/**
 * Configuration for different grouping styles used in number formatting.
 *
 * - thousand: Groups by 3 digits (Western style) - 1,234,567
 * - lakh: First group of 3, then groups of 2 (Indian style) - 12,34,567
 * - wan: Groups by 4 digits (Chinese style) - 123,4567
 */
export declare const GROUPING_CONFIG: {
    readonly thousand: {
        readonly size: 3;
    };
    readonly lakh: {
        readonly firstGroup: 3;
        readonly restGroup: 2;
    };
    readonly wan: {
        readonly size: 4;
    };
};
/**
 * Interface representing a change range in the input value.
 * Used to distinguish between Delete and Backspace operations.
 */
export interface ChangeRange {
    start: number;
    end: number;
    deletedLength: number;
    isDelete?: boolean;
}