/**
 * Pure sort comparator functions for the enterprise data grid.
 * Supports multi-column sorting, natural sort, and type-aware comparison.
 */
export type SortDirection = 'asc' | 'desc';
export interface SortDescriptor {
    field: string;
    dir: SortDirection;
}
/** Natural sort comparator — handles mixed alpha-numeric strings (e.g. 'item2' before 'item10') */
export declare function naturalCompare(a: string, b: string): number;
/** Type-aware value comparison: handles string, number, Date, boolean, null/undefined */
export declare function compareValues(a: unknown, b: unknown): number;
/** Single-field sort */
export declare function sortByField<T extends Record<string, unknown>>(data: T[], field: string, dir: SortDirection): T[];
/** Multi-field sort (ordered priority) */
export declare function sortByMultipleFields<T extends Record<string, unknown>>(data: T[], descriptors: SortDescriptor[]): T[];