/**
 * Which labelling parts a popover currently renders. Zag checks for a title/description only
 * when its machine starts — before lazily mounted content exists — so it never sets
 * `aria-labelledby` / `aria-describedby` on the content. Title and Description register here
 * instead, and Content links them by the ids zag gives them.
 */
export declare class PopoverLabels {
    #private;
    get hasTitle(): boolean;
    get hasDescription(): boolean;
    /** Registers a rendered title; returns the unregister function. */
    registerTitle(): () => void;
    /** Registers a rendered description; returns the unregister function. */
    registerDescription(): () => void;
}
export declare function setPopoverLabels(): PopoverLabels;
/** Undefined when the part is rendered outside compote's `Popover.Root`. */
export declare function getPopoverLabels(): PopoverLabels | undefined;