export declare enum MenuPopupDataAttributes {
    /**
     * Present when the menu is open.
     */
    open = "data-open",
    /**
     * Present when the menu is closed.
     */
    closed = "data-closed",
    /**
     * Present when the menu is animating in.
     */
    startingStyle = "data-starting-style",
    /**
     * Present when the menu is animating out.
     */
    endingStyle = "data-ending-style",
    /**
     * Indicates which side the menu is positioned relative to the trigger.
     * @type {'none' | 'top' | 'right' | 'bottom' | 'left'}
     */
    side = "data-side"
}