export declare const SORTABLE_ATTR = "data-nabi-sortable";
export declare function hasMergedCells(table: Element): boolean;
export type SortDirection = 'descending' | 'ascending';
export interface SortState {
    readonly column: number;
    readonly direction: SortDirection;
}
export declare function nextSortState(active: SortState | null, column: number): SortState | null;
export declare function rankRows(values: readonly string[], direction: SortDirection, locale: string): number[];
export interface TableSortOptions {
    readonly locale?: string;
    readonly tables?: 'marked' | 'all';
}
export declare function attachTableSort(root: HTMLElement, options?: TableSortOptions): () => void;
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