import { ComponentPublicInstance, Ref } from 'vue';
export type UseDropdownPopupOptions = {
    readonly anchorRef: Readonly<Ref<ComponentPublicInstance | null | undefined>>;
    readonly popupRef: Readonly<Ref<ComponentPublicInstance | null | undefined>>;
    readonly focusElement: Readonly<Ref<HTMLElement | null | undefined>>;
    readonly disabled?: Readonly<Ref<boolean>>;
    readonly readonly?: Readonly<Ref<boolean>>;
    readonly onOpen?: () => void;
    readonly onClose?: () => void;
};
export type UseDropdownPopupReturn = {
    readonly isOpen: Ref<boolean>;
    readonly open: () => void;
    readonly close: () => void;
    readonly toggle: () => void;
    readonly focusAnchor: () => void;
    readonly onKeyDownBase: (evt: KeyboardEvent) => boolean;
};
/**
 * Shared dropdown-popup infrastructure for select-like components. Manages:
 * - open/close state
 * - click-outside (close when clicking outside popup + anchor)
 * - focus-back-to-anchor on close
 * - focus-the-inner-focus-element on open
 * - Escape/Tab keyboard handling
 */
export default function useDropdownPopup(options: UseDropdownPopupOptions): UseDropdownPopupReturn;