type KeyboardEventHandler<T extends KeyboardEvent = KeyboardEvent> = (event: T) => void;
/**
 * Creates a modifier that only triggers the handler if a specific key is pressed.
 */
export declare function key<T extends KeyboardEvent, U extends HTMLElement>(
/** The original event handler. */
handler: KeyboardEventHandler<T>, 
/** The key to check for (e.g., 'Enter', 'Shift', 'a'). Must be a valid KeyboardEvent.key value.
 * @see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values
 */
key: string, options?: {
    /** The modifiers that need to be pressed for the handler to be triggered. */
    /** Whether the Alt key needs to be pressed. */
    altKey?: boolean;
    /** Whether the Ctrl key needs to be pressed. */
    ctrlKey?: boolean;
    /** Whether the Meta key (Command key on Mac, Windows key on Windows) needs to be pressed. */
    metaKey?: boolean;
    /** Whether the Shift key needs to be pressed. */
    shiftKey?: boolean;
    /** Whether the exact modifiers need to be pressed (i.e. no other modifiers can be pressed). */
    exact?: boolean;
}): KeyboardEventHandler<T>;
export {};