export type NavAction = 'up' | 'down' | 'left' | 'right' | 'home' | 'end' | 'pageup' | 'pagedown';
/** Maps grid navigation and undo/redo keys and forwards them to the grid. */
export declare class KeyboardHandler {
    private host;
    private onNav;
    private onUndoRedo;
    private onActivate;
    private readonly onKeyDown;
    constructor(host: HTMLElement, onNav: (action: NavAction, extend: boolean) => void, onUndoRedo: (action: 'undo' | 'redo') => void, onActivate: () => void);
    dispose(): void;
}