import type { Middleware, Placement } from '@floating-ui/vue';
export declare const SIDE_OPTIONS: readonly ["top", "right", "bottom", "left"];
export declare const ALIGN_OPTIONS: readonly ["start", "center", "end"];
export type Side = typeof SIDE_OPTIONS[number];
export type Align = typeof ALIGN_OPTIONS[number];
export declare function isDefined<T>(value: T | undefined): value is T;
export declare function isNotNull<T>(value: T | null): value is T;
export declare function transformOrigin(options: {
    arrowWidth: number;
    arrowHeight: number;
}): Middleware;
export declare function getSideAndAlignFromPlacement(placement: Placement): readonly ["top" | "right" | "bottom" | "left", "start" | "center" | "end"];