/**
 * module to inspect which key was press on keyboard event.
 * compatibility with chrome 44.
 * @param event keyboard event
 */
export declare function isArrowRightKey(event: KeyboardEvent): boolean;
export declare function isArrowLeftKey(event: KeyboardEvent): boolean;
export declare function isBackspaceKey(event: KeyboardEvent): boolean;
export declare function isEnterKey(event: KeyboardEvent): boolean;
export declare function isDigitKey(event: KeyboardEvent): boolean;
export declare function isEscapeKey(event: KeyboardEvent): boolean;
export declare function isDeleteKey(event: KeyboardEvent): boolean;