import { Placement } from '@floating-ui/react';
import { CSSProperties, ReactNode } from 'react';
export interface PopperTransitionProps {
    in: boolean;
    onExited: () => void;
}
type PopperChildren = ReactNode | ((props: {
    TransitionProps: PopperTransitionProps;
    placement: Placement;
}) => ReactNode);
export interface PopperProps {
    open?: boolean;
    anchorEl?: Element | null;
    id?: string;
    placement?: Placement;
    transition?: boolean;
    disablePortal?: boolean;
    className?: string;
    style?: CSSProperties;
    children?: PopperChildren;
}
/**
 * Positioning primitive (replaces MUI `Popper`) built on `@floating-ui/react`. Positions its
 * content against `anchorEl`; with `transition`, renders children as a function receiving
 * `TransitionProps` (`in`/`onExited`) so a child `Fade` can animate and unmount. Public props
 * preserved (DEC-003). TASK-403.
 *
 * Body-portalled instances join the browser **top layer** (nested under a filter `StyledPopover`
 * otherwise paints under it). When `anchorEl` sits inside an open modal `<dialog>`, portal into
 * that dialog and skip the Popover API — see `shouldUsePopoverTopLayer`.
 */
export declare const Popper: ({ open, anchorEl, id, placement, transition, disablePortal, className, style, children, }: PopperProps) => JSX.Element | null;
export {};