import type { TooltipPlacement, TooltipProps } from '../../core/types';
export declare function getDefaultFallbackPlacements(placement: TooltipPlacement): TooltipPlacement[];
export declare function calcAnchorPoint(triggerRect: DOMRect, placement: TooltipPlacement, arrowPosition: TooltipProps['arrowPosition']): {
    top: number;
    left: number;
};
type FitsInViewportParams = {
    anchor: {
        top: number;
        left: number;
    };
    tooltipWidth: number;
    tooltipHeight: number;
    placement: TooltipPlacement;
    arrowPosition: TooltipProps['arrowPosition'];
};
export declare function fitsInViewport({ anchor, tooltipWidth, tooltipHeight, placement, arrowPosition, }: FitsInViewportParams): boolean;
type ResolvePlacementParams = {
    triggerRect: DOMRect;
    tooltipWidth: number;
    tooltipHeight: number;
    placement: TooltipPlacement;
    arrowPosition: TooltipProps['arrowPosition'];
    fallbackPlacements: TooltipPlacement[] | undefined;
};
/**
 * Given the trigger rect, tooltip dimensions, primary placement/arrow, and
 * fallback list, returns the first placement that keeps the tooltip fully
 * inside the viewport. Falls back to the primary when nothing fits.
 */
export declare function resolvePlacement({ triggerRect, tooltipWidth, tooltipHeight, placement, arrowPosition, fallbackPlacements, }: ResolvePlacementParams): TooltipPlacement;
export {};