/**
 * Vendored React 19-compatible replacement for the `usePopper` hook from
 * the unmaintained `react-popper` package.
 *
 * Changes from the original:
 * - Ported to TypeScript (the original was Flow-typed)
 * - Replaced `ReactDOM.flushSync` with a plain `setState` call. In React 18+
 *   `flushSync` inside a `useLayoutEffect` callback causes a warning; in
 *   React 19 it throws. The first position is instead computed synchronously
 *   via `forceUpdate()` while still inside the layout effect, which React
 *   commits before the browser paints (see the effect below).
 * - Inlined `fromEntries` and `isEqual` helpers to remove the
 *   `react-fast-compare` dependency.
 * - `useIsomorphicLayoutEffect` inlined: uses `useLayoutEffect` in browsers
 *   and `useEffect` as an SSR fallback to suppress the React warning.
 *
 * Source: https://github.com/floating-ui/react-popper/blob/master/src/usePopper.js
 */
import { createPopper as defaultCreatePopper, type Instance as PopperInstance, type Options as PopperOptions, type State as PopperState, type VirtualElement } from '@popperjs/core';
import { type CSSProperties } from 'react';
type Styles = Record<string, CSSProperties>;
type Attributes = Record<string, Record<string, string | boolean>>;
type UsePopperOptions = Partial<PopperOptions & {
    createPopper: typeof defaultCreatePopper;
}>;
export type UsePopperResult = Readonly<{
    state: PopperState | null;
    styles: Styles;
    attributes: Attributes;
    update: PopperInstance['update'] | null;
    forceUpdate: PopperInstance['forceUpdate'] | null;
}>;
export declare function usePopper(referenceElement: Element | VirtualElement | null | undefined, popperElement: HTMLElement | null | undefined, options?: UsePopperOptions): UsePopperResult;
export {};
//# sourceMappingURL=use-popper-compat.d.ts.map