declare class DropdownHelper {
    private container;
    private toggleEl;
    private dropdown;
    private alignment;
    private triggerOn;
    private fullWidth;
    private focusIndex;
    active: boolean;
    /**
     * A helper function to interact with dropdowns.
     * @param id The ID of the dropdown.
     * @param fullWidth Whether the dropdown should be full width. Not needed normally.
     */
    constructor(id: string, fullWidth?: boolean);
    /**
     * Registers a click callback for the dropdown options. Whenever one of the options
     * is clicked, the callback will be called with the value of the option.
     * @param func The callback function.
     */
    registerClickCallback: (func: (value: string) => void) => void;
    /**
     * Sets up all listeners for the dropdown.
     */
    private initialBehaviorRegistration;
    /**
     * Registers callbacks to hide the dropdown when an option is clicked.
     */
    private initialOptClickRegistration;
    /**
     * A function to toggle the dropdown.
     */
    toggle: () => void;
    /**
     * A function to hide the dropdown.
     */
    hide: () => void;
    /**
     * A function to show the dropdown.
     */
    show: () => void;
    /**
     * A jQuery-like function to hide the dropdown when clicking outside of it.
     * @param element The element to hide when clicking outside of it.
     */
    private hideOnClickOutside;
}
export { DropdownHelper };