/**
 * emulate tab keyboard events and default action (switch to next element)
 *
 * fist:
 * - dispatch tab keydown event at active element
 *
 * then emulate default action (if not prevented):
 * - blur on active element
 * - skip keypress action (it's between element switch so there is no target)
 * - find next element in selectable elemetns
 * - focus on next element
 * - tab keyup on next element
 *
 * or (if default action is prevented):
 * - tab keypress on active element
 * - tab keyup on active elment
 *
 * @returns true if switched elemenet and false if default action had been prevented
 */
export declare function emulateTab(): boolean;
export declare namespace emulateTab {
    /**
     * emulate tab from a given element (default is active element)
     *
     * @returns methods to select tab target
     */
    const from: typeof emulateTabFrom;
    /**
     * emulate tab from active element to a given target
     *
     * @param target element to switch to
     * @param sendKeyEventsWithShiftModifier like shift tab would do
     * @returns true if switched elemenet and false if default action had been prevented
     */
    const to: (target: HTMLElement, sendKeyEventsWithShiftModifier?: boolean) => boolean;
    /**
     * emulate tab to previous element
     *
     * @returns true if switched elemenet and false if default action had been prevented
     */
    const backwards: () => boolean;
    /**
     * alias for emulateTab() that is more precise about it's direction
     *
     * @returns true if switched elemenet and false if default action had been prevented
     */
    const forwards: () => boolean;
    /**
     * find all elements that are selectable by tab
     */
    const findSelectableElements: () => HTMLElement[];
}
declare function emulateTabFrom(source?: HTMLElement): {
    /**
     * emulate tab to the element before the starting element (which is the active element by default)
     *
     * @returns true if switched elemenet and false if default action had been prevented
     */
    toPreviousElement: () => boolean;
    /**
     * emulate tab to the element after the starting element (which is the active element by default)
     *
     * @returns true if switched elemenet and false if default action had been prevented
     */
    toNextElement: () => boolean;
    /**
     * emulate tab to a custom given element
     *
     * @param target element after tab
     * @param sendKeyEventsWithShiftModifier like shift tab would do
     * @returns true if switched elemenet and false if default action had been prevented
     */
    to: (target: HTMLElement, sendKeyEventsWithShiftModifier?: boolean) => boolean;
};
export {};