number;
    left: number;
    childHeight: number;
    childWidth: number;
    correctedPlacement: string;
    innerWidth: number;
    innerHeight: number;
    outsideYBoth?: undefined;
} | {
    top: number;
    bottom: number;
    right: number;
    height: number;
    width: number;
    left: number;
    childHeight: number;
    childWidth: number;
    correctedPlacement: string;
    innerWidth: number;
    innerHeight: number;
    outsideYBoth: boolean;
};
export declare const handleFixedPopover: (element: HTMLElement, parent: HTMLElement, placement?: string) => void;
/**
 * Detects whether a floating element overflows the viewport edges
 * and sets `data-outside-vy` / `data-outside-vx` attributes accordingly.
 * CSS rules can use these attributes to flip/reposition the element.
 *
 * If the element was already flipped (has existing data-outside-* attributes),
 * it checks whether the flipped position would overflow on the opposite side
 * using the parent's rect as reference, preventing infinite flip-flop.
 */
export interface DBDataOutsidePair {
    vx?: 'left' | 'right';
    vy?: 'top' | 'bottom';
}
export declare const handleDataOutside: (el: HTMLElement) => DBDataOutsidePair;