/**
 * Check if the key pressed is among those allowed for navigation.
 * @param event The keyboard event to check.
 */
export declare function isArrowKeyPressed(event: KeyboardEvent): boolean;
/**
 * Check if the key pressed should move the navigation to the next element.
 * @param event The keyboard event to check.
 */
export declare function isPreviousArrowKeyPressed(event: KeyboardEvent): boolean;
/**
 * Check if the key pressed should move the navigation to the next element.
 * @param event The keyboard event to check.
 */
export declare function isNextArrowKeyPressed(event: KeyboardEvent): boolean;
/**
 * Check if the key pressed is among those allowed for navigation.
 * @param event The keyboard event to check.
 */
export declare function isArrowKeyOrPageKeysPressed(event: KeyboardEvent): boolean;
/**
 * Gets the index of the element to move to, based on the keyboard input, the current element in the list and the list size.
 * @param event The keyboard event to check.
 * @param current The index of the current element in the list.
 * @param size The size of the list.
 * @returns if it is a 'previous' event, returns the index of the previous element,
 * or the index of the last one if the current element is the first in the list;
 * if it is a 'next' event, returns the index of the next element,
 * or the index of the first one, if the current is the last in the list.
 */
export declare function getNextElementIndex(event: KeyboardEvent, current: number, size: number): number;
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