export declare const ROVING_ATTR = "data-roving-key";
export declare const roving_key: (series_idx: number, mark_idx: number) => string;
export interface RovingFocus {
    tabindex: (key: string) => 0 | -1;
    focusin: (event: FocusEvent) => void;
    handle_keydown: (event: KeyboardEvent) => boolean;
}
export declare function create_roving_focus(opts: {
    container: () => Element | null | undefined;
    marks: () => unknown;
}): RovingFocus;